#37DDCE
Closest named color: Turquoise (#40E0D0). oklch(81.3% 0.132 185.7), rgb(55, 221, 206).
Aa
Black text reads best on this color (12.39:1).
About this color
#37DDCE is a light, moderately saturated teal or cyan. In OKLCH its lightness is 81%, its chroma 0.132 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise (#40E0D0), ΔE 0.010 away. Black text reads best on it, at 12.39:1.
| Hue family | Teals and cyans |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Turquoise (#40E0D0) |
| Black text | 12.39:1 |
| White text | 1.69:1 |
Values
| HEX | #37DDCE |
| RGB | rgb(55, 221, 206) |
| HSL | hsl(175, 71%, 54%) |
| OKLCH | oklch(81.3% 0.132 185.7) |
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 #37DDCE | 1.69:1 | Fails | Lc -33.5 | Non-text elements, placeholder text |
| Black text on #37DDCE | 12.39:1 | AAA | Lc 74.1 | Content text, not long reading |
| #37DDCE text on white | 1.69:1 | Fails | Lc 29.7 | Dividers and decoration only |
| #37DDCE text on black | 12.39:1 | AAA | Lc -73.1 | 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
#E9FAF7
oklch(97.2% 0.018 184.3)
-
Step 100
100
#CFF3ED
oklch(93.7% 0.038 184.4)
-
Step 200
200
#A1E9E0
oklch(88.4% 0.073 186.2)
-
Step 300
300 (this color)
#37DDCE
oklch(81.3% 0.132 185.7)
-
Step 400
400
#00B9AC
oklch(70.7% 0.124 186)
-
Step 500
500
#009F93
oklch(63.2% 0.111 185.4)
-
Step 600
600
#00857B
oklch(55.5% 0.097 185.6)
-
Step 700
700
#007068
oklch(49.1% 0.086 186.2)
-
Step 800
800
#005C55
oklch(42.7% 0.075 185.9)
-
Step 900
900
#004D47
oklch(37.8% 0.066 185.9)
-
Step 950
950
#002E2A
oklch(27.1% 0.048 185.8)
#37DDCE 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) | #D1D0CE | 0.140 |
| Deuteranopia (no green cones) | #BBC0D0 | 0.133 |
| Tritanopia (no blue cones) | #00E2D8 | 0.017 |
| Achromatopsia (no color) | #C7C7C7 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37DDCE
#37DDCE
oklch(81.3% 0.132 185.7)
- #FFA3B7
#FFA3B7
oklch(81.2% 0.111 5.7)
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 #37DDCE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise #40E0D0 ΔE 0.010
- Medium Turquoise #48D1CC ΔE 0.033
- Aqua Blue #02D8E9 ΔE 0.046
- Aqua Marine #2EE8BB ΔE 0.047
- Dark Turquoise #00CED1 ΔE 0.048
- Seafoam Blue #78D1B6 ΔE 0.048
- Medium Aquamarine #66CDAA ΔE 0.055
- Pale Teal #82CBB2 ΔE 0.063
Use #37DDCE 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.