#DEF9FF
Closest named color: Light Cyan (#E0FFFF). oklch(96.4% 0.029 212.6), rgb(222, 249, 255).
Aa
Black text reads best on this color (19.10:1).
About this color
#DEF9FF is a very light close to neutral grey. In OKLCH its lightness is 96%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Light Cyan (#E0FFFF), ΔE 0.016 away. Black text reads best on it, at 19.10:1.
| Hue family | Neutrals |
| Lightness | very light (96%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Light Cyan (#E0FFFF) |
| Black text | 19.10:1 |
| White text | 1.09:1 |
Values
| HEX | #DEF9FF |
| RGB | rgb(222, 249, 255) |
| HSL | hsl(191, 100%, 94%) |
| OKLCH | oklch(96.4% 0.029 212.6) |
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 #DEF9FF | 1.09:1 | Fails | Lc 0.0 | Not readable |
| Black text on #DEF9FF | 19.10:1 | AAA | Lc 99.5 | Preferred for body text |
| #DEF9FF text on white | 1.09:1 | Fails | Lc 0.0 | Not readable |
| #DEF9FF text on black | 19.10:1 | AAA | Lc -100.7 | 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)
#DEF9FF
oklch(96.4% 0.029 212.6)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CADDE1
oklch(88.5% 0.021 211.8)
-
Step 300
300
#A6C8CF
oklch(81% 0.038 211.5)
-
Step 400
400
#74ABB7
oklch(70.7% 0.06 212.8)
-
Step 500
500
#4C96A5
oklch(63.1% 0.077 212.5)
-
Step 600
600
#298090
oklch(55.6% 0.084 212.4)
-
Step 700
700
#1A6C7B
oklch(49.1% 0.078 213)
-
Step 800
800
#195864
oklch(42.7% 0.065 213)
-
Step 900
900
#1D4951
oklch(37.8% 0.05 211.2)
-
Step 950
950
#122B30
oklch(27.1% 0.032 212.2)
#DEF9FF 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) | #F4F7FF | 0.028 |
| Deuteranopia (no green cones) | #EEF2FF | 0.026 |
| Tritanopia (no blue cones) | #D5FCFB | 0.015 |
| Achromatopsia (no color) | #F4F4F4 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #DEF9FF
#DEF9FF
oklch(96.4% 0.029 212.6)
- #FFEFEC
#FFEFEC
oklch(96.4% 0.018 30.3)
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 #DEF9FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Cyan #E0FFFF ΔE 0.016
- Ice Blue #D7FFFE ΔE 0.018
- Very Pale Blue #D6FFFE ΔE 0.018
- Very Light Blue #D5FFFF ΔE 0.018
- Really Light Blue #D4FFFF ΔE 0.019
- Pale Blue #D0FEFE ΔE 0.020
- Ice #D6FFFA ΔE 0.021
- Alice Blue #F0F8FF ΔE 0.022
Use #DEF9FF 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.