#A3EDF9
Closest named color: Robin's Egg Blue (#98EFF9). oklch(90.2% 0.075 208.6), rgb(163, 237, 249).
Aa
Black text reads best on this color (16.03:1).
About this color
#A3EDF9 is a very light, moderately saturated teal or cyan. In OKLCH its lightness is 90%, its chroma 0.075 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Robin's Egg Blue (#98EFF9), ΔE 0.011 away. Black text reads best on it, at 16.03:1.
| Hue family | Teals and cyans |
| Lightness | very light (90%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Robin's Egg Blue (#98EFF9) |
| Black text | 16.03:1 |
| White text | 1.30:1 |
Values
| HEX | #A3EDF9 |
| RGB | rgb(163, 237, 249) |
| HSL | hsl(188, 88%, 81%) |
| OKLCH | oklch(90.2% 0.075 208.6) |
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 #A3EDF9 | 1.30:1 | Fails | Lc -17.5 | Dividers and decoration only |
| Black text on #A3EDF9 | 16.03:1 | AAA | Lc 88.4 | Fine for body text |
| #A3EDF9 text on white | 1.30:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #A3EDF9 text on black | 16.03:1 | AAA | Lc -88.5 | 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 200.
-
Step 50
50
#ECF8FA
oklch(97.1% 0.013 208.8)
-
Step 100
100
#D6EFF4
oklch(93.5% 0.027 211.1)
-
Step 200
200 (this color)
#A3EDF9
oklch(90.2% 0.075 208.6)
-
Step 300
300
#6ED2E2
oklch(80.9% 0.096 209)
-
Step 400
400
#00B5C9
oklch(70.8% 0.122 208.7)
-
Step 500
500
#009BAC
oklch(63.1% 0.109 208.4)
-
Step 600
600
#008291
oklch(55.5% 0.096 208.9)
-
Step 700
700
#006E7A
oklch(49.2% 0.085 207.9)
-
Step 800
800
#005A64
oklch(42.8% 0.073 207.9)
-
Step 900
900
#004B54
oklch(37.8% 0.065 208.5)
-
Step 950
950
#002C32
oklch(26.8% 0.046 208.8)
#A3EDF9 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) | #E1E7FA | 0.072 |
| Deuteranopia (no green cones) | #D2DCF9 | 0.066 |
| Tritanopia (no blue cones) | #83F3F0 | 0.037 |
| Achromatopsia (no color) | #E1E1E1 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3EDF9
#A3EDF9
oklch(90.2% 0.075 208.6)
- #FFD3CC
#FFD3CC
oklch(90.3% 0.051 28.7)
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 #A3EDF9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Robin's Egg Blue #98EFF9 ΔE 0.011
- Pale Turquoise #AFEEEE ΔE 0.020
- Robin Egg Blue #8AF1FE ΔE 0.023
- Diamond #B9F2FF ΔE 0.029
- Powder Blue #B0E0E6 ΔE 0.036
- Pale Sky Blue #BDF6FE ΔE 0.039
- Robin's Egg #6DEDFD ΔE 0.046
- Light Blue #ADD8E6 ΔE 0.054
Use #A3EDF9 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.