#A3D9DA
Closest named color: Celeste (#A8DADC). oklch(84.8% 0.055 197.6), rgb(163, 217, 218).
Aa
Black text reads best on this color (13.49:1).
About this color
#A3D9DA is a light, muted teal or cyan. In OKLCH its lightness is 85%, its chroma 0.055 and its hue 198°. Its hue sits on the cool side of the wheel. The nearest named color is Celeste (#A8DADC), ΔE 0.007 away. Black text reads best on it, at 13.49:1.
| Hue family | Teals and cyans |
| Lightness | light (85%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Celeste (#A8DADC) |
| Black text | 13.49:1 |
| White text | 1.55:1 |
Values
| HEX | #A3D9DA |
| RGB | rgb(163, 217, 218) |
| HSL | hsl(181, 43%, 75%) |
| OKLCH | oklch(84.8% 0.055 197.6) |
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 #A3D9DA | 1.55:1 | Fails | Lc -28.8 | Dividers and decoration only |
| Black text on #A3D9DA | 13.49:1 | AAA | Lc 78.3 | Fine for body text |
| #A3D9DA text on white | 1.55:1 | Fails | Lc 25.5 | Dividers and decoration only |
| #A3D9DA text on black | 13.49:1 | AAA | Lc -77.6 | 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
#EFF8F8
oklch(97.2% 0.01 197)
-
Step 100
100
#DBEEEF
oklch(93.5% 0.02 200.6)
-
Step 200
200 (this color)
#A3D9DA
oklch(84.8% 0.055 197.6)
-
Step 300
300
#88CFD1
oklch(80.8% 0.071 198.1)
-
Step 400
400
#23B6BA
oklch(70.7% 0.114 197.8)
-
Step 500
500
#009DA0
oklch(63.1% 0.107 197.2)
-
Step 600
600
#008487
oklch(55.6% 0.095 197.6)
-
Step 700
700
#006F71
oklch(49.1% 0.084 197)
-
Step 800
800
#005B5D
oklch(42.7% 0.073 197.4)
-
Step 900
900
#004C4E
oklch(37.8% 0.064 197.8)
-
Step 950
950
#002D2E
oklch(27% 0.046 197.1)
#A3D9DA 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) | #D2D4DA | 0.058 |
| Deuteranopia (no green cones) | #C7CCDB | 0.054 |
| Tritanopia (no blue cones) | #91DDD9 | 0.021 |
| Achromatopsia (no color) | #CFCFCF | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3D9DA
#A3D9DA
oklch(84.8% 0.055 197.6)
- #F0BFC0
#F0BFC0
oklch(84.8% 0.056 17)
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 #A3D9DA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Celeste #A8DADC ΔE 0.007
- Light Blue #ADD8E6 ΔE 0.022
- Powder Blue #B0E0E6 ΔE 0.028
- Tiffany Blue #94D2BD ΔE 0.046
- Light Blue Grey #B7C9E2 ΔE 0.052
- Cadet Gray #CED4DA ΔE 0.053
- Sky Blue #87CEEB ΔE 0.054
- Light Teal #90E4C1 ΔE 0.057
Use #A3D9DA 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.