#37A69A
Closest named color: Persian Green (#2A9D8F). oklch(66% 0.1 184.8), rgb(55, 166, 154).
Aa
Black text reads best on this color (7.08:1).
About this color
#37A69A is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.100 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Persian Green (#2A9D8F), ΔE 0.030 away. Black text reads best on it, at 7.08:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Persian Green (#2A9D8F) |
| Black text | 7.08:1 |
| White text | 2.96:1 |
Values
| HEX | #37A69A |
| RGB | rgb(55, 166, 154) |
| HSL | hsl(174, 50%, 43%) |
| OKLCH | oklch(66% 0.1 184.8) |
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 #37A69A | 2.96:1 | Fails | Lc -61.2 | Content text, not long reading |
| Black text on #37A69A | 7.08:1 | AAA | Lc 48.2 | Large or bold text, headings |
| #37A69A text on white | 2.96:1 | Fails | Lc 55.9 | Large or bold text, headings |
| #37A69A text on black | 7.08:1 | AAA | Lc -45.9 | 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 500.
-
Step 50
50
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E0EDEB
oklch(93.6% 0.014 185.9)
-
Step 200
200
#C6DFDB
oklch(88.4% 0.027 185.1)
-
Step 300
300
#9ECBC4
oklch(80.8% 0.048 184.6)
-
Step 400
400
#64B1A7
oklch(70.8% 0.078 184.9)
-
Step 500
500 (this color)
#37A69A
oklch(66% 0.1 184.8)
-
Step 600
600
#00867B
oklch(55.7% 0.098 184.8)
-
Step 700
700
#007067
oklch(49% 0.086 185.2)
-
Step 800
800
#005C54
oklch(42.7% 0.075 184.7)
-
Step 900
900
#034D46
oklch(37.8% 0.066 184.3)
-
Step 950
950
#082D29
oklch(27% 0.041 184.8)
#37A69A 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) | #9E9D9A | 0.107 |
| Deuteranopia (no green cones) | #8E919B | 0.101 |
| Tritanopia (no blue cones) | #00AAA2 | 0.018 |
| Achromatopsia (no color) | #969696 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37A69A
#37A69A
oklch(66% 0.1 184.8)
- #C6778A
#C6778A
oklch(66% 0.101 4.7)
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 #37A69A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Persian Green #2A9D8F ΔE 0.030
- Dull Teal #5F9E8F ΔE 0.034
- Light Sea Green #20B2AA ΔE 0.035
- Sea #3C9992 ΔE 0.037
- Grey Teal #5E9B8A ΔE 0.039
- Cadet Blue #5F9EA0 ΔE 0.040
- Blue Green #0F9B8E ΔE 0.040
- Greeny Blue #42B395 ΔE 0.043
Use #37A69A 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.