#33B21F
Closest named color: Kelly Green (#02AB2E). oklch(66.9% 0.208 141.4), rgb(51, 178, 31).
Aa
Black text reads best on this color (7.52:1).
About this color
#33B21F is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.208 and its hue 141°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelly Green (#02AB2E), ΔE 0.029 away. Black text reads best on it, at 7.52:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.208) |
| Temperature | in between |
| Nearest name | Kelly Green (#02AB2E) |
| Black text | 7.52:1 |
| White text | 2.78:1 |
Values
| HEX | #33B21F |
| RGB | rgb(51, 178, 31) |
| HSL | hsl(112, 70%, 41%) |
| OKLCH | oklch(66.9% 0.208 141.4) |
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 #33B21F | 2.78:1 | Fails | Lc -58.4 | Large or bold text, headings |
| Black text on #33B21F | 7.52:1 | AAA | Lc 50.9 | Large or bold text, headings |
| #33B21F text on white | 2.78:1 | Fails | Lc 53.2 | Large or bold text, headings |
| #33B21F text on black | 7.52:1 | AAA | Lc -48.7 | 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
#DDF1D9
oklch(93.7% 0.038 140.5)
-
Step 200
200
#BFE6B9
oklch(88.5% 0.073 141.4)
-
Step 300
300
#90D686
oklch(81% 0.13 141.4)
-
Step 400
400 (this color)
#33B21F
oklch(66.9% 0.208 141.4)
-
Step 500
500
#20A600
oklch(63.1% 0.209 141.4)
-
Step 600
600
#198C00
oklch(55.7% 0.185 141.4)
-
Step 700
700
#147500
oklch(49% 0.162 141.3)
-
Step 800
800
#0E6000
oklch(42.6% 0.141 141.4)
-
Step 900
900
#0A5000
oklch(37.6% 0.125 141.4)
-
Step 950
950
#043000
oklch(26.9% 0.089 141.3)
#33B21F 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) | #B7A100 | 0.144 |
| Deuteranopia (no green cones) | #A89732 | 0.143 |
| Tritanopia (no blue cones) | #0FAC98 | 0.138 |
| Achromatopsia (no color) | #9B9B9B | 0.209 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33B21F
#33B21F
oklch(66.9% 0.208 141.4)
- #CD5FE0
#CD5FE0
oklch(66.9% 0.209 321.5)
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 #33B21F, closest first.
No curated palette has a color within ΔE 0.04 of #33B21F.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelly Green #02AB2E ΔE 0.029
- Shamrock #01B44C ΔE 0.031
- Leafy Green #51B73B ΔE 0.032
- Leaf Green #5CA904 ΔE 0.033
- Grass #5CAC2D ΔE 0.035
- Medium Green #39AD48 ΔE 0.037
- Frog Green #58BC08 ΔE 0.041
- Shamrock Green #02C14D ΔE 0.045
Use #33B21F 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.