#63AD40
Closest named color: Leaf (#71AA34). oklch(67.6% 0.162 137), rgb(99, 173, 64).
Aa
Black text reads best on this color (7.58:1).
About this color
#63AD40 is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.162 and its hue 137°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Leaf (#71AA34), ΔE 0.015 away. Black text reads best on it, at 7.58:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.162) |
| Temperature | in between |
| Nearest name | Leaf (#71AA34) |
| Black text | 7.58:1 |
| White text | 2.76:1 |
Values
| HEX | #63AD40 |
| RGB | rgb(99, 173, 64) |
| HSL | hsl(101, 46%, 46%) |
| OKLCH | oklch(67.6% 0.162 137) |
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 #63AD40 | 2.76:1 | Fails | Lc -58.5 | Large or bold text, headings |
| Black text on #63AD40 | 7.58:1 | AAA | Lc 50.8 | Large or bold text, headings |
| #63AD40 text on white | 2.76:1 | Fails | Lc 53.2 | Large or bold text, headings |
| #63AD40 text on black | 7.58:1 | AAA | Lc -48.6 | 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
#E1EFDC
oklch(93.6% 0.029 137.4)
-
Step 200
200
#C8E2BE
oklch(88.4% 0.056 137)
-
Step 300
300
#A2D08F
oklch(80.9% 0.101 136.8)
-
Step 400
400 (this color)
#63AD40
oklch(67.6% 0.162 137)
-
Step 500
500
#48A200
oklch(63.2% 0.192 137)
-
Step 600
600
#3B8800
oklch(55.6% 0.169 137.1)
-
Step 700
700
#317200
oklch(49% 0.148 136.9)
-
Step 800
800
#275E00
oklch(42.7% 0.129 137)
-
Step 900
900
#1F4E00
oklch(37.6% 0.114 137)
-
Step 950
950
#102F00
oklch(27.1% 0.082 137)
#63AD40 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) | #B39F33 | 0.104 |
| Deuteranopia (no green cones) | #A89949 | 0.103 |
| Tritanopia (no blue cones) | #5FA796 | 0.114 |
| Achromatopsia (no color) | #9B9B9B | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63AD40
#63AD40
oklch(67.6% 0.162 137)
- #BE74D8
#BE74D8
oklch(67.6% 0.161 316.8)
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 #63AD40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leaf #71AA34 ΔE 0.015
- Grass #5CAC2D ΔE 0.017
- Fern #63A950 ΔE 0.022
- Dark Pastel Green #56AE57 ΔE 0.022
- Mid Green #50A747 ΔE 0.027
- Medium Green #39AD48 ΔE 0.031
- Leafy Green #51B73B ΔE 0.032
- Leaf Green #5CA904 ΔE 0.033
Use #63AD40 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.