#21BA66
Closest named color: Cool Green (#33B864). oklch(69.5% 0.172 152.7), rgb(33, 186, 102).
Aa
Black text reads best on this color (8.28:1).
About this color
#21BA66 is a medium-light, vivid green. In OKLCH its lightness is 69%, its chroma 0.172 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Cool Green (#33B864), ΔE 0.007 away. Black text reads best on it, at 8.28:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.172) |
| Temperature | in between |
| Nearest name | Cool Green (#33B864) |
| Black text | 8.28:1 |
| White text | 2.53:1 |
Values
| HEX | #21BA66 |
| RGB | rgb(33, 186, 102) |
| HSL | hsl(147, 70%, 43%) |
| OKLCH | oklch(69.5% 0.172 152.7) |
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 #21BA66 | 2.53:1 | Fails | Lc -54.2 | Large or bold text, headings |
| Black text on #21BA66 | 8.28:1 | AAA | Lc 54.9 | Large or bold text, headings |
| #21BA66 text on white | 2.53:1 | Fails | Lc 49.2 | Large or bold text, headings |
| #21BA66 text on black | 8.28:1 | AAA | Lc -52.8 | 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 400.
-
Step 50
50
#EFF8F1
oklch(97% 0.013 152.6)
-
Step 100
100
#DBF0E0
oklch(93.5% 0.031 152.9)
-
Step 200
200
#BCE5C7
oklch(88.5% 0.059 153.3)
-
Step 300
300
#89D59F
oklch(80.9% 0.108 152.6)
-
Step 400
400 (this color)
#21BA66
oklch(69.5% 0.172 152.7)
-
Step 500
500
#00A456
oklch(63% 0.163 152.8)
-
Step 600
600
#008A47
oklch(55.5% 0.144 152.6)
-
Step 700
700
#00743B
oklch(49% 0.127 152.7)
-
Step 800
800
#005F2F
oklch(42.5% 0.11 152.7)
-
Step 900
900
#005026
oklch(37.8% 0.099 152.3)
-
Step 950
950
#003015
oklch(27.1% 0.07 152.9)
#21BA66 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) | #BAAA60 | 0.147 |
| Deuteranopia (no green cones) | #A99E6C | 0.144 |
| Tritanopia (no blue cones) | #00B7A6 | 0.090 |
| Achromatopsia (no color) | #A3A3A3 | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21BA66
#21BA66
oklch(69.5% 0.172 152.7)
- #D96FCA
#D96FCA
oklch(69.4% 0.172 332.8)
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 #21BA66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Green #33B864 ΔE 0.007
- Dark Mint Green #20C073 ΔE 0.020
- Algae Green #21C36F ΔE 0.026
- Green Teal #0CB577 ΔE 0.030
- Medium Sea Green #3CB371 ΔE 0.030
- Dark Mint #48C072 ΔE 0.031
- Shamrock #01B44C ΔE 0.033
- Dark Seafoam #1FB57A ΔE 0.033
Use #21BA66 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.