#37D8BD
Closest named color: Turquoise (#40E0D0). oklch(79.5% 0.134 178.5), rgb(55, 216, 189).
Aa
Black text reads best on this color (11.71:1).
About this color
#37D8BD is a light, moderately saturated teal or cyan. In OKLCH its lightness is 80%, its chroma 0.134 and its hue 178°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise (#40E0D0), ΔE 0.031 away. Black text reads best on it, at 11.71:1.
| Hue family | Teals and cyans |
| Lightness | light (80%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Turquoise (#40E0D0) |
| Black text | 11.71:1 |
| White text | 1.79:1 |
Values
| HEX | #37D8BD |
| RGB | rgb(55, 216, 189) |
| HSL | hsl(170, 67%, 53%) |
| OKLCH | oklch(79.5% 0.134 178.5) |
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 #37D8BD | 1.79:1 | Fails | Lc -36.7 | Non-text elements, placeholder text |
| Black text on #37D8BD | 11.71:1 | AAA | Lc 71.1 | Content text, not long reading |
| #37D8BD text on white | 1.79:1 | Fails | Lc 32.7 | Non-text elements, placeholder text |
| #37D8BD text on black | 11.71:1 | AAA | Lc -69.9 | 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 300.
-
Step 50
50
#E9FAF5
oklch(97.1% 0.019 176.5)
-
Step 100
100
#CFF3EA
oklch(93.6% 0.039 178.6)
-
Step 200
200
#A3EAD9
oklch(88.5% 0.075 177.9)
-
Step 300
300 (this color)
#37D8BD
oklch(79.5% 0.134 178.5)
-
Step 400
400
#00BAA1
oklch(70.6% 0.129 178.5)
-
Step 500
500
#00A08A
oklch(63.2% 0.116 178.3)
-
Step 600
600
#008674
oklch(55.5% 0.101 178.9)
-
Step 700
700
#007161
oklch(49.1% 0.09 178.4)
-
Step 800
800
#005D4F
oklch(42.8% 0.079 177.8)
-
Step 900
900
#004D42
oklch(37.6% 0.069 179)
-
Step 950
950
#002E27
oklch(27% 0.049 179.5)
#37D8BD 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) | #CFCBBC | 0.141 |
| Deuteranopia (no green cones) | #BABBBF | 0.135 |
| Tritanopia (no blue cones) | #00DBD0 | 0.025 |
| Achromatopsia (no color) | #C1C1C1 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37D8BD
#37D8BD
oklch(79.5% 0.134 178.5)
- #FF98BB
#FF98BB
oklch(79.6% 0.129 358.6)
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 #37D8BD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise #40E0D0 ΔE 0.031
- Medium Turquoise #48D1CC ΔE 0.035
- Medium Aquamarine #66CDAA ΔE 0.037
- Seafoam Blue #78D1B6 ΔE 0.041
- Emerald #06D6A0 ΔE 0.043
- Aqua Marine #2EE8BB ΔE 0.046
- Dark Turquoise #00CED1 ΔE 0.048
- Pale Teal #82CBB2 ΔE 0.055
Use #37D8BD 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.