#37AE33
Closest named color: Medium Green (#39AD48). oklch(66.1% 0.192 142.6), rgb(55, 174, 51).
Aa
Black text reads best on this color (7.26:1).
About this color
#37AE33 is a medium-light, vivid green. In OKLCH its lightness is 66%, its chroma 0.192 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Green (#39AD48), ΔE 0.020 away. Black text reads best on it, at 7.26:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.192) |
| Temperature | in between |
| Nearest name | Medium Green (#39AD48) |
| Black text | 7.26:1 |
| White text | 2.89:1 |
Values
| HEX | #37AE33 |
| RGB | rgb(55, 174, 51) |
| HSL | hsl(118, 55%, 44%) |
| OKLCH | oklch(66.1% 0.192 142.6) |
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 #37AE33 | 2.89:1 | Fails | Lc -60.0 | Content text, not long reading |
| Black text on #37AE33 | 7.26:1 | AAA | Lc 49.3 | Large or bold text, headings |
| #37AE33 text on white | 2.89:1 | Fails | Lc 54.7 | Large or bold text, headings |
| #37AE33 text on black | 7.26:1 | AAA | Lc -47.1 | 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 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
#C6E3C3
oklch(88.6% 0.053 142.6)
-
Step 300
300
#9DD199
oklch(81% 0.094 142.9)
-
Step 400
400
#63B85E
oklch(70.8% 0.151 142.7)
-
Step 500
500 (this color)
#37AE33
oklch(66.1% 0.192 142.6)
-
Step 600
600
#008C03
oklch(55.5% 0.188 142.6)
-
Step 700
700
#007602
oklch(49% 0.166 142.6)
-
Step 800
800
#006101
oklch(42.7% 0.145 142.6)
-
Step 900
900
#035103
oklch(37.8% 0.126 142.6)
-
Step 950
950
#082F07
oklch(26.8% 0.079 142.6)
#37AE33 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) | #B29E20 | 0.136 |
| Deuteranopia (no green cones) | #A4943F | 0.137 |
| Tritanopia (no blue cones) | #19A996 | 0.124 |
| Achromatopsia (no color) | #989898 | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37AE33
#37AE33
oklch(66.1% 0.192 142.6)
- #C862D6
#C862D6
oklch(66.1% 0.193 322.7)
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 #37AE33, closest first.
No curated palette has a color within ΔE 0.04 of #37AE33.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Green #39AD48 ΔE 0.020
- Kelly Green #02AB2E ΔE 0.021
- Shamrock #01B44C ΔE 0.023
- Grass #5CAC2D ΔE 0.026
- Leaf Green #5CA904 ΔE 0.028
- Leafy Green #51B73B ΔE 0.034
- Mid Green #50A747 ΔE 0.036
- Dark Pastel Green #56AE57 ΔE 0.045
Use #37AE33 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.