#A4D3DB
Closest named color: Celeste (#A8DADC). oklch(83.6% 0.05 209.1), rgb(164, 211, 219).
Aa
Black text reads best on this color (12.91:1).
About this color
#A4D3DB is a light, muted teal or cyan. In OKLCH its lightness is 84%, its chroma 0.050 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Celeste (#A8DADC), ΔE 0.020 away. Black text reads best on it, at 12.91:1.
| Hue family | Teals and cyans |
| Lightness | light (84%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Celeste (#A8DADC) |
| Black text | 12.91:1 |
| White text | 1.62:1 |
Values
| HEX | #A4D3DB |
| RGB | rgb(164, 211, 219) |
| HSL | hsl(189, 43%, 75%) |
| OKLCH | oklch(83.6% 0.05 209.1) |
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 #A4D3DB | 1.62:1 | Fails | Lc -31.5 | Non-text elements, placeholder text |
| Black text on #A4D3DB | 12.91:1 | AAA | Lc 75.9 | Fine for body text |
| #A4D3DB text on white | 1.62:1 | Fails | Lc 27.9 | Dividers and decoration only |
| #A4D3DB text on black | 12.91:1 | AAA | Lc -75.0 | 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)
#A4D3DB
oklch(83.6% 0.05 209.1)
-
Step 400
400
#5FAFBC
oklch(70.8% 0.081 209.1)
-
Step 500
500
#1F9AAB
oklch(63.1% 0.103 209.4)
-
Step 600
600
#008291
oklch(55.5% 0.096 208.9)
-
Step 700
700
#006D7A
oklch(49% 0.084 209.1)
-
Step 800
800
#005A65
oklch(42.8% 0.074 209.1)
-
Step 900
900
#004B54
oklch(37.8% 0.065 208.5)
-
Step 950
950
#052C32
oklch(27% 0.043 210.1)
#A4D3DB 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) | #CBCFDC | 0.049 |
| Deuteranopia (no green cones) | #C1C8DB | 0.044 |
| Tritanopia (no blue cones) | #92D7D5 | 0.025 |
| Achromatopsia (no color) | #CBCBCB | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A4D3DB
#A4D3DB
oklch(83.6% 0.05 209.1)
- #E8BEB7
#E8BEB7
oklch(83.6% 0.049 29.2)
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 #A4D3DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Celeste #A8DADC ΔE 0.020
- Light Blue #ADD8E6 ΔE 0.022
- Light Blue Grey #B7C9E2 ΔE 0.038
- Powder Blue #B0E0E6 ΔE 0.039
- Sky Blue #87CEEB ΔE 0.043
- Light Steel Blue #B0C4DE ΔE 0.043
- Cloudy Blue #ACC2D9 ΔE 0.045
- Tiffany Blue #94D2BD ΔE 0.048
Use #A4D3DB 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.