#DEF3F3
Closest named color: Anti-Flash White (#EDF2F4). oklch(94.9% 0.022 196.8), rgb(222, 243, 243).
Aa
Black text reads best on this color (18.22:1).
About this color
#DEF3F3 is a very light close to neutral grey. In OKLCH its lightness is 95%, its chroma 0.022. It has too little chroma to lean warm or cool. The nearest named color is Anti-Flash White (#EDF2F4), ΔE 0.019 away. Black text reads best on it, at 18.22:1.
| Hue family | Neutrals |
| Lightness | very light (95%) |
| Chroma | close to neutral grey (0.022) |
| Temperature | neutral |
| Nearest name | Anti-Flash White (#EDF2F4) |
| Black text | 18.22:1 |
| White text | 1.15:1 |
Values
| HEX | #DEF3F3 |
| RGB | rgb(222, 243, 243) |
| HSL | hsl(180, 47%, 91%) |
| OKLCH | oklch(94.9% 0.022 196.8) |
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 #DEF3F3 | 1.15:1 | Fails | Lc -8.4 | Not readable |
| Black text on #DEF3F3 | 18.22:1 | AAA | Lc 96.4 | Preferred for body text |
| #DEF3F3 text on white | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #DEF3F3 text on black | 18.22:1 | AAA | Lc -97.2 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100 (this color)
#DEF3F3
oklch(94.9% 0.022 196.8)
-
Step 200
200
#CEDDDC
oklch(88.6% 0.016 192)
-
Step 300
300
#ACC7C7
oklch(81% 0.029 196.6)
-
Step 400
400
#80AAAA
oklch(70.8% 0.045 196.2)
-
Step 500
500
#5E9595
oklch(63.2% 0.058 195.8)
-
Step 600
600
#427F80
oklch(55.6% 0.063 196.9)
-
Step 700
700
#336B6C
oklch(49.1% 0.059 197)
-
Step 800
800
#2C5758
oklch(42.6% 0.048 197.5)
-
Step 900
900
#284848
oklch(37.7% 0.038 195.7)
-
Step 950
950
#182A2A
oklch(26.9% 0.024 195.8)
#DEF3F3 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) | #F0F1F3 | 0.023 |
| Deuteranopia (no green cones) | #ECEDF3 | 0.022 |
| Tritanopia (no blue cones) | #D8F5F3 | 0.009 |
| Achromatopsia (no color) | #EFEFEF | 0.022 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #DEF3F3
#DEF3F3
oklch(94.9% 0.022 196.8)
- #FDE9E9
#FDE9E9
oklch(95% 0.022 17.5)
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 #DEF3F3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Anti-Flash White #EDF2F4 ΔE 0.019
- Pale Blue #D0FEFE ΔE 0.030
- Ice Blue #D7FFFE ΔE 0.030
- Ice #D6FFFA ΔE 0.030
- Very Pale Blue #D6FFFE ΔE 0.030
- Very Light Blue #D5FFFF ΔE 0.030
- Really Light Blue #D4FFFF ΔE 0.030
- White Smoke #F5F5F5 ΔE 0.031
Use #DEF3F3 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.