#57C4BF
Closest named color: Medium Turquoise (#48D1CC). oklch(75.6% 0.1 191.1), rgb(87, 196, 191).
Aa
Black text reads best on this color (10.05:1).
About this color
#57C4BF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 76%, its chroma 0.100 and its hue 191°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Turquoise (#48D1CC), ΔE 0.035 away. Black text reads best on it, at 10.05:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Medium Turquoise (#48D1CC) |
| Black text | 10.05:1 |
| White text | 2.08:1 |
Values
| HEX | #57C4BF |
| RGB | rgb(87, 196, 191) |
| HSL | hsl(177, 48%, 55%) |
| OKLCH | oklch(75.6% 0.1 191.1) |
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 #57C4BF | 2.08:1 | Fails | Lc -45.2 | Large or bold text, headings |
| Black text on #57C4BF | 10.05:1 | AAA | Lc 63.3 | Content text, not long reading |
| #57C4BF text on white | 2.08:1 | Fails | Lc 40.6 | Non-text elements, placeholder text |
| #57C4BF text on black | 10.05:1 | AAA | Lc -61.7 | 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 400.
-
Step 50
50
#EFF7F7
oklch(97% 0.008 197)
-
Step 100
100
#DDEEED
oklch(93.6% 0.018 192.6)
-
Step 200
200
#C0E1DF
oklch(88.5% 0.035 192)
-
Step 300
300
#91CECA
oklch(80.9% 0.063 190.9)
-
Step 400
400 (this color)
#57C4BF
oklch(75.6% 0.1 191.1)
-
Step 500
500
#009E99
oklch(63.1% 0.109 190.8)
-
Step 600
600
#008581
oklch(55.7% 0.096 191.1)
-
Step 700
700
#00706C
oklch(49.2% 0.085 190.4)
-
Step 800
800
#005B59
oklch(42.6% 0.073 192.2)
-
Step 900
900
#004C4A
oklch(37.6% 0.065 191.7)
-
Step 950
950
#002D2C
oklch(26.9% 0.046 192.5)
#57C4BF 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) | #BABBBF | 0.106 |
| Deuteranopia (no green cones) | #A8AEC0 | 0.099 |
| Tritanopia (no blue cones) | #00C9C2 | 0.030 |
| Achromatopsia (no color) | #B3B3B3 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57C4BF
#57C4BF
oklch(75.6% 0.1 191.1)
- #E795A0
#E795A0
oklch(75.5% 0.1 11)
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 #57C4BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Turquoise #48D1CC ΔE 0.035
- Dark Turquoise #00CED1 ΔE 0.037
- Medium Aquamarine #66CDAA ΔE 0.047
- Topaz #13BBAF ΔE 0.048
- Pale Teal #82CBB2 ΔE 0.048
- Seafoam Blue #78D1B6 ΔE 0.053
- Light Sea Green #20B2AA ΔE 0.066
- Aqua Blue #02D8E9 ΔE 0.068
Use #57C4BF 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.