Sygen

White

#F0F9FF

#F0F9FF is a white with almost no color, at step 50 of its 50–950 scale. Dark text on it has a contrast of 17.7:1. On white it reaches only 1.1:1, so use a darker shade for text.

Build a color system Shades Contrast
White#F0F9FF
HWB, OKLab, LCH, Lab and Display P3

#F0F9FF shades and tints

Eleven steps from 50 to 950 with #F0F9FF kept exactly at step 50. Lightness steps are even to the eye, and intensity tapers toward the lightest and darkest steps.

Open in shade generator
  1. 50 F0F9FF
  2. 100 E6ECF1
  3. 200 D3DADF
  4. 300 B9C1C6
  5. 400 9CA4AA
  6. 500 81898E
  7. 600 676E74
  8. 700 4F565B
  9. 800 3A4145
  10. 900 272C30
  11. 950 15191C

Tailwind CSS v4 theme

@theme {  --color-gray-50: #f0f9ff;  --color-gray-100: #e6ecf1;  --color-gray-200: #d3dadf;  --color-gray-300: #b9c1c6;  --color-gray-400: #9ca4aa;  --color-gray-500: #81898e;  --color-gray-600: #676e74;  --color-gray-700: #4f565b;  --color-gray-800: #3a4145;  --color-gray-900: #272c30;  --color-gray-950: #15191c;}

Is #F0F9FF readable?

Contrast for text on #F0F9FF and for #F0F9FF used as text. WCAG 2.2 asks for 4.5:1 for body text and 3:1 for large text; APCA Lc rates how comfortable the text is to read.

Color palettes with #F0F9FF

Six palettes built around #F0F9FF, each starting from the exact color. Open one in the palette tool to adjust it or get more options.

#F0F9FF as a brand color

What a UI color system built from #F0F9FF looks like: brand, neutral and status scales, with light and dark tokens that pass WCAG.

Open in builder

Brand

  1. Brand 50, #F0F9FF
  2. Brand 100, #E6ECF1
  3. Brand 200, #D3DADF
  4. Brand 300, #B9C1C6
  5. Brand 400, #9CA4AA
  6. Brand 500, #81898E
  7. Brand 600, #676E74
  8. Brand 700, #4F565B
  9. Brand 800, #3A4145
  10. Brand 900, #272C30
  11. Brand 950, #15191C

Neutral

  1. Neutral 50, #F9FAFB
  2. Neutral 100, #F3F4F5
  3. Neutral 200, #E4E5E7
  4. Neutral 300, #D2D5D6
  5. Neutral 400, #9DA1A4
  6. Neutral 500, #6F7477
  7. Neutral 600, #505558
  8. Neutral 700, #3D4144
  9. Neutral 800, #25282B
  10. Neutral 900, #15181B
  11. Neutral 950, #080B0D

Success

  1. Success 50, #E5FFE9
  2. Success 100, #BEFECA
  3. Success 200, #A7EDB5
  4. Success 300, #87D597
  5. Success 400, #65B979
  6. Success 500, #51A867
  7. Success 600, #278143
  8. Success 700, #06672E
  9. Success 800, #004E20
  10. Success 900, #003614
  11. Success 950, #001F09

Warning

  1. Warning 50, #FFF5E9
  2. Warning 100, #FFE7CA
  3. Warning 200, #FFD096
  4. Warning 300, #F0AF59
  5. Warning 400, #D29541
  6. Warning 500, #B67917
  7. Warning 600, #956000
  8. Warning 700, #764B00
  9. Warning 800, #593800
  10. Warning 900, #3E2500
  11. Warning 950, #251400

Danger

  1. Danger 50, #FFF4F2
  2. Danger 100, #FFE4E0
  3. Danger 200, #FFCBC4
  4. Danger 300, #FFA398
  5. Danger 400, #F7766B
  6. Danger 500, #D4534A
  7. Danger 600, #B93B35
  8. Danger 700, #9A211F
  9. Danger 800, #7B070C
  10. Danger 900, #580004
  11. Danger 950, #360002

Info

  1. Info 50, #F0F8FF
  2. Info 100, #DBEEFF
  3. Info 200, #B9DEFF
  4. Info 300, #84C7FF
  5. Info 400, #5FAAE7
  6. Info 500, #3E8CC9
  7. Info 600, #2173AD
  8. Info 700, #00598F
  9. Info 800, #00436D
  10. Info 900, #002E4D
  11. Info 950, #001A2F
  • Primary buttons use Brand 50 with neutral 950 text, at 18.5:1.
  • In dark mode primary stays Brand 50: it already reads on the dark background at 18.5:1.
  • Neutrals carry a hint of its hue, so grays, borders and surfaces feel related to the brand.
  • Success, warning, danger and info lean toward its hue and stay easy to tell apart.

Colors related to #F0F9FF

Lighter and darker versions of #F0F9FF.