#37CBC3
Closest named color: Dark Turquoise (#00CED1). oklch(76.5% 0.12 189.5), rgb(55, 203, 195).
Aa
Black text reads best on this color (10.49:1).
About this color
#37CBC3 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 77%, its chroma 0.120 and its hue 190°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Turquoise (#00CED1), ΔE 0.020 away. Black text reads best on it, at 10.49:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Dark Turquoise (#00CED1) |
| Black text | 10.49:1 |
| White text | 2.00:1 |
Values
| HEX | #37CBC3 |
| RGB | rgb(55, 203, 195) |
| HSL | hsl(177, 59%, 51%) |
| OKLCH | oklch(76.5% 0.12 189.5) |
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 #37CBC3 | 2.00:1 | Fails | Lc -42.8 | Non-text elements, placeholder text |
| Black text on #37CBC3 | 10.49:1 | AAA | Lc 65.6 | Content text, not long reading |
| #37CBC3 text on white | 2.00:1 | Fails | Lc 38.3 | Non-text elements, placeholder text |
| #37CBC3 text on black | 10.49:1 | AAA | Lc -64.0 | 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
#EAF9F8
oklch(97.1% 0.016 192.1)
-
Step 100
100
#D1F2EF
oklch(93.7% 0.035 189.9)
-
Step 200
200
#A6E8E2
oklch(88.5% 0.067 189)
-
Step 300
300 (this color)
#37CBC3
oklch(76.5% 0.12 189.5)
-
Step 400
400
#00B8B1
oklch(70.6% 0.122 190)
-
Step 500
500
#009E97
oklch(63.1% 0.109 189.2)
-
Step 600
600
#00857F
oklch(55.6% 0.096 189.2)
-
Step 700
700
#00706B
oklch(49.2% 0.085 189.4)
-
Step 800
800
#005C58
oklch(42.8% 0.074 189.6)
-
Step 900
900
#004C49
oklch(37.6% 0.065 190.2)
-
Step 950
950
#002E2B
oklch(27.1% 0.047 188)
#37CBC3 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) | #BFC0C3 | 0.127 |
| Deuteranopia (no green cones) | #AAB1C4 | 0.119 |
| Tritanopia (no blue cones) | #00D0C8 | 0.016 |
| Achromatopsia (no color) | #B7B7B7 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37CBC3
#37CBC3
oklch(76.5% 0.12 189.5)
- #F491A2
#F491A2
oklch(76.5% 0.121 9.3)
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 #37CBC3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Turquoise #00CED1 ΔE 0.020
- Medium Turquoise #48D1CC ΔE 0.022
- Medium Aquamarine #66CDAA ΔE 0.044
- Topaz #13BBAF ΔE 0.052
- Seafoam Blue #78D1B6 ΔE 0.052
- Pale Teal #82CBB2 ΔE 0.055
- Aqua Blue #02D8E9 ΔE 0.055
- Turquoise #40E0D0 ΔE 0.059
Use #37CBC3 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.