#A4D4DB
Closest named color: Celeste (#A8DADC). oklch(83.9% 0.051 207.3), rgb(164, 212, 219).
Aa
Black text reads best on this color (13.01:1).
About this color
#A4D4DB is a light, muted teal or cyan. In OKLCH its lightness is 84%, its chroma 0.051 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Celeste (#A8DADC), ΔE 0.017 away. Black text reads best on it, at 13.01:1.
| Hue family | Teals and cyans |
| Lightness | light (84%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Celeste (#A8DADC) |
| Black text | 13.01:1 |
| White text | 1.61:1 |
Values
| HEX | #A4D4DB |
| RGB | rgb(164, 212, 219) |
| HSL | hsl(188, 43%, 75%) |
| OKLCH | oklch(83.9% 0.051 207.3) |
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 #A4D4DB | 1.61:1 | Fails | Lc -31.0 | Non-text elements, placeholder text |
| Black text on #A4D4DB | 13.01:1 | AAA | Lc 76.3 | Fine for body text |
| #A4D4DB text on white | 1.61:1 | Fails | Lc 27.5 | Dividers and decoration only |
| #A4D4DB text on black | 13.01:1 | AAA | Lc -75.5 | 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 300.
-
Step 50
50
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#DFEDEF
oklch(93.6% 0.015 207.1)
-
Step 200
200
#C5DFE3
oklch(88.6% 0.028 207.8)
-
Step 300
300 (this color)
#A4D4DB
oklch(83.9% 0.051 207.3)
-
Step 400
400
#5EAFBA
oklch(70.7% 0.081 207)
-
Step 500
500
#199BA9
oklch(63.2% 0.104 206.6)
-
Step 600
600
#008290
oklch(55.5% 0.095 208)
-
Step 700
700
#006E79
oklch(49.2% 0.084 206.9)
-
Step 800
800
#005A63
oklch(42.7% 0.073 206.6)
-
Step 900
900
#004B53
oklch(37.7% 0.065 207)
-
Step 950
950
#042C31
oklch(26.9% 0.043 207.4)
#A4D4DB 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) | #CCD0DC | 0.050 |
| Deuteranopia (no green cones) | #C2C8DB | 0.046 |
| Tritanopia (no blue cones) | #92D8D6 | 0.024 |
| Achromatopsia (no color) | #CCCCCC | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A4D4DB
#A4D4DB
oklch(83.9% 0.051 207.3)
- #EABEB8
#EABEB8
oklch(83.9% 0.052 27.2)
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 #A4D4DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Celeste #A8DADC ΔE 0.017
- Light Blue #ADD8E6 ΔE 0.021
- Powder Blue #B0E0E6 ΔE 0.037
- Light Blue Grey #B7C9E2 ΔE 0.040
- Sky Blue #87CEEB ΔE 0.044
- Light Steel Blue #B0C4DE ΔE 0.046
- Tiffany Blue #94D2BD ΔE 0.047
- Cloudy Blue #ACC2D9 ΔE 0.048
Use #A4D4DB 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.