#F0F9FF
Closest named color: Alice Blue (#F0F8FF). oklch(97.7% 0.012 236.6), rgb(240, 249, 255).
Aa
Black text reads best on this color (19.69:1).
About this color
#F0F9FF is a very light close to neutral grey. In OKLCH its lightness is 98%, its chroma 0.012. It has too little chroma to lean warm or cool. The nearest named color is Alice Blue (#F0F8FF), ΔE 0.003 away. Black text reads best on it, at 19.69:1.
| Hue family | Neutrals |
| Lightness | very light (98%) |
| Chroma | close to neutral grey (0.012) |
| Temperature | neutral |
| Nearest name | Alice Blue (#F0F8FF) |
| Black text | 19.69:1 |
| White text | 1.06:1 |
Values
| HEX | #F0F9FF |
| RGB | rgb(240, 249, 255) |
| HSL | hsl(204, 100%, 97%) |
| OKLCH | oklch(97.7% 0.012 236.6) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #F0F9FF | 1.06:1 | Fails | Lc 0.0 | Not readable |
| Black text on #F0F9FF | 19.69:1 | AAA | Lc 101.6 | Preferred for body text |
| #F0F9FF text on white | 1.06:1 | Fails | Lc 0.0 | Not readable |
| #F0F9FF text on black | 19.69:1 | AAA | Lc -103.0 | Preferred for body text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 50.
-
Step 50
50 (this color)
#F0F9FF
oklch(97.7% 0.012 236.6)
-
Step 100
100
#E7EAEC
oklch(93.5% 0.004 236.5)
-
Step 200
200
#D4DADE
oklch(88.5% 0.009 236.6)
-
Step 300
300
#B7C2CA
oklch(80.8% 0.017 239.2)
-
Step 400
400
#92A3AF
oklch(70.6% 0.026 238.6)
-
Step 500
500
#778D9B
oklch(63.1% 0.033 236)
-
Step 600
600
#607786
oklch(55.6% 0.036 236.9)
-
Step 700
700
#4F6471
oklch(49.1% 0.033 235.5)
-
Step 800
800
#41525C
oklch(42.8% 0.027 234.1)
-
Step 900
900
#37444C
oklch(37.8% 0.022 235.2)
-
Step 950
950
#20282C
oklch(27.1% 0.014 229.5)
#F0F9FF with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #F6F9FF | 0.008 |
| Deuteranopia (no green cones) | #F4F7FF | 0.007 |
| Tritanopia (no blue cones) | #ECFBFB | 0.010 |
| Achromatopsia (no color) | #F8F8F8 | 0.013 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
This color is close to neutral, so it has no meaningful hue to rotate. Hue harmonies are omitted.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #F0F9FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Alice Blue #F0F8FF ΔE 0.003
- Ghost White #F8F8FF ΔE 0.010
- Cultured #F8F9FA ΔE 0.012
- White Smoke #F5F5F5 ΔE 0.014
- Azure #F0FFFF ΔE 0.016
- Mint Cream #F5FFFA ΔE 0.020
- Anti-Flash White #EDF2F4 ΔE 0.020
- Snow #FFFAFA ΔE 0.021
Use #F0F9FF in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.