#57C8A9
Closest named color: Medium Aquamarine (#66CDAA). oklch(75.9% 0.113 172.4), rgb(87, 200, 169).
Aa
Black text reads best on this color (10.23:1).
About this color
#57C8A9 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 76%, its chroma 0.113 and its hue 172°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.019 away. Black text reads best on it, at 10.23:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 10.23:1 |
| White text | 2.05:1 |
Values
| HEX | #57C8A9 |
| RGB | rgb(87, 200, 169) |
| HSL | hsl(164, 51%, 56%) |
| OKLCH | oklch(75.9% 0.113 172.4) |
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 #57C8A9 | 2.05:1 | Fails | Lc -44.2 | Non-text elements, placeholder text |
| Black text on #57C8A9 | 10.23:1 | AAA | Lc 64.2 | Content text, not long reading |
| #57C8A9 text on white | 2.05:1 | Fails | Lc 39.7 | Non-text elements, placeholder text |
| #57C8A9 text on black | 10.23:1 | AAA | Lc -62.6 | 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
#ECF9F4
oklch(97.1% 0.015 171.1)
-
Step 100
100
#D5F1E7
oklch(93.5% 0.032 172.1)
-
Step 200
200
#AFE7D5
oklch(88.4% 0.062 173.1)
-
Step 300
300 (this color)
#57C8A9
oklch(75.9% 0.113 172.4)
-
Step 400
400
#00BB97
oklch(70.6% 0.136 172.4)
-
Step 500
500
#00A182
oklch(63.2% 0.122 172.6)
-
Step 600
600
#00876D
oklch(55.6% 0.107 172.9)
-
Step 700
700
#00725B
oklch(49.2% 0.095 172.3)
-
Step 800
800
#005D4A
oklch(42.6% 0.082 172.5)
-
Step 900
900
#004E3D
oklch(37.8% 0.073 171.8)
-
Step 950
950
#002E24
oklch(26.9% 0.051 173.7)
#57C8A9 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) | #C2BCA8 | 0.117 |
| Deuteranopia (no green cones) | #B1B0AB | 0.112 |
| Tritanopia (no blue cones) | #0ECABF | 0.037 |
| Achromatopsia (no color) | #B5B5B5 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57C8A9
#57C8A9
oklch(75.9% 0.113 172.4)
- #E892B8
#E892B8
oklch(75.9% 0.113 352.1)
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 #57C8A9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.019
- Pale Teal #82CBB2 ΔE 0.042
- Seafoam Blue #78D1B6 ΔE 0.042
- Medium Turquoise #48D1CC ΔE 0.047
- Emerald #06D6A0 ΔE 0.052
- Greenblue #23C48B ΔE 0.053
- Topaz #13BBAF ΔE 0.054
- Dark Turquoise #00CED1 ΔE 0.056
Use #57C8A9 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.