#37A040
Closest named color: Mid Green (#50A747). oklch(62.4% 0.165 144.6), rgb(55, 160, 64).
Aa
Black text reads best on this color (6.26:1).
About this color
#37A040 is a medium-light, vivid green. In OKLCH its lightness is 62%, its chroma 0.165 and its hue 145°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mid Green (#50A747), ΔE 0.030 away. Black text reads best on it, at 6.26:1.
| Hue family | Greens |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.165) |
| Temperature | in between |
| Nearest name | Mid Green (#50A747) |
| Black text | 6.26:1 |
| White text | 3.35:1 |
Values
| HEX | #37A040 |
| RGB | rgb(55, 160, 64) |
| HSL | hsl(125, 49%, 42%) |
| OKLCH | oklch(62.4% 0.165 144.6) |
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 #37A040 | 3.35:1 | AA large text | Lc -66.0 | Content text, not long reading |
| Black text on #37A040 | 6.26:1 | AA | Lc 43.5 | Non-text elements, placeholder text |
| #37A040 text on white | 3.35:1 | AA large text | Lc 60.6 | Content text, not long reading |
| #37A040 text on black | 6.26:1 | AA | Lc -41.1 | 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
#F1F7F1
oklch(97% 0.01 145.5)
-
Step 100
100
#E1EEE0
oklch(93.6% 0.023 143.4)
-
Step 200
200
#C8E1C7
oklch(88.4% 0.044 144.2)
-
Step 300
300
#A1CFA0
oklch(80.9% 0.081 144.3)
-
Step 400
400
#6AB66C
oklch(70.8% 0.13 144.6)
-
Step 500
500 (this color)
#37A040
oklch(62.4% 0.165 144.6)
-
Step 600
600
#008C21
oklch(55.6% 0.177 144.7)
-
Step 700
700
#00761A
oklch(49.2% 0.156 144.6)
-
Step 800
800
#006113
oklch(42.8% 0.136 144.5)
-
Step 900
900
#104F17
oklch(37.6% 0.107 144.6)
-
Step 950
950
#0C2F0F
oklch(27.1% 0.069 144.8)
#37A040 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) | #A39236 | 0.123 |
| Deuteranopia (no green cones) | #968948 | 0.123 |
| Tritanopia (no blue cones) | #1C9C8B | 0.102 |
| Achromatopsia (no color) | #8C8C8C | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37A040
#37A040
oklch(62.4% 0.165 144.6)
- #B75FBE
#B75FBE
oklch(62.4% 0.165 324.5)
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 #37A040, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Green #50A747 ΔE 0.030
- Grass Green #3F9B0B ΔE 0.032
- Grassy Green #419C03 ΔE 0.033
- Medium Green #39AD48 ΔE 0.038
- Kelly Green #02AB2E ΔE 0.042
- Muted Green #5FA052 ΔE 0.042
- Irish Green #019529 ΔE 0.045
- Kelley Green #009337 ΔE 0.047
Use #37A040 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.