#37A233
Closest named color: Grassy Green (#419C03). oklch(62.8% 0.178 142.6), rgb(55, 162, 51).
Aa
Black text reads best on this color (6.37:1).
About this color
#37A233 is a medium-light, vivid green. In OKLCH its lightness is 63%, its chroma 0.178 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grassy Green (#419C03), ΔE 0.024 away. Black text reads best on it, at 6.37:1.
| Hue family | Greens |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.178) |
| Temperature | in between |
| Nearest name | Grassy Green (#419C03) |
| Black text | 6.37:1 |
| White text | 3.29:1 |
Values
| HEX | #37A233 |
| RGB | rgb(55, 162, 51) |
| HSL | hsl(118, 52%, 42%) |
| OKLCH | oklch(62.8% 0.178 142.6) |
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 #37A233 | 3.29:1 | AA large text | Lc -65.3 | Content text, not long reading |
| Black text on #37A233 | 6.37:1 | AA | Lc 44.2 | Non-text elements, placeholder text |
| #37A233 text on white | 3.29:1 | AA large text | Lc 59.9 | Large or bold text, headings |
| #37A233 text on black | 6.37:1 | AA | Lc -41.9 | 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
#E1EEDF
oklch(93.5% 0.024 141.5)
-
Step 200
200
#C7E2C5
oklch(88.5% 0.049 143.3)
-
Step 300
300
#A0CF9C
oklch(80.8% 0.086 142.8)
-
Step 400
400
#69B664
oklch(70.6% 0.139 142.7)
-
Step 500
500 (this color)
#37A233
oklch(62.8% 0.178 142.6)
-
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
#0F500D
oklch(37.7% 0.116 142.5)
-
Step 950
950
#0C2F0A
oklch(27% 0.074 142.4)
#37A233 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) | #A69324 | 0.127 |
| Deuteranopia (no green cones) | #998A3D | 0.127 |
| Tritanopia (no blue cones) | #209D8B | 0.114 |
| Achromatopsia (no color) | #8E8E8E | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37A233
#37A233
oklch(62.8% 0.178 142.6)
- #B95DC6
#B95DC6
oklch(62.8% 0.177 322.5)
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 #37A233, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grassy Green #419C03 ΔE 0.024
- Grass Green #3F9B0B ΔE 0.024
- Kelly Green #02AB2E ΔE 0.030
- Mid Green #50A747 ΔE 0.032
- Medium Green #39AD48 ΔE 0.034
- Leaf Green #5CA904 ΔE 0.042
- Grass #5CAC2D ΔE 0.044
- Irish Green #019529 ΔE 0.047
Use #37A233 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.