#37C4DA
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(75.7% 0.119 210.5), rgb(55, 196, 218).
Aa
Black text reads best on this color (10.07:1).
About this color
#37C4DA is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 76%, its chroma 0.119 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.036 away. Black text reads best on it, at 10.07:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 10.07:1 |
| White text | 2.08:1 |
Values
| HEX | #37C4DA |
| RGB | rgb(55, 196, 218) |
| HSL | hsl(188, 69%, 54%) |
| OKLCH | oklch(75.7% 0.119 210.5) |
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 #37C4DA | 2.08:1 | Fails | Lc -44.9 | Non-text elements, placeholder text |
| Black text on #37C4DA | 10.07:1 | AAA | Lc 63.6 | Content text, not long reading |
| #37C4DA text on white | 2.08:1 | Fails | Lc 40.3 | Non-text elements, placeholder text |
| #37C4DA text on black | 10.07:1 | AAA | Lc -61.9 | 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 400.
-
Step 50
50
#EEF7F9
oklch(97% 0.01 212.5)
-
Step 100
100
#DAEEF2
oklch(93.6% 0.022 211)
-
Step 200
200
#BBE1E8
oklch(88.5% 0.041 210)
-
Step 300
300
#86CEDB
oklch(80.9% 0.074 210.1)
-
Step 400
400 (this color)
#37C4DA
oklch(75.7% 0.119 210.5)
-
Step 500
500
#009BAE
oklch(63.2% 0.109 210)
-
Step 600
600
#008293
oklch(55.6% 0.096 210.7)
-
Step 700
700
#006D7C
oklch(49% 0.085 211.2)
-
Step 800
800
#005A66
oklch(42.9% 0.074 210.4)
-
Step 900
900
#004B55
oklch(37.8% 0.065 210)
-
Step 950
950
#002C33
oklch(26.9% 0.047 211.1)
#37C4DA 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) | #B2BDDB | 0.112 |
| Deuteranopia (no green cones) | #9BACDA | 0.102 |
| Tritanopia (no blue cones) | #00CECB | 0.042 |
| Achromatopsia (no color) | #B3B3B3 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37C4DA
#37C4DA
oklch(75.7% 0.119 210.5)
- #F29282
#F29282
oklch(75.6% 0.119 30.2)
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 #37C4DA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.036
- Dark Turquoise #00CED1 ΔE 0.036
- Medium Turquoise #48D1CC ΔE 0.049
- Bright Sky Blue #02CCFE ΔE 0.051
- Aqua Blue #02D8E9 ΔE 0.053
- Deep Sky Blue #00BFFF ΔE 0.061
- Turquoise Blue #06B1C4 ΔE 0.061
- Topaz #13BBAF ΔE 0.066
Use #37C4DA 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.