#57D5EE
Closest named color: Aqua Blue (#02D8E9). oklch(81.2% 0.115 213.1), rgb(87, 213, 238).
Aa
Black text reads best on this color (12.15:1).
About this color
#57D5EE is a light, moderately saturated teal or cyan. In OKLCH its lightness is 81%, its chroma 0.115 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Blue (#02D8E9), ΔE 0.029 away. Black text reads best on it, at 12.15:1.
| Hue family | Teals and cyans |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Aqua Blue (#02D8E9) |
| Black text | 12.15:1 |
| White text | 1.72:1 |
Values
| HEX | #57D5EE |
| RGB | rgb(87, 213, 238) |
| HSL | hsl(190, 82%, 64%) |
| OKLCH | oklch(81.2% 0.115 213.1) |
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 #57D5EE | 1.72:1 | Fails | Lc -34.8 | Non-text elements, placeholder text |
| Black text on #57D5EE | 12.15:1 | AAA | Lc 72.9 | Content text, not long reading |
| #57D5EE text on white | 1.72:1 | Fails | Lc 30.9 | Non-text elements, placeholder text |
| #57D5EE text on black | 12.15:1 | AAA | Lc -71.8 | Content text, not long reading |
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
#EAF8FC
oklch(97% 0.016 216.7)
-
Step 100
100
#D2F0F7
oklch(93.6% 0.033 213.4)
-
Step 200
200
#A8E5F2
oklch(88.5% 0.064 212.3)
-
Step 300
300 (this color)
#57D5EE
oklch(81.2% 0.115 213.1)
-
Step 400
400
#00B4CE
oklch(70.7% 0.124 212.8)
-
Step 500
500
#009AB1
oklch(63% 0.11 213.1)
-
Step 600
600
#008295
oklch(55.7% 0.097 212.5)
-
Step 700
700
#006D7E
oklch(49.1% 0.086 213.3)
-
Step 800
800
#005967
oklch(42.6% 0.075 213)
-
Step 900
900
#004A56
oklch(37.6% 0.066 213)
-
Step 950
950
#002C34
oklch(26.9% 0.047 213.2)
#57D5EE 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) | #C2CEEF | 0.105 |
| Deuteranopia (no green cones) | #ACBEEE | 0.096 |
| Tritanopia (no blue cones) | #00DFDD | 0.050 |
| Achromatopsia (no color) | #C5C5C5 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57D5EE
#57D5EE
oklch(81.2% 0.115 213.1)
- #FFA895
#FFA895
oklch(81.3% 0.107 32.9)
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 #57D5EE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Blue #02D8E9 ΔE 0.029
- Vivid Sky Blue #4CC9F0 ΔE 0.036
- Sky Blue #87CEEB ΔE 0.040
- Lightblue #7BC8F6 ΔE 0.047
- Light Sky Blue #87CEFA ΔE 0.048
- Bright Sky Blue #02CCFE ΔE 0.049
- Medium Turquoise #48D1CC ΔE 0.050
- Sky #82CAFC ΔE 0.052
Use #57D5EE 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.