#57CEBA
Closest named color: Medium Aquamarine (#66CDAA). oklch(77.8% 0.111 180.4), rgb(87, 206, 186).
Aa
Black text reads best on this color (10.94:1).
About this color
#57CEBA is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 78%, its chroma 0.111 and its hue 180°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.022 away. Black text reads best on it, at 10.94:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (78%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 10.94:1 |
| White text | 1.91:1 |
Values
| HEX | #57CEBA |
| RGB | rgb(87, 206, 186) |
| HSL | hsl(170, 55%, 57%) |
| OKLCH | oklch(77.8% 0.111 180.4) |
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 #57CEBA | 1.91:1 | Fails | Lc -40.7 | Non-text elements, placeholder text |
| Black text on #57CEBA | 10.94:1 | AAA | Lc 67.5 | Content text, not long reading |
| #57CEBA text on white | 1.91:1 | Fails | Lc 36.4 | Non-text elements, placeholder text |
| #57CEBA text on black | 10.94:1 | AAA | Lc -66.1 | 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
#EBF9F6
oklch(97.1% 0.015 181.8)
-
Step 100
100
#D4F1EB
oklch(93.5% 0.031 181.8)
-
Step 200
200
#ADE7DB
oklch(88.5% 0.061 180.7)
-
Step 300
300 (this color)
#57CEBA
oklch(77.8% 0.111 180.4)
-
Step 400
400
#00BAA4
oklch(70.7% 0.128 180.3)
-
Step 500
500
#009F8D
oklch(63% 0.114 181)
-
Step 600
600
#008676
oklch(55.6% 0.1 180.5)
-
Step 700
700
#007163
oklch(49.2% 0.089 180.3)
-
Step 800
800
#005C51
oklch(42.6% 0.077 181.1)
-
Step 900
900
#004D43
oklch(37.7% 0.068 180.3)
-
Step 950
950
#002E27
oklch(27% 0.049 179.5)
#57CEBA 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) | #C6C3B9 | 0.118 |
| Deuteranopia (no green cones) | #B4B6BC | 0.111 |
| Tritanopia (no blue cones) | #00D1C8 | 0.030 |
| Achromatopsia (no color) | #BBBBBB | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57CEBA
#57CEBA
oklch(77.8% 0.111 180.4)
- #F198B3
#F198B3
oklch(77.7% 0.111 0.4)
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 #57CEBA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.022
- Medium Turquoise #48D1CC ΔE 0.024
- Seafoam Blue #78D1B6 ΔE 0.029
- Pale Teal #82CBB2 ΔE 0.035
- Dark Turquoise #00CED1 ΔE 0.040
- Turquoise #40E0D0 ΔE 0.049
- Tiffany Blue #94D2BD ΔE 0.057
- Emerald #06D6A0 ΔE 0.058
Use #57CEBA 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.