#21BA43
Closest named color: Shamrock Green (#02C14D). oklch(69% 0.201 145.9), rgb(33, 186, 67).
Aa
Black text reads best on this color (8.16:1).
About this color
#21BA43 is a medium-light, vivid green. In OKLCH its lightness is 69%, its chroma 0.201 and its hue 146°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock Green (#02C14D), ΔE 0.019 away. Black text reads best on it, at 8.16:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.201) |
| Temperature | in between |
| Nearest name | Shamrock Green (#02C14D) |
| Black text | 8.16:1 |
| White text | 2.57:1 |
Values
| HEX | #21BA43 |
| RGB | rgb(33, 186, 67) |
| HSL | hsl(133, 70%, 43%) |
| OKLCH | oklch(69% 0.201 145.9) |
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 #21BA43 | 2.57:1 | Fails | Lc -54.8 | Large or bold text, headings |
| Black text on #21BA43 | 8.16:1 | AAA | Lc 54.3 | Large or bold text, headings |
| #21BA43 text on white | 2.57:1 | Fails | Lc 49.7 | Large or bold text, headings |
| #21BA43 text on black | 8.16:1 | AAA | Lc -52.3 | 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
#EFF9EF
oklch(97.2% 0.017 145.4)
-
Step 100
100
#DBF1DC
oklch(93.6% 0.036 146.5)
-
Step 200
200
#BCE6BE
oklch(88.4% 0.07 146.2)
-
Step 300
300
#89D68F
oklch(80.8% 0.125 146.1)
-
Step 400
400 (this color)
#21BA43
oklch(69% 0.201 145.9)
-
Step 500
500
#00A634
oklch(63.1% 0.193 145.9)
-
Step 600
600
#008C2A
oklch(55.7% 0.171 145.8)
-
Step 700
700
#007622
oklch(49.2% 0.151 145.8)
-
Step 800
800
#00601A
oklch(42.5% 0.131 145.8)
-
Step 900
900
#005115
oklch(37.8% 0.116 146)
-
Step 950
950
#003009
oklch(26.9% 0.082 146)
#21BA43 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) | #BDA835 | 0.153 |
| Deuteranopia (no green cones) | #AD9D4E | 0.153 |
| Tritanopia (no blue cones) | #00B5A1 | 0.123 |
| Achromatopsia (no color) | #A1A1A1 | 0.202 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21BA43
#21BA43
oklch(69% 0.201 145.9)
- #D866DD
#D866DD
oklch(69% 0.202 325.9)
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 #21BA43, closest first.
No curated palette has a color within ΔE 0.04 of #21BA43.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock Green #02C14D ΔE 0.019
- Shamrock #01B44C ΔE 0.023
- Leafy Green #51B73B ΔE 0.023
- Frog Green #58BC08 ΔE 0.038
- Cool Green #33B864 ΔE 0.039
- Medium Green #39AD48 ΔE 0.039
- Grass #5CAC2D ΔE 0.045
- Kelly Green #02AB2E ΔE 0.046
Use #21BA43 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.