#37C8BC
Closest named color: Dark Turquoise (#00CED1). oklch(75.6% 0.12 186.7), rgb(55, 200, 188).
Aa
Black text reads best on this color (10.15:1).
About this color
#37C8BC is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 76%, its chroma 0.120 and its hue 187°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Turquoise (#00CED1), ΔE 0.029 away. Black text reads best on it, at 10.15:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Dark Turquoise (#00CED1) |
| Black text | 10.15:1 |
| White text | 2.06:1 |
Values
| HEX | #37C8BC |
| RGB | rgb(55, 200, 188) |
| HSL | hsl(175, 57%, 50%) |
| OKLCH | oklch(75.6% 0.12 186.7) |
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 #37C8BC | 2.06:1 | Fails | Lc -44.5 | Non-text elements, placeholder text |
| Black text on #37C8BC | 10.15:1 | AAA | Lc 64.0 | Content text, not long reading |
| #37C8BC text on white | 2.06:1 | Fails | Lc 40.0 | Non-text elements, placeholder text |
| #37C8BC text on black | 10.15:1 | AAA | Lc -62.3 | 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
#EEF8F6
oklch(97.1% 0.011 182.9)
-
Step 100
100
#DBEFEC
oklch(93.7% 0.021 186)
-
Step 200
200
#BBE3DD
oklch(88.6% 0.042 185.3)
-
Step 300
300
#87D1C8
oklch(81% 0.075 186.1)
-
Step 400
400 (this color)
#37C8BC
oklch(75.6% 0.12 186.7)
-
Step 500
500
#009F94
oklch(63.2% 0.111 186.2)
-
Step 600
600
#00857C
oklch(55.5% 0.097 186.5)
-
Step 700
700
#007069
oklch(49.1% 0.086 187.3)
-
Step 800
800
#005C56
oklch(42.8% 0.075 187.1)
-
Step 900
900
#004D47
oklch(37.8% 0.066 185.9)
-
Step 950
950
#002E2A
oklch(27.1% 0.048 185.8)
#37C8BC 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) | #BDBDBC | 0.127 |
| Deuteranopia (no green cones) | #A9AEBD | 0.120 |
| Tritanopia (no blue cones) | #00CDC4 | 0.017 |
| Achromatopsia (no color) | #B4B4B4 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37C8BC
#37C8BC
oklch(75.6% 0.12 186.7)
- #F08EA3
#F08EA3
oklch(75.5% 0.121 6.6)
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 #37C8BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Turquoise #00CED1 ΔE 0.029
- Medium Turquoise #48D1CC ΔE 0.033
- Topaz #13BBAF ΔE 0.042
- Medium Aquamarine #66CDAA ΔE 0.042
- Seafoam Blue #78D1B6 ΔE 0.055
- Pale Teal #82CBB2 ΔE 0.056
- Light Sea Green #20B2AA ΔE 0.065
- Aqua Blue #02D8E9 ΔE 0.066
Use #37C8BC 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.