#57B3A8
Closest named color: Light Sea Green (#20B2AA). oklch(70.7% 0.09 185.1), rgb(87, 179, 168).
Aa
Black text reads best on this color (8.41:1).
About this color
#57B3A8 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.090 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sea Green (#20B2AA), ΔE 0.030 away. Black text reads best on it, at 8.41:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Light Sea Green (#20B2AA) |
| Black text | 8.41:1 |
| White text | 2.49:1 |
Values
| HEX | #57B3A8 |
| RGB | rgb(87, 179, 168) |
| HSL | hsl(173, 38%, 52%) |
| OKLCH | oklch(70.7% 0.09 185.1) |
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 #57B3A8 | 2.49:1 | Fails | Lc -53.8 | Large or bold text, headings |
| Black text on #57B3A8 | 8.41:1 | AAA | Lc 55.2 | Large or bold text, headings |
| #57B3A8 text on white | 2.49:1 | Fails | Lc 48.8 | Large or bold text, headings |
| #57B3A8 text on black | 8.41:1 | AAA | Lc -53.2 | Large or bold text, headings |
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 400.
-
Step 50
50
#F0F7F6
oklch(97.1% 0.008 186.9)
-
Step 100
100
#DFEEEB
oklch(93.7% 0.016 182.7)
-
Step 200
200
#C3E0DC
oklch(88.4% 0.031 186.5)
-
Step 300
300
#98CDC5
oklch(80.9% 0.056 184.6)
-
Step 400
400 (this color)
#57B3A8
oklch(70.7% 0.09 185.1)
-
Step 500
500
#009F92
oklch(63.2% 0.111 184.7)
-
Step 600
600
#00857B
oklch(55.5% 0.097 185.6)
-
Step 700
700
#007067
oklch(49% 0.086 185.2)
-
Step 800
800
#005C54
oklch(42.7% 0.075 184.7)
-
Step 900
900
#004D46
oklch(37.8% 0.067 184.5)
-
Step 950
950
#002E29
oklch(27.1% 0.048 183.6)
#57B3A8 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) | #ABAAA8 | 0.095 |
| Deuteranopia (no green cones) | #9C9FA9 | 0.090 |
| Tritanopia (no blue cones) | #21B6AF | 0.028 |
| Achromatopsia (no color) | #A4A4A4 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57B3A8
#57B3A8
oklch(70.7% 0.09 185.1)
- #D18999
#D18999
oklch(70.8% 0.09 5.1)
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 #57B3A8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sea Green #20B2AA ΔE 0.030
- Topaz #13BBAF ΔE 0.034
- Greeny Blue #42B395 ΔE 0.034
- Turquoise Blue #06B1C4 ΔE 0.052
- Cadet Blue #5F9EA0 ΔE 0.058
- Tea #65AB7C ΔE 0.058
- Dull Teal #5F9E8F ΔE 0.060
- Muted Teal #90B494 ΔE 0.061
Use #57B3A8 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.