#F4F9FF
Closest named color: Ghost White (#F8F8FF). oklch(98% 0.01 252.8), rgb(244, 249, 255).
Aa
Black text reads best on this color (19.84:1).
About this color
#F4F9FF is a very light close to neutral grey. In OKLCH its lightness is 98%, its chroma 0.010. It has too little chroma to lean warm or cool. The nearest named color is Ghost White (#F8F8FF), ΔE 0.006 away. Black text reads best on it, at 19.84:1.
| Hue family | Neutrals |
| Lightness | very light (98%) |
| Chroma | close to neutral grey (0.010) |
| Temperature | neutral |
| Nearest name | Ghost White (#F8F8FF) |
| Black text | 19.84:1 |
| White text | 1.05:1 |
Values
| HEX | #F4F9FF |
| RGB | rgb(244, 249, 255) |
| HSL | hsl(213, 100%, 98%) |
| OKLCH | oklch(98% 0.01 252.8) |
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 #F4F9FF | 1.05:1 | Fails | Lc 0.0 | Not readable |
| Black text on #F4F9FF | 19.84:1 | AAA | Lc 102.1 | Preferred for body text |
| #F4F9FF text on white | 1.05:1 | Fails | Lc 0.0 | Not readable |
| #F4F9FF text on black | 19.84:1 | AAA | Lc -103.5 | 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)
#F4F9FF
oklch(98% 0.01 252.8)
-
Step 100
100
#E8EAEC
oklch(93.6% 0.003 247.9)
-
Step 200
200
#D6D9DE
oklch(88.4% 0.008 260.7)
-
Step 300
300
#BBC1C9
oklch(80.9% 0.013 255.5)
-
Step 400
400
#98A2AD
oklch(70.8% 0.02 250.7)
-
Step 500
500
#7F8B99
oklch(63.2% 0.025 252.3)
-
Step 600
600
#687583
oklch(55.7% 0.027 250.3)
-
Step 700
700
#57626F
oklch(49.1% 0.025 252.7)
-
Step 800
800
#47505B
oklch(42.7% 0.022 253.5)
-
Step 900
900
#3B424A
oklch(37.6% 0.017 251.8)
-
Step 950
950
#23272C
oklch(27.1% 0.011 254)
#F4F9FF 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) | #F7F9FF | 0.004 |
| Deuteranopia (no green cones) | #F6F8FF | 0.003 |
| Tritanopia (no blue cones) | #F2FAFB | 0.007 |
| Achromatopsia (no color) | #F8F8F8 | 0.010 |
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 #F4F9FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ghost White #F8F8FF ΔE 0.006
- Alice Blue #F0F8FF ΔE 0.006
- Cultured #F8F9FA ΔE 0.008
- White Smoke #F5F5F5 ΔE 0.014
- Azure #F0FFFF ΔE 0.016
- Snow #FFFAFA ΔE 0.016
- Pale Grey #FDFDFE ΔE 0.017
- Mint Cream #F5FFFA ΔE 0.019
Use #F4F9FF 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.