#A4D9DB
Closest named color: Celeste (#A8DADC). oklch(84.9% 0.055 199.1), rgb(164, 217, 219).
Aa
Black text reads best on this color (13.52:1).
About this color
#A4D9DB is a light, muted teal or cyan. In OKLCH its lightness is 85%, its chroma 0.055 and its hue 199°. Its hue sits on the cool side of the wheel. The nearest named color is Celeste (#A8DADC), ΔE 0.006 away. Black text reads best on it, at 13.52:1.
| Hue family | Teals and cyans |
| Lightness | light (85%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Celeste (#A8DADC) |
| Black text | 13.52:1 |
| White text | 1.55:1 |
Values
| HEX | #A4D9DB |
| RGB | rgb(164, 217, 219) |
| HSL | hsl(182, 43%, 75%) |
| OKLCH | oklch(84.9% 0.055 199.1) |
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 #A4D9DB | 1.55:1 | Fails | Lc -28.7 | Dividers and decoration only |
| Black text on #A4D9DB | 13.52:1 | AAA | Lc 78.4 | Fine for body text |
| #A4D9DB text on white | 1.55:1 | Fails | Lc 25.3 | Dividers and decoration only |
| #A4D9DB text on black | 13.52:1 | AAA | Lc -77.7 | Fine 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 200.
-
Step 50
50
#EFF7F8
oklch(97% 0.009 205.9)
-
Step 100
100
#DBEEEF
oklch(93.5% 0.02 200.6)
-
Step 200
200 (this color)
#A4D9DB
oklch(84.9% 0.055 199.1)
-
Step 300
300
#89CFD2
oklch(80.9% 0.07 199.3)
-
Step 400
400
#29B5BB
oklch(70.6% 0.112 199.4)
-
Step 500
500
#009DA2
oklch(63.2% 0.107 198.8)
-
Step 600
600
#008488
oklch(55.7% 0.095 198.5)
-
Step 700
700
#006F73
oklch(49.2% 0.084 199.2)
-
Step 800
800
#005B5E
oklch(42.8% 0.073 198.7)
-
Step 900
900
#004C4E
oklch(37.8% 0.064 197.8)
-
Step 950
950
#002D2F
oklch(27% 0.046 199.4)
#A4D9DB 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) | #D2D4DB | 0.057 |
| Deuteranopia (no green cones) | #C7CCDB | 0.052 |
| Tritanopia (no blue cones) | #92DDD9 | 0.022 |
| Achromatopsia (no color) | #CFCFCF | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A4D9DB
#A4D9DB
oklch(84.9% 0.055 199.1)
- #EFC0BF
#EFC0BF
oklch(84.9% 0.054 19.7)
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 #A4D9DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Celeste #A8DADC ΔE 0.006
- Light Blue #ADD8E6 ΔE 0.020
- Powder Blue #B0E0E6 ΔE 0.027
- Tiffany Blue #94D2BD ΔE 0.047
- Light Blue Grey #B7C9E2 ΔE 0.051
- Cadet Gray #CED4DA ΔE 0.051
- Sky Blue #87CEEB ΔE 0.054
- Light Gray #D3D3D3 ΔE 0.057
Use #A4D9DB 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.