#37AF81
Closest named color: Dark Seafoam Green (#3EAF76). oklch(67.6% 0.126 163.4), rgb(55, 175, 129).
Aa
Black text reads best on this color (7.61:1).
About this color
#37AF81 is a medium-light, moderately saturated green. In OKLCH its lightness is 68%, its chroma 0.126 and its hue 163°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Seafoam Green (#3EAF76), ΔE 0.015 away. Black text reads best on it, at 7.61:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.126) |
| Temperature | in between |
| Nearest name | Dark Seafoam Green (#3EAF76) |
| Black text | 7.61:1 |
| White text | 2.75:1 |
Values
| HEX | #37AF81 |
| RGB | rgb(55, 175, 129) |
| HSL | hsl(157, 52%, 45%) |
| OKLCH | oklch(67.6% 0.126 163.4) |
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 #37AF81 | 2.75:1 | Fails | Lc -58.1 | Large or bold text, headings |
| Black text on #37AF81 | 7.61:1 | AAA | Lc 51.1 | Large or bold text, headings |
| #37AF81 text on white | 2.75:1 | Fails | Lc 52.9 | Large or bold text, headings |
| #37AF81 text on black | 7.61:1 | AAA | Lc -48.9 | 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
#EFF8F3
oklch(97.1% 0.012 162.1)
-
Step 100
100
#DDEFE6
oklch(93.6% 0.022 164.5)
-
Step 200
200
#C0E3D1
oklch(88.6% 0.044 163)
-
Step 300
300
#91D1B2
oklch(80.9% 0.079 163)
-
Step 400
400 (this color)
#37AF81
oklch(67.6% 0.126 163.4)
-
Step 500
500
#00A272
oklch(63% 0.135 163.5)
-
Step 600
600
#00885F
oklch(55.5% 0.119 163.5)
-
Step 700
700
#007350
oklch(49.2% 0.105 163.6)
-
Step 800
800
#005E41
oklch(42.7% 0.091 163.9)
-
Step 900
900
#004F35
oklch(37.8% 0.082 162.9)
-
Step 950
950
#002F1E
oklch(27% 0.058 163)
#37AF81 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) | #ACA27E | 0.123 |
| Deuteranopia (no green cones) | #9C9784 | 0.119 |
| Tritanopia (no blue cones) | #00AFA2 | 0.048 |
| Achromatopsia (no color) | #9C9C9C | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37AF81
#37AF81
oklch(67.6% 0.126 163.4)
- #CC76AB
#CC76AB
oklch(67.6% 0.126 343.3)
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 #37AF81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Seafoam Green #3EAF76 ΔE 0.015
- Bluey Green #2BB179 ΔE 0.016
- Dark Seafoam #1FB57A ΔE 0.024
- Medium Sea Green #3CB371 ΔE 0.028
- Seaweed Green #35AD6B ΔE 0.029
- Green Teal #0CB577 ΔE 0.029
- Greeny Blue #42B395 ΔE 0.030
- Jade #1FA774 ΔE 0.030
Use #37AF81 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.