#37A581
Closest named color: Jade (#1FA774). oklch(65% 0.113 167.4), rgb(55, 165, 129).
Aa
Black text reads best on this color (6.86:1).
About this color
#37A581 is a medium-light, moderately saturated green. In OKLCH its lightness is 65%, its chroma 0.113 and its hue 167°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Jade (#1FA774), ΔE 0.025 away. Black text reads best on it, at 6.86:1.
| Hue family | Greens |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.113) |
| Temperature | in between |
| Nearest name | Jade (#1FA774) |
| Black text | 6.86:1 |
| White text | 3.06:1 |
Values
| HEX | #37A581 |
| RGB | rgb(55, 165, 129) |
| HSL | hsl(160, 50%, 43%) |
| OKLCH | oklch(65% 0.113 167.4) |
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 #37A581 | 3.06:1 | AA large text | Lc -62.5 | Content text, not long reading |
| Black text on #37A581 | 6.86:1 | AA | Lc 46.9 | Large or bold text, headings |
| #37A581 text on white | 3.06:1 | AA large text | Lc 57.1 | Large or bold text, headings |
| #37A581 text on black | 6.86:1 | AA | Lc -44.6 | 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
#F1F7F4
oklch(97.1% 0.007 164.9)
-
Step 100
100
#E0EDE8
oklch(93.5% 0.015 171)
-
Step 200
200
#C7E0D5
oklch(88.5% 0.03 167.4)
-
Step 300
300
#9FCDB9
oklch(81% 0.056 166.6)
-
Step 400
400
#66B395
oklch(70.8% 0.089 166.8)
-
Step 500
500 (this color)
#37A581
oklch(65% 0.113 167.4)
-
Step 600
600
#008866
oklch(55.6% 0.113 167.6)
-
Step 700
700
#007255
oklch(49% 0.1 167.6)
-
Step 800
800
#005E45
oklch(42.8% 0.088 167.1)
-
Step 900
900
#074E39
oklch(37.8% 0.074 166.7)
-
Step 950
950
#092E22
oklch(27.1% 0.047 167.5)
#37A581 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) | #A19A7F | 0.113 |
| Deuteranopia (no green cones) | #928F83 | 0.109 |
| Tritanopia (no blue cones) | #00A69B | 0.038 |
| Achromatopsia (no color) | #939393 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37A581
#37A581
oklch(65% 0.113 167.4)
- #C1719C
#C1719C
oklch(64.9% 0.114 347.3)
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 #37A581, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jade #1FA774 ΔE 0.025
- Ocean Green #3D9973 ΔE 0.035
- Persian Green #2A9D8F ΔE 0.037
- Dark Seafoam Green #3EAF76 ΔE 0.038
- Bluey Green #2BB179 ΔE 0.041
- Tea #65AB7C ΔE 0.043
- Blue Green #0F9B8E ΔE 0.044
- Seaweed Green #35AD6B ΔE 0.044
Use #37A581 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.