#21AB59
Closest named color: Medium Green (#39AD48). oklch(65.3% 0.164 151.3), rgb(33, 171, 89).
Aa
Black text reads best on this color (7.03:1).
About this color
#21AB59 is a medium-light, vivid green. In OKLCH its lightness is 65%, its chroma 0.164 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 0.022 away. Black text reads best on it, at 7.03:1.
| Hue family | Greens |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.164) |
| Temperature | in between |
| Nearest name | Medium Green (#39AD48) |
| Black text | 7.03:1 |
| White text | 2.98:1 |
Values
| HEX | #21AB59 |
| RGB | rgb(33, 171, 89) |
| HSL | hsl(144, 68%, 40%) |
| OKLCH | oklch(65.3% 0.164 151.3) |
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 #21AB59 | 2.98:1 | Fails | Lc -61.3 | Content text, not long reading |
| Black text on #21AB59 | 7.03:1 | AAA | Lc 48.1 | Large or bold text, headings |
| #21AB59 text on white | 2.98:1 | Fails | Lc 56.0 | Large or bold text, headings |
| #21AB59 text on black | 7.03:1 | AAA | Lc -45.8 | 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
#C5E2CB
oklch(88.5% 0.044 151.5)
-
Step 300
300
#9AD0A7
oklch(80.9% 0.08 151.7)
-
Step 400
400
#5DB777
oklch(70.7% 0.128 151.3)
-
Step 500
500 (this color)
#21AB59
oklch(65.3% 0.164 151.3)
-
Step 600
600
#008B43
oklch(55.7% 0.149 151.3)
-
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
#005024
oklch(37.7% 0.101 151.4)
-
Step 950
950
#042F14
oklch(26.9% 0.067 151.1)
#21AB59 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) | #AC9C53 | 0.138 |
| Deuteranopia (no green cones) | #9C915F | 0.136 |
| Tritanopia (no blue cones) | #00A898 | 0.090 |
| Achromatopsia (no color) | #959595 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21AB59
#21AB59
oklch(65.3% 0.164 151.3)
- #C765BD
#C765BD
oklch(65.2% 0.165 331.2)
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 #21AB59, closest first.
No curated palette has a color within ΔE 0.04 of #21AB59.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Green #39AD48 ΔE 0.022
- Jade Green #2BAF6A ΔE 0.023
- Seaweed Green #35AD6B ΔE 0.026
- Mid Green #50A747 ΔE 0.027
- Dark Pastel Green #56AE57 ΔE 0.034
- Shamrock #01B44C ΔE 0.034
- Medium Sea Green #3CB371 ΔE 0.039
- Algae #54AC68 ΔE 0.039
Use #21AB59 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.