#63AD4B
Closest named color: Fern (#63A950). oklch(67.7% 0.153 138.7), rgb(99, 173, 75).
Aa
Black text reads best on this color (7.60:1).
About this color
#63AD4B is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.153 and its hue 139°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern (#63A950), ΔE 0.014 away. Black text reads best on it, at 7.60:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.153) |
| Temperature | in between |
| Nearest name | Fern (#63A950) |
| Black text | 7.60:1 |
| White text | 2.75:1 |
Values
| HEX | #63AD4B |
| RGB | rgb(99, 173, 75) |
| HSL | hsl(105, 40%, 49%) |
| OKLCH | oklch(67.7% 0.153 138.7) |
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 #63AD4B | 2.75:1 | Fails | Lc -58.3 | Large or bold text, headings |
| Black text on #63AD4B | 7.60:1 | AAA | Lc 51.0 | Large or bold text, headings |
| #63AD4B text on white | 2.75:1 | Fails | Lc 53.1 | Large or bold text, headings |
| #63AD4B text on black | 7.60:1 | AAA | Lc -48.8 | 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
#F1F8EF
oklch(97.1% 0.014 138.7)
-
Step 100
100
#E1EFDD
oklch(93.7% 0.028 138.7)
-
Step 200
200
#C8E2C1
oklch(88.5% 0.052 139.1)
-
Step 300
300
#A2D094
oklch(81% 0.095 138.5)
-
Step 400
400 (this color)
#63AD4B
oklch(67.7% 0.153 138.7)
-
Step 500
500
#3FA308
oklch(63.1% 0.195 138.6)
-
Step 600
600
#328900
oklch(55.5% 0.174 138.7)
-
Step 700
700
#297400
oklch(49.2% 0.154 138.7)
-
Step 800
800
#205F00
oklch(42.8% 0.134 138.7)
-
Step 900
900
#194F00
oklch(37.7% 0.118 138.8)
-
Step 950
950
#0E2F02
oklch(27% 0.081 138.5)
#63AD4B 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) | #B2A041 | 0.102 |
| Deuteranopia (no green cones) | #A89952 | 0.102 |
| Tritanopia (no blue cones) | #5EA897 | 0.103 |
| Achromatopsia (no color) | #9C9C9C | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63AD4B
#63AD4B
oklch(67.7% 0.153 138.7)
- #BF76D3
#BF76D3
oklch(67.8% 0.153 318.8)
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 #63AD4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern #63A950 ΔE 0.014
- Dark Pastel Green #56AE57 ΔE 0.014
- Leaf #71AA34 ΔE 0.020
- Mid Green #50A747 ΔE 0.027
- Grass #5CAC2D ΔE 0.027
- Asparagus #77AB56 ΔE 0.027
- Boring Green #63B365 ΔE 0.029
- Off Green #6BA353 ΔE 0.033
Use #63AD4B 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.