#37BF33
Closest named color: Shamrock Green (#02C14D). oklch(70.6% 0.212 142.6), rgb(55, 191, 51).
Aa
Black text reads best on this color (8.66:1).
About this color
#37BF33 is a medium-light, vivid green. In OKLCH its lightness is 71%, its chroma 0.212 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock Green (#02C14D), ΔE 0.020 away. Black text reads best on it, at 8.66:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.212) |
| Temperature | in between |
| Nearest name | Shamrock Green (#02C14D) |
| Black text | 8.66:1 |
| White text | 2.42:1 |
Values
| HEX | #37BF33 |
| RGB | rgb(55, 191, 51) |
| HSL | hsl(118, 58%, 47%) |
| OKLCH | oklch(70.6% 0.212 142.6) |
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 #37BF33 | 2.42:1 | Fails | Lc -52.2 | Large or bold text, headings |
| Black text on #37BF33 | 8.66:1 | AAA | Lc 56.8 | Large or bold text, headings |
| #37BF33 text on white | 2.42:1 | Fails | Lc 47.2 | Large or bold text, headings |
| #37BF33 text on black | 8.66:1 | AAA | Lc -54.8 | 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
#EFF9EE
oklch(97.2% 0.018 142.8)
-
Step 100
100
#DCF1DA
oklch(93.6% 0.038 142.8)
-
Step 200
200
#BEE6BA
oklch(88.5% 0.073 142.5)
-
Step 300
300
#8CD687
oklch(80.8% 0.131 142.8)
-
Step 400
400 (this color)
#37BF33
oklch(70.6% 0.212 142.6)
-
Step 500
500
#00A703
oklch(63.1% 0.214 142.6)
-
Step 600
600
#008C02
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
#005101
oklch(37.7% 0.128 142.6)
-
Step 950
950
#003100
oklch(27.1% 0.092 142.5)
#37BF33 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) | #C3AD19 | 0.149 |
| Deuteranopia (no green cones) | #B4A242 | 0.151 |
| Tritanopia (no blue cones) | #07B9A4 | 0.137 |
| Achromatopsia (no color) | #A6A6A6 | 0.212 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37BF33
#37BF33
oklch(70.6% 0.212 142.6)
- #DC69EC
#DC69EC
oklch(70.6% 0.213 322.6)
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 #37BF33, closest first.
No curated palette has a color within ΔE 0.04 of #37BF33.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock Green #02C14D ΔE 0.020
- Frog Green #58BC08 ΔE 0.022
- Leafy Green #51B73B ΔE 0.028
- Lime Green #32CD32 ΔE 0.040
- Shamrock #01B44C ΔE 0.045
- Dark Lime Green #7EBD01 ΔE 0.053
- Algae Green #21C36F ΔE 0.054
- Grass #5CAC2D ΔE 0.055
Use #37BF33 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.