#37D2DD
Closest named color: Aqua Blue (#02D8E9). oklch(79.1% 0.124 202.2), rgb(55, 210, 221).
Aa
Black text reads best on this color (11.42:1).
About this color
#37D2DD is a light, moderately saturated teal or cyan. In OKLCH its lightness is 79%, its chroma 0.124 and its hue 202°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Blue (#02D8E9), ΔE 0.020 away. Black text reads best on it, at 11.42:1.
| Hue family | Teals and cyans |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Aqua Blue (#02D8E9) |
| Black text | 11.42:1 |
| White text | 1.83:1 |
Values
| HEX | #37D2DD |
| RGB | rgb(55, 210, 221) |
| HSL | hsl(184, 71%, 54%) |
| OKLCH | oklch(79.1% 0.124 202.2) |
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 #37D2DD | 1.83:1 | Fails | Lc -38.1 | Non-text elements, placeholder text |
| Black text on #37D2DD | 11.42:1 | AAA | Lc 69.8 | Content text, not long reading |
| #37D2DD text on white | 1.83:1 | Fails | Lc 34.0 | Non-text elements, placeholder text |
| #37D2DD text on black | 11.42:1 | AAA | Lc -68.6 | 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
#E9F9FA
oklch(97.1% 0.017 201.4)
-
Step 100
100
#CFF2F4
oklch(93.7% 0.036 200.8)
-
Step 200
200
#A3E7ED
oklch(88.5% 0.068 202.9)
-
Step 300
300 (this color)
#37D2DD
oklch(79.1% 0.124 202.2)
-
Step 400
400
#00B6C1
oklch(70.7% 0.12 202.5)
-
Step 500
500
#009CA5
oklch(63.1% 0.107 202)
-
Step 600
600
#00838B
oklch(55.5% 0.095 202.3)
-
Step 700
700
#006E75
oklch(49% 0.083 202.5)
-
Step 800
800
#005A60
oklch(42.6% 0.073 202.7)
-
Step 900
900
#004B50
oklch(37.6% 0.064 202.5)
-
Step 950
950
#002D30
oklch(27% 0.046 201.8)
#37D2DD 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) | #C1C9DE | 0.123 |
| Deuteranopia (no green cones) | #AAB8DE | 0.114 |
| Tritanopia (no blue cones) | #00DAD5 | 0.030 |
| Achromatopsia (no color) | #BFBFBF | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37D2DD
#37D2DD
oklch(79.1% 0.124 202.2)
- #FF9B98
#FF9B98
oklch(79.1% 0.12 22)
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 #37D2DD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Blue #02D8E9 ΔE 0.020
- Medium Turquoise #48D1CC ΔE 0.024
- Dark Turquoise #00CED1 ΔE 0.024
- Vivid Sky Blue #4CC9F0 ΔE 0.044
- Turquoise #40E0D0 ΔE 0.049
- Bright Sky Blue #02CCFE ΔE 0.056
- Sky Blue #87CEEB ΔE 0.063
- Seafoam Blue #78D1B6 ΔE 0.063
Use #37D2DD 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.