#F4F5FB
Closest named color: White Smoke (#F5F5F5). oklch(97.1% 0.008 278.6), rgb(244, 245, 251).
Aa
Black text reads best on this color (19.30:1).
About this color
#F4F5FB is a very light close to neutral grey. In OKLCH its lightness is 97%, its chroma 0.008. It has too little chroma to lean warm or cool. The nearest named color is White Smoke (#F5F5F5), ΔE 0.008 away. Black text reads best on it, at 19.30:1.
| Hue family | Neutrals |
| Lightness | very light (97%) |
| Chroma | close to neutral grey (0.008) |
| Temperature | neutral |
| Nearest name | White Smoke (#F5F5F5) |
| Black text | 19.30:1 |
| White text | 1.08:1 |
Values
| HEX | #F4F5FB |
| RGB | rgb(244, 245, 251) |
| HSL | hsl(231, 47%, 97%) |
| OKLCH | oklch(97.1% 0.008 278.6) |
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 #F4F5FB | 1.08:1 | Fails | Lc 0.0 | Not readable |
| Black text on #F4F5FB | 19.30:1 | AAA | Lc 100.2 | Preferred for body text |
| #F4F5FB text on white | 1.08:1 | Fails | Lc 0.0 | Not readable |
| #F4F5FB text on black | 19.30:1 | AAA | Lc -101.4 | 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)
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E9EAEC
oklch(93.7% 0.003 264.5)
-
Step 200
200
#D8D9DD
oklch(88.6% 0.006 275)
-
Step 300
300
#BFC0C7
oklch(80.9% 0.01 279.7)
-
Step 400
400
#9EA0AB
oklch(70.8% 0.016 277.7)
-
Step 500
500
#868897
oklch(63% 0.022 279.7)
-
Step 600
600
#707281
oklch(55.6% 0.023 279.6)
-
Step 700
700
#5E606D
oklch(49.2% 0.021 278.7)
-
Step 800
800
#4D4E59
oklch(42.7% 0.018 281.5)
-
Step 900
900
#404149
oklch(37.7% 0.014 280.1)
-
Step 950
950
#25262B
oklch(27% 0.009 276.8)
#F4F5FB 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) | #F4F5FB | 0.000 |
| Deuteranopia (no green cones) | #F3F5FB | 0.001 |
| Tritanopia (no blue cones) | #F3F6F7 | 0.007 |
| Achromatopsia (no color) | #F5F5F5 | 0.008 |
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 #F4F5FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- White Smoke #F5F5F5 ΔE 0.008
- Alice Blue #F0F8FF ΔE 0.009
- Ghost White #F8F8FF ΔE 0.010
- Cultured #F8F9FA ΔE 0.012
- Anti-Flash White #EDF2F4 ΔE 0.015
- Very Light Pink #FFF4F2 ΔE 0.017
- Lavender Blush #FFF0F5 ΔE 0.018
- Snow #FFFAFA ΔE 0.021
Use #F4F5FB 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.