#A3ECFB
Closest named color: Robin's Egg Blue (#98EFF9). oklch(90% 0.075 211.9), rgb(163, 236, 251).
Aa
Black text reads best on this color (15.94:1).
About this color
#A3ECFB is a very light, moderately saturated teal or cyan. In OKLCH its lightness is 90%, its chroma 0.075 and its hue 212°. Its hue sits on the cool side of the wheel. The nearest named color is Robin's Egg Blue (#98EFF9), ΔE 0.014 away. Black text reads best on it, at 15.94:1.
| 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 | 15.94:1 |
| White text | 1.31:1 |
Values
| HEX | #A3ECFB |
| RGB | rgb(163, 236, 251) |
| HSL | hsl(190, 92%, 81%) |
| OKLCH | oklch(90% 0.075 211.9) |
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 #A3ECFB | 1.31:1 | Fails | Lc -17.9 | Dividers and decoration only |
| Black text on #A3ECFB | 15.94:1 | AAA | Lc 88.1 | Fine for body text |
| #A3ECFB text on white | 1.31:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #A3ECFB text on black | 15.94:1 | AAA | Lc -88.2 | 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
#D6EFF5
oklch(93.6% 0.028 213.8)
-
Step 200
200 (this color)
#A3ECFB
oklch(90% 0.075 211.9)
-
Step 300
300
#6FD1E5
oklch(80.8% 0.096 212.6)
-
Step 400
400
#00B4CD
oklch(70.7% 0.123 212.1)
-
Step 500
500
#009AB0
oklch(63% 0.11 212.4)
-
Step 600
600
#008294
oklch(55.7% 0.097 211.6)
-
Step 700
700
#006D7D
oklch(49.1% 0.086 212.3)
-
Step 800
800
#005966
oklch(42.6% 0.074 211.8)
-
Step 900
900
#004A56
oklch(37.6% 0.066 213)
-
Step 950
950
#002C34
oklch(26.9% 0.047 213.2)
#A3ECFB 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) | #DFE7FC | 0.070 |
| Deuteranopia (no green cones) | #D1DCFB | 0.064 |
| Tritanopia (no blue cones) | #82F3F0 | 0.041 |
| Achromatopsia (no color) | #E0E0E0 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3ECFB
#A3ECFB
oklch(90% 0.075 211.9)
- #FFD2C9
#FFD2C9
oklch(90% 0.052 31.3)
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 #A3ECFB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Robin's Egg Blue #98EFF9 ΔE 0.014
- Pale Turquoise #AFEEEE ΔE 0.023
- Robin Egg Blue #8AF1FE ΔE 0.024
- Diamond #B9F2FF ΔE 0.030
- Powder Blue #B0E0E6 ΔE 0.036
- Pale Sky Blue #BDF6FE ΔE 0.041
- Robin's Egg #6DEDFD ΔE 0.046
- Light Blue #ADD8E6 ΔE 0.052
Use #A3ECFB 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.