#37B6CA
Closest named color: Turquoise Blue (#06B1C4). oklch(71.7% 0.11 210.4), rgb(55, 182, 202).
Aa
Black text reads best on this color (8.70:1).
About this color
#37B6CA is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 72%, its chroma 0.110 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.023 away. Black text reads best on it, at 8.70:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.70:1 |
| White text | 2.41:1 |
Values
| HEX | #37B6CA |
| RGB | rgb(55, 182, 202) |
| HSL | hsl(188, 58%, 50%) |
| OKLCH | oklch(71.7% 0.11 210.4) |
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 #37B6CA | 2.41:1 | Fails | Lc -52.1 | Large or bold text, headings |
| Black text on #37B6CA | 8.70:1 | AAA | Lc 56.9 | Large or bold text, headings |
| #37B6CA text on white | 2.41:1 | Fails | Lc 47.1 | Large or bold text, headings |
| #37B6CA text on black | 8.70:1 | AAA | Lc -54.9 | 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
#DCEEF1
oklch(93.7% 0.019 208.8)
-
Step 200
200
#BDE1E7
oklch(88.6% 0.039 208.8)
-
Step 300
300
#8BCDD9
oklch(80.8% 0.069 210.1)
-
Step 400
400 (this color)
#37B6CA
oklch(71.7% 0.11 210.4)
-
Step 500
500
#009BAE
oklch(63.2% 0.109 210)
-
Step 600
600
#008293
oklch(55.6% 0.096 210.7)
-
Step 700
700
#006D7B
oklch(49% 0.085 210.2)
-
Step 800
800
#005A65
oklch(42.8% 0.074 209.1)
-
Step 900
900
#004B55
oklch(37.8% 0.065 210)
-
Step 950
950
#002C33
oklch(26.9% 0.047 211.1)
#37B6CA 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) | #A5AFCB | 0.104 |
| Deuteranopia (no green cones) | #91A0CA | 0.095 |
| Tritanopia (no blue cones) | #00BFBC | 0.040 |
| Achromatopsia (no color) | #A7A7A7 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37B6CA
#37B6CA
oklch(71.7% 0.11 210.4)
- #E0897A
#E0897A
oklch(71.8% 0.11 30.5)
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 #37B6CA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.023
- Light Sea Green #20B2AA ΔE 0.049
- Topaz #13BBAF ΔE 0.049
- Dark Turquoise #00CED1 ΔE 0.066
- Greyblue #77A1B5 ΔE 0.069
- Vivid Sky Blue #4CC9F0 ΔE 0.071
- Deep Sky Blue #00BFFF ΔE 0.075
- Greeny Blue #42B395 ΔE 0.076
Use #37B6CA 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.