#37E4CF
Closest named color: Turquoise (#40E0D0). oklch(83% 0.138 182.6), rgb(55, 228, 207).
Aa
Black text reads best on this color (13.16:1).
About this color
#37E4CF is a light, moderately saturated teal or cyan. In OKLCH its lightness is 83%, its chroma 0.138 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise (#40E0D0), ΔE 0.012 away. Black text reads best on it, at 13.16:1.
| Hue family | Teals and cyans |
| Lightness | light (83%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Turquoise (#40E0D0) |
| Black text | 13.16:1 |
| White text | 1.59:1 |
Values
| HEX | #37E4CF |
| RGB | rgb(55, 228, 207) |
| HSL | hsl(173, 76%, 55%) |
| OKLCH | oklch(83% 0.138 182.6) |
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 #37E4CF | 1.59:1 | Fails | Lc -29.9 | Dividers and decoration only |
| Black text on #37E4CF | 13.16:1 | AAA | Lc 77.3 | Fine for body text |
| #37E4CF text on white | 1.59:1 | Fails | Lc 26.4 | Dividers and decoration only |
| #37E4CF text on black | 13.16:1 | AAA | Lc -76.6 | Fine for body text |
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
#CEF3EC
oklch(93.6% 0.039 182.7)
-
Step 200
200
#9FEADD
oklch(88.4% 0.076 182.5)
-
Step 300
300 (this color)
#37E4CF
oklch(83% 0.138 182.6)
-
Step 400
400
#00BAA7
oklch(70.8% 0.127 182.2)
-
Step 500
500
#009F8F
oklch(63.1% 0.113 182.5)
-
Step 600
600
#008678
oklch(55.6% 0.1 182.2)
-
Step 700
700
#007165
oklch(49.2% 0.088 182.2)
-
Step 800
800
#005C53
oklch(42.6% 0.076 183.4)
-
Step 900
900
#004D45
oklch(37.7% 0.067 183.1)
-
Step 950
950
#002E28
oklch(27% 0.049 181.5)
#37E4CF 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) | #D9D7CE | 0.146 |
| Deuteranopia (no green cones) | #C2C6D1 | 0.138 |
| Tritanopia (no blue cones) | #00E9DD | 0.020 |
| Achromatopsia (no color) | #CDCDCD | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37E4CF
#37E4CF
oklch(83% 0.138 182.6)
- #FFACC1
#FFACC1
oklch(83% 0.1 3)
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 #37E4CF, closest first.
No curated palette has a color within ΔE 0.04 of #37E4CF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise #40E0D0 ΔE 0.012
- Aqua Marine #2EE8BB ΔE 0.034
- Medium Turquoise #48D1CC ΔE 0.052
- Seafoam Blue #78D1B6 ΔE 0.058
- Bright Aqua #0BF9EA ΔE 0.058
- Aqua Blue #02D8E9 ΔE 0.059
- Light Teal #90E4C1 ΔE 0.059
- Bright Teal #01F9C6 ΔE 0.064
Use #37E4CF 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.