#21AB63
Closest named color: Jade Green (#2BAF6A). oklch(65.4% 0.155 154.2), rgb(33, 171, 99).
Aa
Black text reads best on this color (7.07:1).
About this color
#21AB63 is a medium-light, vivid green. In OKLCH its lightness is 65%, its chroma 0.155 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Jade Green (#2BAF6A), ΔE 0.014 away. Black text reads best on it, at 7.07:1.
| Hue family | Greens |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.155) |
| Temperature | in between |
| Nearest name | Jade Green (#2BAF6A) |
| Black text | 7.07:1 |
| White text | 2.97:1 |
Values
| HEX | #21AB63 |
| RGB | rgb(33, 171, 99) |
| HSL | hsl(149, 68%, 40%) |
| OKLCH | oklch(65.4% 0.155 154.2) |
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 #21AB63 | 2.97:1 | Fails | Lc -61.1 | Content text, not long reading |
| Black text on #21AB63 | 7.07:1 | AAA | Lc 48.3 | Large or bold text, headings |
| #21AB63 text on white | 2.97:1 | Fails | Lc 55.8 | Large or bold text, headings |
| #21AB63 text on black | 7.07:1 | AAA | Lc -46.0 | 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
#DFEEE3
oklch(93.5% 0.022 154.1)
-
Step 200
200
#C5E2CD
oklch(88.6% 0.042 154)
-
Step 300
300
#9AD0AB
oklch(81% 0.077 154.5)
-
Step 400
400
#5CB77E
oklch(70.8% 0.122 154.3)
-
Step 500
500 (this color)
#21AB63
oklch(65.4% 0.155 154.2)
-
Step 600
600
#008A4C
oklch(55.6% 0.139 154.3)
-
Step 700
700
#00743F
oklch(49.1% 0.123 154.3)
-
Step 800
800
#005F32
oklch(42.6% 0.107 154.1)
-
Step 900
900
#005029
oklch(37.8% 0.096 153.9)
-
Step 950
950
#032F17
oklch(26.9% 0.064 154.1)
#21AB63 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) | #AB9C5E | 0.137 |
| Deuteranopia (no green cones) | #9B9168 | 0.134 |
| Tritanopia (no blue cones) | #00A999 | 0.077 |
| Achromatopsia (no color) | #969696 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21AB63
#21AB63
oklch(65.4% 0.155 154.2)
- #C868B7
#C868B7
oklch(65.5% 0.155 334.2)
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 #21AB63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jade Green #2BAF6A ΔE 0.014
- Seaweed Green #35AD6B ΔE 0.016
- Jade #1FA774 ΔE 0.029
- Bluey Green #2BB179 ΔE 0.031
- Dark Seafoam Green #3EAF76 ΔE 0.032
- Medium Sea Green #3CB371 ΔE 0.032
- Green Teal #0CB577 ΔE 0.032
- Algae #54AC68 ΔE 0.032
Use #21AB63 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.