#33B228
Closest named color: Shamrock (#01B44C). oklch(67% 0.204 142), rgb(51, 178, 40).
Aa
Black text reads best on this color (7.53:1).
About this color
#33B228 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.204 and its hue 142°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock (#01B44C), ΔE 0.027 away. Black text reads best on it, at 7.53:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.204) |
| Temperature | in between |
| Nearest name | Shamrock (#01B44C) |
| Black text | 7.53:1 |
| White text | 2.78:1 |
Values
| HEX | #33B228 |
| RGB | rgb(51, 178, 40) |
| HSL | hsl(115, 63%, 43%) |
| OKLCH | oklch(67% 0.204 142) |
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 #33B228 | 2.78:1 | Fails | Lc -58.4 | Large or bold text, headings |
| Black text on #33B228 | 7.53:1 | AAA | Lc 50.9 | Large or bold text, headings |
| #33B228 text on white | 2.78:1 | Fails | Lc 53.1 | Large or bold text, headings |
| #33B228 text on black | 7.53:1 | 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
#DDF1DA
oklch(93.7% 0.037 141.6)
-
Step 200
200
#BFE6BA
oklch(88.6% 0.072 141.9)
-
Step 300
300
#90D688
oklch(81% 0.128 141.9)
-
Step 400
400 (this color)
#33B228
oklch(67% 0.204 142)
-
Step 500
500
#14A600
oklch(63% 0.212 142)
-
Step 600
600
#0F8C00
oklch(55.6% 0.187 142)
-
Step 700
700
#0A7600
oklch(49.1% 0.165 142)
-
Step 800
800
#076100
oklch(42.8% 0.144 142)
-
Step 900
900
#055100
oklch(37.8% 0.127 142)
-
Step 950
950
#023000
oklch(26.9% 0.09 141.9)
#33B228 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) | #B6A103 | 0.142 |
| Deuteranopia (no green cones) | #A89738 | 0.143 |
| Tritanopia (no blue cones) | #0CAC98 | 0.134 |
| Achromatopsia (no color) | #9B9B9B | 0.205 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33B228
#33B228
oklch(67% 0.204 142)
- #CD61DE
#CD61DE
oklch(67% 0.204 322)
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 #33B228, closest first.
No curated palette has a color within ΔE 0.04 of #33B228.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock #01B44C ΔE 0.027
- Kelly Green #02AB2E ΔE 0.027
- Leafy Green #51B73B ΔE 0.030
- Leaf Green #5CA904 ΔE 0.032
- Grass #5CAC2D ΔE 0.033
- Medium Green #39AD48 ΔE 0.033
- Frog Green #58BC08 ΔE 0.042
- Shamrock Green #02C14D ΔE 0.043
Use #33B228 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.