#57B4B7
Closest named color: Light Sea Green (#20B2AA). oklch(71.5% 0.088 198.2), rgb(87, 180, 183).
Aa
Black text reads best on this color (8.61:1).
About this color
#57B4B7 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.088 and its hue 198°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sea Green (#20B2AA), ΔE 0.039 away. Black text reads best on it, at 8.61:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Light Sea Green (#20B2AA) |
| Black text | 8.61:1 |
| White text | 2.43:1 |
Values
| HEX | #57B4B7 |
| RGB | rgb(87, 180, 183) |
| HSL | hsl(182, 40%, 53%) |
| OKLCH | oklch(71.5% 0.088 198.2) |
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 #57B4B7 | 2.43:1 | Fails | Lc -52.8 | Large or bold text, headings |
| Black text on #57B4B7 | 8.61:1 | AAA | Lc 56.2 | Large or bold text, headings |
| #57B4B7 text on white | 2.43:1 | Fails | Lc 47.8 | Large or bold text, headings |
| #57B4B7 text on black | 8.61:1 | AAA | Lc -54.3 | 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
#F0F7F7
oklch(97.1% 0.007 197)
-
Step 100
100
#DEEDEE
oklch(93.5% 0.016 201.7)
-
Step 200
200
#C3E0E0
oklch(88.6% 0.031 196.6)
-
Step 300
300
#97CCCD
oklch(80.9% 0.055 197.6)
-
Step 400
400 (this color)
#57B4B7
oklch(71.5% 0.088 198.2)
-
Step 500
500
#009DA1
oklch(63.2% 0.107 198)
-
Step 600
600
#008487
oklch(55.6% 0.095 197.6)
-
Step 700
700
#006F72
oklch(49.2% 0.084 198.1)
-
Step 800
800
#005B5D
oklch(42.7% 0.073 197.4)
-
Step 900
900
#004C4E
oklch(37.8% 0.064 197.8)
-
Step 950
950
#002D2F
oklch(27% 0.046 199.4)
#57B4B7 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) | #A9ADB7 | 0.090 |
| Deuteranopia (no green cones) | #99A1B8 | 0.084 |
| Tritanopia (no blue cones) | #00B9B5 | 0.036 |
| Achromatopsia (no color) | #A6A6A6 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57B4B7
#57B4B7
oklch(71.5% 0.088 198.2)
- #D58C8E
#D58C8E
oklch(71.4% 0.089 17.7)
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 #57B4B7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sea Green #20B2AA ΔE 0.039
- Topaz #13BBAF ΔE 0.040
- Turquoise Blue #06B1C4 ΔE 0.040
- Greeny Blue #42B395 ΔE 0.054
- Greyblue #77A1B5 ΔE 0.058
- Bluegrey #85A3B2 ΔE 0.060
- Cadet Blue #5F9EA0 ΔE 0.062
- Bluey Grey #89A0B0 ΔE 0.069
Use #57B4B7 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.