#37A371
Closest named color: Jade (#1FA774). oklch(64.1% 0.124 159.4), rgb(55, 163, 113).
Aa
Black text reads best on this color (6.63:1).
About this color
#37A371 is a medium-light, moderately saturated green. In OKLCH its lightness is 64%, its chroma 0.124 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Jade (#1FA774), ΔE 0.013 away. Black text reads best on it, at 6.63:1.
| Hue family | Greens |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.124) |
| Temperature | in between |
| Nearest name | Jade (#1FA774) |
| Black text | 6.63:1 |
| White text | 3.16:1 |
Values
| HEX | #37A371 |
| RGB | rgb(55, 163, 113) |
| HSL | hsl(152, 50%, 43%) |
| OKLCH | oklch(64.1% 0.124 159.4) |
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 #37A371 | 3.16:1 | AA large text | Lc -63.8 | Content text, not long reading |
| Black text on #37A371 | 6.63:1 | AA | Lc 45.6 | Large or bold text, headings |
| #37A371 text on white | 3.16:1 | AA large text | Lc 58.4 | Large or bold text, headings |
| #37A371 text on black | 6.63:1 | AA | Lc -43.3 | Non-text elements, placeholder text |
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
#E1EEE6
oklch(93.7% 0.017 159.1)
-
Step 200
200
#C7E0D1
oklch(88.4% 0.033 159.3)
-
Step 300
300
#9FCDB3
oklch(80.8% 0.061 159.9)
-
Step 400
400
#67B38B
oklch(70.6% 0.097 159.6)
-
Step 500
500 (this color)
#37A371
oklch(64.1% 0.124 159.4)
-
Step 600
600
#008958
oklch(55.6% 0.127 159.5)
-
Step 700
700
#007349
oklch(49% 0.112 159.4)
-
Step 800
800
#005F3B
oklch(42.8% 0.098 159.1)
-
Step 900
900
#0A4E32
oklch(37.6% 0.08 159.8)
-
Step 950
950
#0A2E1D
oklch(27% 0.052 159.1)
#37A371 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) | #A1976E | 0.116 |
| Deuteranopia (no green cones) | #938D74 | 0.113 |
| Tritanopia (no blue cones) | #00A296 | 0.055 |
| Achromatopsia (no color) | #919191 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37A371
#37A371
oklch(64.1% 0.124 159.4)
- #BD6DA5
#BD6DA5
oklch(64.1% 0.124 339.2)
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 #37A371, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jade #1FA774 ΔE 0.013
- Ocean Green #3D9973 ΔE 0.031
- Seaweed Green #35AD6B ΔE 0.033
- Dark Seafoam Green #3EAF76 ΔE 0.036
- Bluey Green #2BB179 ΔE 0.039
- Algae #54AC68 ΔE 0.040
- Jade Green #2BAF6A ΔE 0.040
- Muted Green #5FA052 ΔE 0.042
Use #37A371 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.