#37BBCD
Closest named color: Turquoise Blue (#06B1C4). oklch(73% 0.112 208.5), rgb(55, 187, 205).
Aa
Black text reads best on this color (9.15:1).
About this color
#37BBCD is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.112 and its hue 208°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.035 away. Black text reads best on it, at 9.15:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 9.15:1 |
| White text | 2.29:1 |
Values
| HEX | #37BBCD |
| RGB | rgb(55, 187, 205) |
| HSL | hsl(187, 60%, 51%) |
| OKLCH | oklch(73% 0.112 208.5) |
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 #37BBCD | 2.29:1 | Fails | Lc -49.7 | Large or bold text, headings |
| Black text on #37BBCD | 9.15:1 | AAA | Lc 59.1 | Large or bold text, headings |
| #37BBCD text on white | 2.29:1 | Fails | Lc 44.9 | Non-text elements, placeholder text |
| #37BBCD text on black | 9.15:1 | AAA | Lc -57.3 | Large or bold text, headings |
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
#EFF7F9
oklch(97.1% 0.009 214.3)
-
Step 100
100
#DBEEF1
oklch(93.6% 0.021 208.1)
-
Step 200
200
#BCE1E7
oklch(88.5% 0.04 208.4)
-
Step 300
300
#89CED9
oklch(80.9% 0.071 208.5)
-
Step 400
400 (this color)
#37BBCD
oklch(73% 0.112 208.5)
-
Step 500
500
#009BAC
oklch(63.1% 0.109 208.4)
-
Step 600
600
#008291
oklch(55.5% 0.096 208.9)
-
Step 700
700
#006E7A
oklch(49.2% 0.085 207.9)
-
Step 800
800
#005A64
oklch(42.8% 0.073 207.9)
-
Step 900
900
#004B54
oklch(37.8% 0.065 208.5)
-
Step 950
950
#002C32
oklch(26.8% 0.046 208.8)
#37BBCD 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) | #AAB4CE | 0.107 |
| Deuteranopia (no green cones) | #95A5CD | 0.097 |
| Tritanopia (no blue cones) | #00C4C0 | 0.039 |
| Achromatopsia (no color) | #ABABAB | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37BBCD
#37BBCD
oklch(73% 0.112 208.5)
- #E68C7F
#E68C7F
oklch(73.1% 0.112 28.9)
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 #37BBCD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.035
- Topaz #13BBAF ΔE 0.048
- Dark Turquoise #00CED1 ΔE 0.052
- Light Sea Green #20B2AA ΔE 0.055
- Vivid Sky Blue #4CC9F0 ΔE 0.060
- Medium Turquoise #48D1CC ΔE 0.066
- Deep Sky Blue #00BFFF ΔE 0.071
- Bright Sky Blue #02CCFE ΔE 0.074
Use #37BBCD 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.