#37A8A3
Closest named color: Light Sea Green (#20B2AA). oklch(66.8% 0.1 190.8), rgb(55, 168, 163).
Aa
Black text reads best on this color (7.29:1).
About this color
#37A8A3 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 67%, its chroma 0.100 and its hue 191°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sea Green (#20B2AA), ΔE 0.028 away. Black text reads best on it, at 7.29:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Light Sea Green (#20B2AA) |
| Black text | 7.29:1 |
| White text | 2.87:1 |
Values
| HEX | #37A8A3 |
| RGB | rgb(55, 168, 163) |
| HSL | hsl(177, 51%, 44%) |
| OKLCH | oklch(66.8% 0.1 190.8) |
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 #37A8A3 | 2.87:1 | Fails | Lc -60.0 | Content text, not long reading |
| Black text on #37A8A3 | 7.29:1 | AAA | Lc 49.3 | Large or bold text, headings |
| #37A8A3 text on white | 2.87:1 | Fails | Lc 54.7 | Large or bold text, headings |
| #37A8A3 text on black | 7.29:1 | AAA | Lc -47.1 | 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 500.
-
Step 50
50
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E0EDEC
oklch(93.6% 0.014 191.4)
-
Step 200
200
#C6DFDD
oklch(88.5% 0.027 190.8)
-
Step 300
300
#9DCBC8
oklch(80.9% 0.048 191.3)
-
Step 400
400
#62B0AC
oklch(70.6% 0.078 191.2)
-
Step 500
500 (this color)
#37A8A3
oklch(66.8% 0.1 190.8)
-
Step 600
600
#008580
oklch(55.7% 0.096 190.1)
-
Step 700
700
#00706C
oklch(49.2% 0.085 190.4)
-
Step 800
800
#005B58
oklch(42.5% 0.073 190.9)
-
Step 900
900
#004C4A
oklch(37.6% 0.065 191.7)
-
Step 950
950
#072D2B
oklch(27.1% 0.041 189.9)
#37A8A3 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) | #9E9FA3 | 0.105 |
| Deuteranopia (no green cones) | #8D93A4 | 0.098 |
| Tritanopia (no blue cones) | #00ADA6 | 0.018 |
| Achromatopsia (no color) | #989898 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37A8A3
#37A8A3
oklch(66.8% 0.1 190.8)
- #CA7A86
#CA7A86
oklch(66.8% 0.101 10.4)
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 #37A8A3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sea Green #20B2AA ΔE 0.028
- Cadet Blue #5F9EA0 ΔE 0.038
- Dull Teal #5F9E8F ΔE 0.040
- Persian Green #2A9D8F ΔE 0.040
- Sea #3C9992 ΔE 0.044
- Greeny Blue #42B395 ΔE 0.045
- Grey Teal #5E9B8A ΔE 0.046
- Turquoise Blue #06B1C4 ΔE 0.048
Use #37A8A3 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.