#37CBD3
Closest named color: Dark Turquoise (#00CED1). oklch(77.1% 0.119 200.5), rgb(55, 203, 211).
Aa
Black text reads best on this color (10.64:1).
About this color
#37CBD3 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 77%, its chroma 0.119 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Turquoise (#00CED1), ΔE 0.015 away. Black text reads best on it, at 10.64:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Dark Turquoise (#00CED1) |
| Black text | 10.64:1 |
| White text | 1.97:1 |
Values
| HEX | #37CBD3 |
| RGB | rgb(55, 203, 211) |
| HSL | hsl(183, 64%, 52%) |
| OKLCH | oklch(77.1% 0.119 200.5) |
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 #37CBD3 | 1.97:1 | Fails | Lc -42.0 | Non-text elements, placeholder text |
| Black text on #37CBD3 | 10.64:1 | AAA | Lc 66.3 | Content text, not long reading |
| #37CBD3 text on white | 1.97:1 | Fails | Lc 37.6 | Non-text elements, placeholder text |
| #37CBD3 text on black | 10.64:1 | AAA | Lc -64.8 | 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
#EAF9FA
oklch(97.1% 0.016 201.7)
-
Step 100
100
#D0F1F3
oklch(93.5% 0.034 201.1)
-
Step 200
200
#A5E7EB
oklch(88.5% 0.066 200.8)
-
Step 300
300 (this color)
#37CBD3
oklch(77.1% 0.119 200.5)
-
Step 400
400
#00B6BF
oklch(70.6% 0.12 201.1)
-
Step 500
500
#009CA3
oklch(63% 0.107 200.4)
-
Step 600
600
#008389
oklch(55.5% 0.094 200.5)
-
Step 700
700
#006F74
oklch(49.2% 0.084 200.3)
-
Step 800
800
#005B5F
oklch(42.8% 0.073 200)
-
Step 900
900
#004B4F
oklch(37.5% 0.064 200.9)
-
Step 950
950
#002D2F
oklch(27% 0.046 199.4)
#37CBD3 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) | #BCC2D4 | 0.122 |
| Deuteranopia (no green cones) | #A6B2D4 | 0.112 |
| Tritanopia (no blue cones) | #00D3CD | 0.028 |
| Achromatopsia (no color) | #B9B9B9 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37CBD3
#37CBD3
oklch(77.1% 0.119 200.5)
- #F79594
#F79594
oklch(77.1% 0.119 20.8)
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 #37CBD3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Turquoise #00CED1 ΔE 0.015
- Medium Turquoise #48D1CC ΔE 0.024
- Aqua Blue #02D8E9 ΔE 0.040
- Vivid Sky Blue #4CC9F0 ΔE 0.047
- Bright Sky Blue #02CCFE ΔE 0.062
- Turquoise #40E0D0 ΔE 0.062
- Seafoam Blue #78D1B6 ΔE 0.063
- Medium Aquamarine #66CDAA ΔE 0.063
Use #37CBD3 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.