#37DCC4
Closest named color: Turquoise (#40E0D0). oklch(80.7% 0.135 180.4), rgb(55, 220, 196).
Aa
Black text reads best on this color (12.19:1).
About this color
#37DCC4 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 81%, its chroma 0.135 and its hue 180°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise (#40E0D0), ΔE 0.019 away. Black text reads best on it, at 12.19:1.
| Hue family | Teals and cyans |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Turquoise (#40E0D0) |
| Black text | 12.19:1 |
| White text | 1.72:1 |
Values
| HEX | #37DCC4 |
| RGB | rgb(55, 220, 196) |
| HSL | hsl(171, 70%, 54%) |
| OKLCH | oklch(80.7% 0.135 180.4) |
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 #37DCC4 | 1.72:1 | Fails | Lc -34.4 | Non-text elements, placeholder text |
| Black text on #37DCC4 | 12.19:1 | AAA | Lc 73.2 | Content text, not long reading |
| #37DCC4 text on white | 1.72:1 | Fails | Lc 30.6 | Non-text elements, placeholder text |
| #37DCC4 text on black | 12.19:1 | AAA | Lc -72.2 | 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
#E9FAF6
oklch(97.1% 0.019 180.3)
-
Step 100
100
#CFF3EB
oklch(93.6% 0.039 180.5)
-
Step 200
200
#A2EADB
oklch(88.5% 0.075 180)
-
Step 300
300 (this color)
#37DCC4
oklch(80.7% 0.135 180.4)
-
Step 400
400
#00BAA4
oklch(70.7% 0.128 180.3)
-
Step 500
500
#009F8D
oklch(63% 0.114 181)
-
Step 600
600
#008676
oklch(55.6% 0.1 180.5)
-
Step 700
700
#007163
oklch(49.2% 0.089 180.3)
-
Step 800
800
#005C51
oklch(42.6% 0.077 181.1)
-
Step 900
900
#004D43
oklch(37.7% 0.068 180.3)
-
Step 950
950
#002E27
oklch(27% 0.049 179.5)
#37DCC4 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) | #D2CFC3 | 0.142 |
| Deuteranopia (no green cones) | #BCBFC6 | 0.135 |
| Tritanopia (no blue cones) | #00E0D5 | 0.023 |
| Achromatopsia (no color) | #C5C5C5 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37DCC4
#37DCC4
oklch(80.7% 0.135 180.4)
- #FF9FBC
#FF9FBC
oklch(80.7% 0.119 0.6)
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 #37DCC4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise #40E0D0 ΔE 0.019
- Medium Turquoise #48D1CC ΔE 0.037
- Aqua Marine #2EE8BB ΔE 0.040
- Seafoam Blue #78D1B6 ΔE 0.044
- Medium Aquamarine #66CDAA ΔE 0.047
- Dark Turquoise #00CED1 ΔE 0.052
- Emerald #06D6A0 ΔE 0.052
- Aqua Blue #02D8E9 ΔE 0.058
Use #37DCC4 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.