#DEF3FB
Closest named color: Anti-Flash White (#EDF2F4). oklch(95.1% 0.025 222.6), rgb(222, 243, 251).
Aa
Black text reads best on this color (18.31:1).
About this color
#DEF3FB is a very light close to neutral grey. In OKLCH its lightness is 95%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Anti-Flash White (#EDF2F4), ΔE 0.020 away. Black text reads best on it, at 18.31:1.
| Hue family | Neutrals |
| Lightness | very light (95%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Anti-Flash White (#EDF2F4) |
| Black text | 18.31:1 |
| White text | 1.14:1 |
Values
| HEX | #DEF3FB |
| RGB | rgb(222, 243, 251) |
| HSL | hsl(197, 78%, 93%) |
| OKLCH | oklch(95.1% 0.025 222.6) |
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 #DEF3FB | 1.14:1 | Fails | Lc -8.0 | Not readable |
| Black text on #DEF3FB | 18.31:1 | AAA | Lc 96.7 | Preferred for body text |
| #DEF3FB text on white | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #DEF3FB text on black | 18.31:1 | AAA | Lc -97.6 | 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 100.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100 (this color)
#DEF3FB
oklch(95.1% 0.025 222.6)
-
Step 200
200
#CDDCE2
oklch(88.5% 0.018 223.6)
-
Step 300
300
#ABC6D0
oklch(81% 0.032 222.1)
-
Step 400
400
#7EA8B8
oklch(70.7% 0.051 223.4)
-
Step 500
500
#5C93A6
oklch(63.2% 0.065 222)
-
Step 600
600
#407D91
oklch(55.7% 0.07 221.7)
-
Step 700
700
#31697C
oklch(49.1% 0.066 222.9)
-
Step 800
800
#2A5665
oklch(42.8% 0.054 222.6)
-
Step 900
900
#274752
oklch(37.8% 0.042 222.2)
-
Step 950
950
#172930
oklch(26.9% 0.027 224.6)
#DEF3FB 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) | #EEF2FB | 0.020 |
| Deuteranopia (no green cones) | #EAEEFB | 0.019 |
| Tritanopia (no blue cones) | #D6F6F5 | 0.016 |
| Achromatopsia (no color) | #EFEFEF | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #DEF3FB
#DEF3FB
oklch(95.1% 0.025 222.6)
- #FEEAE2
#FEEAE2
oklch(95.1% 0.024 43.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #DEF3FB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Anti-Flash White #EDF2F4 ΔE 0.020
- Alice Blue #F0F8FF ΔE 0.028
- Ice Blue #D7FFFE ΔE 0.030
- Pale Blue #D0FEFE ΔE 0.030
- Light Cyan #E0FFFF ΔE 0.030
- Very Light Blue #D5FFFF ΔE 0.031
- Very Pale Blue #D6FFFE ΔE 0.031
- Really Light Blue #D4FFFF ΔE 0.031
Use #DEF3FB 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.