#37A528
Closest named color: Kelly Green (#02AB2E). oklch(63.5% 0.188 141.4), rgb(55, 165, 40).
Aa
Black text reads best on this color (6.57:1).
About this color
#37A528 is a medium-light, vivid green. In OKLCH its lightness is 64%, its chroma 0.188 and its hue 141°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelly Green (#02AB2E), ΔE 0.020 away. Black text reads best on it, at 6.57:1.
| Hue family | Greens |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.188) |
| Temperature | in between |
| Nearest name | Kelly Green (#02AB2E) |
| Black text | 6.57:1 |
| White text | 3.19:1 |
Values
| HEX | #37A528 |
| RGB | rgb(55, 165, 40) |
| HSL | hsl(113, 61%, 40%) |
| OKLCH | oklch(63.5% 0.188 141.4) |
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 #37A528 | 3.19:1 | AA large text | Lc -64.1 | Content text, not long reading |
| Black text on #37A528 | 6.57:1 | AA | Lc 45.4 | Large or bold text, headings |
| #37A528 text on white | 3.19:1 | AA large text | Lc 58.7 | Large or bold text, headings |
| #37A528 text on black | 6.57:1 | AA | Lc -43.1 | 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
#F1F8F0
oklch(97.2% 0.013 141.8)
-
Step 100
100
#E0EFDE
oklch(93.6% 0.028 142)
-
Step 200
200
#C7E2C3
oklch(88.5% 0.051 141.6)
-
Step 300
300
#9FD098
oklch(80.9% 0.093 141.5)
-
Step 400
400
#68B75D
oklch(70.7% 0.147 141.3)
-
Step 500
500 (this color)
#37A528
oklch(63.5% 0.188 141.4)
-
Step 600
600
#188C00
oklch(55.7% 0.185 141.5)
-
Step 700
700
#137500
oklch(49% 0.163 141.4)
-
Step 800
800
#0E6000
oklch(42.6% 0.141 141.4)
-
Step 900
900
#0C5002
oklch(37.6% 0.123 141.4)
-
Step 950
950
#0B2F07
oklch(26.9% 0.077 141.6)
#37A528 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) | #A9950D | 0.130 |
| Deuteranopia (no green cones) | #9C8D36 | 0.130 |
| Tritanopia (no blue cones) | #21A08D | 0.123 |
| Achromatopsia (no color) | #909090 | 0.189 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37A528
#37A528
oklch(63.5% 0.188 141.4)
- #BD5CCE
#BD5CCE
oklch(63.5% 0.189 321.5)
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 #37A528, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelly Green #02AB2E ΔE 0.020
- Grassy Green #419C03 ΔE 0.026
- Grass Green #3F9B0B ΔE 0.028
- Medium Green #39AD48 ΔE 0.031
- Leaf Green #5CA904 ΔE 0.033
- Mid Green #50A747 ΔE 0.035
- Grass #5CAC2D ΔE 0.038
- Shamrock #01B44C ΔE 0.044
Use #37A528 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.