#21A747
Closest named color: Medium Green (#39AD48). oklch(63.9% 0.175 147.6), rgb(33, 167, 71).
Aa
Black text reads best on this color (6.68:1).
About this color
#21A747 is a medium-light, vivid green. In OKLCH its lightness is 64%, its chroma 0.175 and its hue 148°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Green (#39AD48), ΔE 0.023 away. Black text reads best on it, at 6.68:1.
| Hue family | Greens |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.175) |
| Temperature | in between |
| Nearest name | Medium Green (#39AD48) |
| Black text | 6.68:1 |
| White text | 3.14:1 |
Values
| HEX | #21A747 |
| RGB | rgb(33, 167, 71) |
| HSL | hsl(137, 67%, 39%) |
| OKLCH | oklch(63.9% 0.175 147.6) |
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 #21A747 | 3.14:1 | AA large text | Lc -63.3 | Content text, not long reading |
| Black text on #21A747 | 6.68:1 | AA | Lc 46.1 | Large or bold text, headings |
| #21A747 text on white | 3.14:1 | AA large text | Lc 58.0 | Large or bold text, headings |
| #21A747 text on black | 6.68:1 | AA | Lc -43.8 | Non-text elements, placeholder text |
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
#F1F8F1
oklch(97.2% 0.012 145.5)
-
Step 100
100
#DFEFE1
oklch(93.6% 0.025 149.1)
-
Step 200
200
#C5E2C8
oklch(88.4% 0.047 148.1)
-
Step 300
300
#9BD0A1
oklch(80.8% 0.086 147.7)
-
Step 400
400
#5FB76D
oklch(70.6% 0.137 147.5)
-
Step 500
500 (this color)
#21A747
oklch(63.9% 0.175 147.6)
-
Step 600
600
#008B34
oklch(55.5% 0.162 147.6)
-
Step 700
700
#00752B
oklch(49% 0.143 147.8)
-
Step 800
800
#006021
oklch(42.6% 0.125 147.5)
-
Step 900
900
#00501B
oklch(37.6% 0.109 147.8)
-
Step 950
950
#052F10
oklch(26.9% 0.071 148)
#21A747 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) | #A9983E | 0.138 |
| Deuteranopia (no green cones) | #9A8D4F | 0.137 |
| Tritanopia (no blue cones) | #00A392 | 0.103 |
| Achromatopsia (no color) | #919191 | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21A747
#21A747
oklch(63.9% 0.175 147.6)
- #C25FC1
#C25FC1
oklch(63.9% 0.175 327.8)
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 #21A747, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Green #39AD48 ΔE 0.023
- Mid Green #50A747 ΔE 0.028
- Kelly Green #02AB2E ΔE 0.029
- Shamrock #01B44C ΔE 0.037
- Grassy Green #419C03 ΔE 0.043
- Grass Green #3F9B0B ΔE 0.043
- Jade Green #2BAF6A ΔE 0.043
- Grass #5CAC2D ΔE 0.045
Use #21A747 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.