#21AF5A
Closest named color: Medium Green (#39AD48). oklch(66.4% 0.168 151), rgb(33, 175, 90).
Aa
Black text reads best on this color (7.34:1).
About this color
#21AF5A is a medium-light, vivid green. In OKLCH its lightness is 66%, its chroma 0.168 and its hue 151°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Green (#39AD48), ΔE 0.018 away. Black text reads best on it, at 7.34:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.168) |
| Temperature | in between |
| Nearest name | Medium Green (#39AD48) |
| Black text | 7.34:1 |
| White text | 2.85:1 |
Values
| HEX | #21AF5A |
| RGB | rgb(33, 175, 90) |
| HSL | hsl(144, 68%, 41%) |
| OKLCH | oklch(66.4% 0.168 151) |
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 #21AF5A | 2.85:1 | Fails | Lc -59.5 | Large or bold text, headings |
| Black text on #21AF5A | 7.34:1 | AAA | Lc 49.8 | Large or bold text, headings |
| #21AF5A text on white | 2.85:1 | Fails | Lc 54.2 | Large or bold text, headings |
| #21AF5A text on black | 7.34:1 | AAA | Lc -47.6 | 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 500.
-
Step 50
50
#F0F8F2
oklch(97.1% 0.012 153.7)
-
Step 100
100
#DFEFE2
oklch(93.7% 0.024 151.2)
-
Step 200
200
#C4E2CA
oklch(88.4% 0.045 151.2)
-
Step 300
300
#9AD0A6
oklch(80.9% 0.081 151.1)
-
Step 400
400
#5BB875
oklch(70.8% 0.132 150.8)
-
Step 500
500 (this color)
#21AF5A
oklch(66.4% 0.168 151)
-
Step 600
600
#008B42
oklch(55.7% 0.15 151)
-
Step 700
700
#007537
oklch(49.2% 0.132 151.1)
-
Step 800
800
#00602C
oklch(42.8% 0.115 151.2)
-
Step 900
900
#005023
oklch(37.7% 0.102 150.9)
-
Step 950
950
#033013
oklch(27.2% 0.071 150.4)
#21AF5A 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) | #B09F53 | 0.141 |
| Deuteranopia (no green cones) | #A09460 | 0.139 |
| Tritanopia (no blue cones) | #00AC9B | 0.092 |
| Achromatopsia (no color) | #999999 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21AF5A
#21AF5A
oklch(66.4% 0.168 151)
- #CC67C2
#CC67C2
oklch(66.3% 0.169 331.1)
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 #21AF5A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Green #39AD48 ΔE 0.018
- Jade Green #2BAF6A ΔE 0.021
- Shamrock #01B44C ΔE 0.025
- Seaweed Green #35AD6B ΔE 0.026
- Cool Green #33B864 ΔE 0.029
- Dark Pastel Green #56AE57 ΔE 0.030
- Mid Green #50A747 ΔE 0.030
- Medium Sea Green #3CB371 ΔE 0.034
Use #21AF5A 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.