#37B43D
Closest named color: Shamrock (#01B44C). oklch(67.8% 0.192 143.7), rgb(55, 180, 61).
Aa
Black text reads best on this color (7.75:1).
About this color
#37B43D is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.192 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock (#01B44C), ΔE 0.018 away. Black text reads best on it, at 7.75:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.192) |
| Temperature | in between |
| Nearest name | Shamrock (#01B44C) |
| Black text | 7.75:1 |
| White text | 2.70:1 |
Values
| HEX | #37B43D |
| RGB | rgb(55, 180, 61) |
| HSL | hsl(123, 53%, 46%) |
| OKLCH | oklch(67.8% 0.192 143.7) |
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 #37B43D | 2.70:1 | Fails | Lc -57.2 | Large or bold text, headings |
| Black text on #37B43D | 7.75:1 | AAA | Lc 52.0 | Large or bold text, headings |
| #37B43D text on white | 2.70:1 | Fails | Lc 52.0 | Large or bold text, headings |
| #37B43D text on black | 7.75:1 | AAA | Lc -49.9 | 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 400.
-
Step 50
50
#EFF8EF
oklch(97% 0.015 145.5)
-
Step 100
100
#DDF0DB
oklch(93.5% 0.034 142.6)
-
Step 200
200
#BFE5BE
oklch(88.4% 0.066 144.3)
-
Step 300
300
#90D58E
oklch(80.9% 0.12 143.7)
-
Step 400
400 (this color)
#37B43D
oklch(67.8% 0.192 143.7)
-
Step 500
500
#00A71E
oklch(63.2% 0.207 143.7)
-
Step 600
600
#008C17
oklch(55.5% 0.182 143.7)
-
Step 700
700
#007612
oklch(49.1% 0.161 143.7)
-
Step 800
800
#00610D
oklch(42.7% 0.14 143.7)
-
Step 900
900
#005109
oklch(37.7% 0.123 143.7)
-
Step 950
950
#003003
oklch(26.8% 0.088 143.6)
#37B43D 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) | #B8A32E | 0.141 |
| Deuteranopia (no green cones) | #A99948 | 0.141 |
| Tritanopia (no blue cones) | #0FAF9B | 0.120 |
| Achromatopsia (no color) | #9D9D9D | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37B43D
#37B43D
oklch(67.8% 0.192 143.7)
- #CF67DA
#CF67DA
oklch(67.8% 0.193 323.7)
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 #37B43D, closest first.
No curated palette has a color within ΔE 0.04 of #37B43D.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock #01B44C ΔE 0.018
- Leafy Green #51B73B ΔE 0.020
- Medium Green #39AD48 ΔE 0.025
- Grass #5CAC2D ΔE 0.029
- Kelly Green #02AB2E ΔE 0.035
- Shamrock Green #02C14D ΔE 0.035
- Leaf Green #5CA904 ΔE 0.037
- Cool Green #33B864 ΔE 0.038
Use #37B43D 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.