#37A819
Closest named color: Kelly Green (#02AB2E). oklch(64.3% 0.199 140.4), rgb(55, 168, 25).
Aa
Black text reads best on this color (6.77:1).
About this color
#37A819 is a medium-light, vivid green. In OKLCH its lightness is 64%, its chroma 0.199 and its hue 140°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelly Green (#02AB2E), ΔE 0.016 away. Black text reads best on it, at 6.77:1.
| Hue family | Greens |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.199) |
| Temperature | in between |
| Nearest name | Kelly Green (#02AB2E) |
| Black text | 6.77:1 |
| White text | 3.09:1 |
Values
| HEX | #37A819 |
| RGB | rgb(55, 168, 25) |
| HSL | hsl(107, 74%, 38%) |
| OKLCH | oklch(64.3% 0.199 140.4) |
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 #37A819 | 3.09:1 | AA large text | Lc -62.8 | Content text, not long reading |
| Black text on #37A819 | 6.77:1 | AA | Lc 46.6 | Large or bold text, headings |
| #37A819 text on white | 3.09:1 | AA large text | Lc 57.4 | Large or bold text, headings |
| #37A819 text on black | 6.77:1 | AA | Lc -44.3 | 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
#F1F8F0
oklch(97.2% 0.013 141.8)
-
Step 100
100
#E0EFDD
oklch(93.6% 0.029 140.5)
-
Step 200
200
#C7E3C1
oklch(88.6% 0.055 140.1)
-
Step 300
300
#9FD195
oklch(81% 0.098 140.4)
-
Step 400
400
#66B856
oklch(70.8% 0.156 140.5)
-
Step 500
500 (this color)
#37A819
oklch(64.3% 0.199 140.4)
-
Step 600
600
#248B00
oklch(55.7% 0.181 140.5)
-
Step 700
700
#1D7500
oklch(49.2% 0.16 140.4)
-
Step 800
800
#166000
oklch(42.8% 0.139 140.4)
-
Step 900
900
#115000
oklch(37.7% 0.122 140.4)
-
Step 950
950
#0A2F03
oklch(26.9% 0.082 140.4)
#37A819 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) | #AD9800 | 0.135 |
| Deuteranopia (no green cones) | #9F8F2D | 0.134 |
| Tritanopia (no blue cones) | #22A28F | 0.134 |
| Achromatopsia (no color) | #929292 | 0.199 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37A819
#37A819
oklch(64.3% 0.199 140.4)
- #C05BD5
#C05BD5
oklch(64.2% 0.198 320.5)
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 #37A819, closest first.
No curated palette has a color within ΔE 0.04 of #37A819.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelly Green #02AB2E ΔE 0.016
- Leaf Green #5CA904 ΔE 0.028
- Grassy Green #419C03 ΔE 0.033
- Medium Green #39AD48 ΔE 0.034
- Grass #5CAC2D ΔE 0.036
- Grass Green #3F9B0B ΔE 0.037
- Shamrock #01B44C ΔE 0.041
- Mid Green #50A747 ΔE 0.042
Use #37A819 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.