#37BF4B
Closest named color: Shamrock Green (#02C14D). oklch(70.8% 0.195 145.4), rgb(55, 191, 75).
Aa
Black text reads best on this color (8.71:1).
About this color
#37BF4B is a medium-light, vivid green. In OKLCH its lightness is 71%, its chroma 0.195 and its hue 145°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock Green (#02C14D), ΔE 0.013 away. Black text reads best on it, at 8.71:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.195) |
| Temperature | in between |
| Nearest name | Shamrock Green (#02C14D) |
| Black text | 8.71:1 |
| White text | 2.40:1 |
Values
| HEX | #37BF4B |
| RGB | rgb(55, 191, 75) |
| HSL | hsl(129, 55%, 48%) |
| OKLCH | oklch(70.8% 0.195 145.4) |
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 #37BF4B | 2.40:1 | Fails | Lc -51.9 | Large or bold text, headings |
| Black text on #37BF4B | 8.71:1 | AAA | Lc 57.0 | Large or bold text, headings |
| #37BF4B text on white | 2.40:1 | Fails | Lc 47.0 | Large or bold text, headings |
| #37BF4B text on black | 8.71:1 | AAA | Lc -55.1 | 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 400.
-
Step 50
50
#EFF9EF
oklch(97.2% 0.017 145.4)
-
Step 100
100
#DCF1DC
oklch(93.7% 0.036 145.3)
-
Step 200
200
#BEE6BE
oklch(88.6% 0.068 145)
-
Step 300
300
#8CD690
oklch(81% 0.122 145.6)
-
Step 400
400 (this color)
#37BF4B
oklch(70.8% 0.195 145.4)
-
Step 500
500
#00A630
oklch(63.1% 0.196 145.4)
-
Step 600
600
#008C27
oklch(55.7% 0.173 145.4)
-
Step 700
700
#00761F
oklch(49.2% 0.153 145.3)
-
Step 800
800
#006118
oklch(42.8% 0.133 145.4)
-
Step 900
900
#005112
oklch(37.8% 0.118 145.3)
-
Step 950
950
#003008
oklch(26.9% 0.083 145.6)
#37BF4B 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) | #C2AE3E | 0.147 |
| Deuteranopia (no green cones) | #B2A355 | 0.146 |
| Tritanopia (no blue cones) | #00BAA6 | 0.119 |
| Achromatopsia (no color) | #A7A7A7 | 0.196 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37BF4B
#37BF4B
oklch(70.8% 0.195 145.4)
- #DC6FE2
#DC6FE2
oklch(70.9% 0.195 325.4)
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 #37BF4B, closest first.
No curated palette has a color within ΔE 0.04 of #37BF4B.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock Green #02C14D ΔE 0.013
- Leafy Green #51B73B ΔE 0.024
- Frog Green #58BC08 ΔE 0.034
- Algae Green #21C36F ΔE 0.036
- Cool Green #33B864 ΔE 0.038
- Shamrock #01B44C ΔE 0.038
- Dark Mint Green #20C073 ΔE 0.042
- Dark Mint #48C072 ΔE 0.046
Use #37BF4B 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.