#37B33A
Closest named color: Shamrock (#01B44C). oklch(67.5% 0.193 143.4), rgb(55, 179, 58).
Aa
Black text reads best on this color (7.67:1).
About this color
#37B33A is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.193 and its hue 143°. 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 7.67:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.193) |
| Temperature | in between |
| Nearest name | Shamrock (#01B44C) |
| Black text | 7.67:1 |
| White text | 2.73:1 |
Values
| HEX | #37B33A |
| RGB | rgb(55, 179, 58) |
| HSL | hsl(121, 53%, 46%) |
| OKLCH | oklch(67.5% 0.193 143.4) |
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 #37B33A | 2.73:1 | Fails | Lc -57.7 | Large or bold text, headings |
| Black text on #37B33A | 7.67:1 | AAA | Lc 51.6 | Large or bold text, headings |
| #37B33A text on white | 2.73:1 | Fails | Lc 52.5 | Large or bold text, headings |
| #37B33A text on black | 7.67:1 | AAA | Lc -49.4 | 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
#C0E5BD
oklch(88.5% 0.067 143)
-
Step 300
300
#90D58D
oklch(80.9% 0.121 143.4)
-
Step 400
400 (this color)
#37B33A
oklch(67.5% 0.193 143.4)
-
Step 500
500
#00A718
oklch(63.2% 0.209 143.4)
-
Step 600
600
#008C12
oklch(55.5% 0.184 143.3)
-
Step 700
700
#00760E
oklch(49.1% 0.162 143.4)
-
Step 800
800
#006109
oklch(42.7% 0.141 143.3)
-
Step 900
900
#005106
oklch(37.7% 0.125 143.3)
-
Step 950
950
#003102
oklch(27.2% 0.09 143.2)
#37B33A 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) | #B7A22A | 0.140 |
| Deuteranopia (no green cones) | #A89845 | 0.140 |
| Tritanopia (no blue cones) | #11AE9A | 0.122 |
| Achromatopsia (no color) | #9C9C9C | 0.194 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37B33A
#37B33A
oklch(67.5% 0.193 143.4)
- #CE66DA
#CE66DA
oklch(67.6% 0.194 323.4)
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 #37B33A, closest first.
No curated palette has a color within ΔE 0.04 of #37B33A.
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 0.022
- Medium Green #39AD48 ΔE 0.024
- Grass #5CAC2D ΔE 0.028
- Kelly Green #02AB2E ΔE 0.032
- Leaf Green #5CA904 ΔE 0.035
- Shamrock Green #02C14D ΔE 0.038
- Cool Green #33B864 ΔE 0.041
Use #37B33A 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.