#57BFA4
Closest named color: Topaz (#13BBAF). oklch(73.5% 0.105 173.8), rgb(87, 191, 164).
Aa
Black text reads best on this color (9.39:1).
About this color
#57BFA4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.105 and its hue 174°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.037 away. Black text reads best on it, at 9.39:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 9.39:1 |
| White text | 2.23:1 |
Values
| HEX | #57BFA4 |
| RGB | rgb(87, 191, 164) |
| HSL | hsl(164, 45%, 55%) |
| OKLCH | oklch(73.5% 0.105 173.8) |
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 #57BFA4 | 2.23:1 | Fails | Lc -48.6 | Large or bold text, headings |
| Black text on #57BFA4 | 9.39:1 | AAA | Lc 60.1 | Content text, not long reading |
| #57BFA4 text on white | 2.23:1 | Fails | Lc 43.8 | Non-text elements, placeholder text |
| #57BFA4 text on black | 9.39:1 | AAA | Lc -58.3 | 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
#F0F7F5
oklch(97% 0.008 177.3)
-
Step 100
100
#DEEEE9
oklch(93.6% 0.018 175.3)
-
Step 200
200
#C2E1D7
oklch(88.4% 0.035 174)
-
Step 300
300
#94CFBD
oklch(80.9% 0.066 173.7)
-
Step 400
400 (this color)
#57BFA4
oklch(73.5% 0.105 173.8)
-
Step 500
500
#00A184
oklch(63.2% 0.121 173.8)
-
Step 600
600
#00876E
oklch(55.6% 0.106 173.6)
-
Step 700
700
#00725C
oklch(49.2% 0.094 173.1)
-
Step 800
800
#005D4B
oklch(42.7% 0.081 173.5)
-
Step 900
900
#004E3E
oklch(37.8% 0.073 172.9)
-
Step 950
950
#002E24
oklch(26.9% 0.051 173.7)
#57BFA4 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) | #B9B4A3 | 0.109 |
| Deuteranopia (no green cones) | #A9A9A6 | 0.104 |
| Tritanopia (no blue cones) | #1EC1B7 | 0.034 |
| Achromatopsia (no color) | #ADADAD | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57BFA4
#57BFA4
oklch(73.5% 0.105 173.8)
- #DD8DAE
#DD8DAE
oklch(73.5% 0.105 353.7)
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 #57BFA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.037
- Greeny Blue #42B395 ΔE 0.042
- Medium Aquamarine #66CDAA ΔE 0.043
- Green Blue #01C08D ΔE 0.051
- Greenblue #23C48B ΔE 0.052
- Light Sea Green #20B2AA ΔE 0.054
- Dark Sea Green #8FBC8F ΔE 0.055
- Pale Teal #82CBB2 ΔE 0.057
Use #57BFA4 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.