#21B35B
Closest named color: Cool Green (#33B864). oklch(67.4% 0.173 150.8), rgb(33, 179, 91).
Aa
Black text reads best on this color (7.66:1).
About this color
#21B35B is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.173 and its hue 151°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Cool Green (#33B864), ΔE 0.019 away. Black text reads best on it, at 7.66:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.173) |
| Temperature | in between |
| Nearest name | Cool Green (#33B864) |
| Black text | 7.66:1 |
| White text | 2.74:1 |
Values
| HEX | #21B35B |
| RGB | rgb(33, 179, 91) |
| HSL | hsl(144, 69%, 42%) |
| OKLCH | oklch(67.4% 0.173 150.8) |
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 #21B35B | 2.74:1 | Fails | Lc -57.7 | Large or bold text, headings |
| Black text on #21B35B | 7.66:1 | AAA | Lc 51.6 | Large or bold text, headings |
| #21B35B text on white | 2.74:1 | Fails | Lc 52.4 | Large or bold text, headings |
| #21B35B text on black | 7.66:1 | 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
#EFF8F1
oklch(97% 0.013 152.6)
-
Step 100
100
#DCF0DF
oklch(93.6% 0.031 149.8)
-
Step 200
200
#BDE5C5
oklch(88.5% 0.06 150.9)
-
Step 300
300
#8BD59D
oklch(81% 0.108 151.1)
-
Step 400
400 (this color)
#21B35B
oklch(67.4% 0.173 150.8)
-
Step 500
500
#00A54F
oklch(63.2% 0.171 150.8)
-
Step 600
600
#008B41
oklch(55.7% 0.151 150.7)
-
Step 700
700
#007536
oklch(49.2% 0.133 150.8)
-
Step 800
800
#00602B
oklch(42.8% 0.116 150.8)
-
Step 900
900
#005023
oklch(37.7% 0.102 150.9)
-
Step 950
950
#003012
oklch(27% 0.073 150.7)
#21B35B 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) | #B4A354 | 0.144 |
| Deuteranopia (no green cones) | #A49861 | 0.141 |
| Tritanopia (no blue cones) | #00B09E | 0.094 |
| Achromatopsia (no color) | #9C9C9C | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21B35B
#21B35B
oklch(67.4% 0.173 150.8)
- #D069C7
#D069C7
oklch(67.3% 0.173 330.7)
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 #21B35B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Green #33B864 ΔE 0.019
- Shamrock #01B44C ΔE 0.020
- Medium Green #39AD48 ΔE 0.022
- Jade Green #2BAF6A ΔE 0.025
- Dark Pastel Green #56AE57 ΔE 0.030
- Seaweed Green #35AD6B ΔE 0.032
- Medium Sea Green #3CB371 ΔE 0.032
- Green Teal #0CB577 ΔE 0.033
Use #21B35B 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.