#37A433
Closest named color: Kelly Green (#02AB2E). oklch(63.4% 0.18 142.6), rgb(55, 164, 51).
Aa
Black text reads best on this color (6.52:1).
About this color
#37A433 is a medium-light, vivid green. In OKLCH its lightness is 63%, its chroma 0.180 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelly Green (#02AB2E), ΔE 0.026 away. Black text reads best on it, at 6.52:1.
| Hue family | Greens |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.180) |
| Temperature | in between |
| Nearest name | Kelly Green (#02AB2E) |
| Black text | 6.52:1 |
| White text | 3.22:1 |
Values
| HEX | #37A433 |
| RGB | rgb(55, 164, 51) |
| HSL | hsl(118, 53%, 42%) |
| OKLCH | oklch(63.4% 0.18 142.6) |
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 #37A433 | 3.22:1 | AA large text | Lc -64.4 | Content text, not long reading |
| Black text on #37A433 | 6.52:1 | AA | Lc 45.1 | Large or bold text, headings |
| #37A433 text on white | 3.22:1 | AA large text | Lc 59.0 | Large or bold text, headings |
| #37A433 text on black | 6.52:1 | AA | Lc -42.7 | 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
#E1EFDF
oklch(93.7% 0.026 141.8)
-
Step 200
200
#C7E2C4
oklch(88.5% 0.05 142.4)
-
Step 300
300
#A0D09B
oklch(81% 0.089 142.3)
-
Step 400
400
#68B663
oklch(70.6% 0.14 142.7)
-
Step 500
500 (this color)
#37A433
oklch(63.4% 0.18 142.6)
-
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
#0D500C
oklch(37.7% 0.117 142.7)
-
Step 950
950
#0B2F0A
oklch(27% 0.074 142.8)
#37A433 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) | #A89523 | 0.128 |
| Deuteranopia (no green cones) | #9B8C3E | 0.129 |
| Tritanopia (no blue cones) | #1F9F8D | 0.116 |
| Achromatopsia (no color) | #8F8F8F | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37A433
#37A433
oklch(63.4% 0.18 142.6)
- #BC5EC9
#BC5EC9
oklch(63.4% 0.18 322.6)
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 #37A433, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelly Green #02AB2E ΔE 0.026
- Grassy Green #419C03 ΔE 0.027
- Grass Green #3F9B0B ΔE 0.028
- Medium Green #39AD48 ΔE 0.029
- Mid Green #50A747 ΔE 0.030
- Leaf Green #5CA904 ΔE 0.038
- Grass #5CAC2D ΔE 0.040
- Shamrock #01B44C ΔE 0.044
Use #37A433 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.