#37AB74
Closest named color: Dark Seafoam Green (#3EAF76). oklch(66.3% 0.132 158.5), rgb(55, 171, 116).
Aa
Black text reads best on this color (7.23:1).
About this color
#37AB74 is a medium-light, moderately saturated green. In OKLCH its lightness is 66%, its chroma 0.132 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Seafoam Green (#3EAF76), ΔE 0.013 away. Black text reads best on it, at 7.23:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.132) |
| Temperature | in between |
| Nearest name | Dark Seafoam Green (#3EAF76) |
| Black text | 7.23:1 |
| White text | 2.90:1 |
Values
| HEX | #37AB74 |
| RGB | rgb(55, 171, 116) |
| HSL | hsl(152, 51%, 44%) |
| OKLCH | oklch(66.3% 0.132 158.5) |
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 #37AB74 | 2.90:1 | Fails | Lc -60.3 | Content text, not long reading |
| Black text on #37AB74 | 7.23:1 | AAA | Lc 49.1 | Large or bold text, headings |
| #37AB74 text on white | 2.90:1 | Fails | Lc 55.0 | Large or bold text, headings |
| #37AB74 text on black | 7.23:1 | AAA | Lc -46.8 | 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
#F1F7F3
oklch(97.1% 0.008 157.1)
-
Step 100
100
#E0EEE5
oklch(93.6% 0.019 157.9)
-
Step 200
200
#C6E1D0
oklch(88.5% 0.037 157.9)
-
Step 300
300
#9ECEB1
oklch(80.9% 0.065 158.1)
-
Step 400
400
#63B488
oklch(70.6% 0.104 158.5)
-
Step 500
500 (this color)
#37AB74
oklch(66.3% 0.132 158.5)
-
Step 600
600
#008956
oklch(55.5% 0.129 158.6)
-
Step 700
700
#007348
oklch(49% 0.113 158.9)
-
Step 800
800
#005F3A
oklch(42.8% 0.099 158.5)
-
Step 900
900
#024F30
oklch(37.7% 0.086 158.7)
-
Step 950
950
#082E1C
oklch(26.9% 0.054 158.5)
#37AB74 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) | #A99E71 | 0.123 |
| Deuteranopia (no green cones) | #9A9378 | 0.120 |
| Tritanopia (no blue cones) | #00AA9D | 0.060 |
| Achromatopsia (no color) | #989898 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37AB74
#37AB74
oklch(66.3% 0.132 158.5)
- #C771AE
#C771AE
oklch(66.3% 0.132 338.9)
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 #37AB74, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Seafoam Green #3EAF76 ΔE 0.013
- Seaweed Green #35AD6B ΔE 0.015
- Bluey Green #2BB179 ΔE 0.017
- Jade #1FA774 ΔE 0.017
- Jade Green #2BAF6A ΔE 0.021
- Algae #54AC68 ΔE 0.024
- Medium Sea Green #3CB371 ΔE 0.026
- Dark Seafoam #1FB57A ΔE 0.028
Use #37AB74 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.