#57BFB5
Closest named color: Topaz (#13BBAF). oklch(74.1% 0.098 186.8), rgb(87, 191, 181).
Aa
Black text reads best on this color (9.52:1).
About this color
#57BFB5 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.098 and its hue 187°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.036 away. Black text reads best on it, at 9.52:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 9.52:1 |
| White text | 2.20:1 |
Values
| HEX | #57BFB5 |
| RGB | rgb(87, 191, 181) |
| HSL | hsl(174, 45%, 55%) |
| OKLCH | oklch(74.1% 0.098 186.8) |
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 #57BFB5 | 2.20:1 | Fails | Lc -47.9 | Large or bold text, headings |
| Black text on #57BFB5 | 9.52:1 | AAA | Lc 60.8 | Content text, not long reading |
| #57BFB5 text on white | 2.20:1 | Fails | Lc 43.2 | Non-text elements, placeholder text |
| #57BFB5 text on black | 9.52:1 | AAA | Lc -59.0 | 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
#DEEEEC
oklch(93.7% 0.017 187.9)
-
Step 200
200
#C1E1DD
oklch(88.5% 0.034 187.4)
-
Step 300
300
#93CEC7
oklch(80.9% 0.061 186.8)
-
Step 400
400 (this color)
#57BFB5
oklch(74.1% 0.098 186.8)
-
Step 500
500
#009F94
oklch(63.2% 0.111 186.2)
-
Step 600
600
#00857D
oklch(55.5% 0.097 187.4)
-
Step 700
700
#007069
oklch(49.1% 0.086 187.3)
-
Step 800
800
#005C56
oklch(42.8% 0.075 187.1)
-
Step 900
900
#004D47
oklch(37.8% 0.066 185.9)
-
Step 950
950
#002E2A
oklch(27.1% 0.048 185.8)
#57BFB5 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) | #B6B6B5 | 0.104 |
| Deuteranopia (no green cones) | #A5A9B6 | 0.098 |
| Tritanopia (no blue cones) | #00C3BC | 0.031 |
| Achromatopsia (no color) | #AFAFAF | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57BFB5
#57BFB5
oklch(74.1% 0.098 186.8)
- #E091A1
#E091A1
oklch(74.1% 0.097 6.5)
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 #57BFB5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.036
- Medium Aquamarine #66CDAA ΔE 0.050
- Dark Turquoise #00CED1 ΔE 0.050
- Medium Turquoise #48D1CC ΔE 0.051
- Light Sea Green #20B2AA ΔE 0.052
- Greeny Blue #42B395 ΔE 0.055
- Pale Teal #82CBB2 ΔE 0.055
- Seafoam Blue #78D1B6 ΔE 0.062
Use #57BFB5 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.