#37ECE5
Closest named color: Bright Aqua (#0BF9EA). oklch(85.6% 0.138 190.8), rgb(55, 236, 229).
Aa
Black text reads best on this color (14.29:1).
About this color
#37ECE5 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 86%, its chroma 0.138 and its hue 191°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Aqua (#0BF9EA), ΔE 0.034 away. Black text reads best on it, at 14.29:1.
| Hue family | Teals and cyans |
| Lightness | light (86%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Bright Aqua (#0BF9EA) |
| Black text | 14.29:1 |
| White text | 1.46:1 |
Values
| HEX | #37ECE5 |
| RGB | rgb(55, 236, 229) |
| HSL | hsl(178, 83%, 57%) |
| OKLCH | oklch(85.6% 0.138 190.8) |
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 #37ECE5 | 1.46:1 | Fails | Lc -24.7 | Dividers and decoration only |
| Black text on #37ECE5 | 14.29:1 | AAA | Lc 82.0 | Fine for body text |
| #37ECE5 text on white | 1.46:1 | Fails | Lc 21.7 | Dividers and decoration only |
| #37ECE5 text on black | 14.29:1 | AAA | Lc -81.6 | 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 200.
-
Step 50
50
#E4FBF9
oklch(97.1% 0.024 190.4)
-
Step 100
100
#C3F5F2
oklch(93.5% 0.051 191.8)
-
Step 200
200 (this color)
#37ECE5
oklch(85.6% 0.138 190.8)
-
Step 300
300
#00DDD6
oklch(81% 0.14 190.7)
-
Step 400
400
#00B8B2
oklch(70.6% 0.122 190.6)
-
Step 500
500
#009E99
oklch(63.1% 0.109 190.8)
-
Step 600
600
#008581
oklch(55.7% 0.096 191.1)
-
Step 700
700
#00706C
oklch(49.2% 0.085 190.4)
-
Step 800
800
#005B58
oklch(42.5% 0.073 190.9)
-
Step 900
900
#004C4A
oklch(37.6% 0.065 191.7)
-
Step 950
950
#002D2C
oklch(26.9% 0.046 192.5)
#37ECE5 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) | #DEDFE5 | 0.146 |
| Deuteranopia (no green cones) | #C5CDE6 | 0.137 |
| Tritanopia (no blue cones) | #00F3E9 | 0.019 |
| Achromatopsia (no color) | #D5D5D5 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37ECE5
#37ECE5
oklch(85.6% 0.138 190.8)
- #FFBBC3
#FFBBC3
oklch(85.7% 0.079 11)
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 #37ECE5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Aqua #0BF9EA ΔE 0.034
- Turquoise #40E0D0 ΔE 0.037
- Bright Light Blue #26F7FD ΔE 0.038
- Robin's Egg #6DEDFD ΔE 0.048
- Bright Turquoise #0FFEF9 ΔE 0.048
- Bright Cyan #41FDFE ΔE 0.051
- Cyan #00FFFF ΔE 0.053
- Aqua Marine #2EE8BB ΔE 0.058
Use #37ECE5 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.