#63B33F
Closest named color: Leafy Green (#51B73B). oklch(69.1% 0.171 137.4), rgb(99, 179, 63).
Aa
Black text reads best on this color (8.05:1).
About this color
#63B33F is a medium-light, vivid green. In OKLCH its lightness is 69%, its chroma 0.171 and its hue 137°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Leafy Green (#51B73B), ΔE 0.019 away. Black text reads best on it, at 8.05:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.171) |
| Temperature | in between |
| Nearest name | Leafy Green (#51B73B) |
| Black text | 8.05:1 |
| White text | 2.60:1 |
Values
| HEX | #63B33F |
| RGB | rgb(99, 179, 63) |
| HSL | hsl(101, 48%, 47%) |
| OKLCH | oklch(69.1% 0.171 137.4) |
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 #63B33F | 2.60:1 | Fails | Lc -55.8 | Large or bold text, headings |
| Black text on #63B33F | 8.05:1 | AAA | Lc 53.4 | Large or bold text, headings |
| #63B33F text on white | 2.60:1 | Fails | Lc 50.7 | Large or bold text, headings |
| #63B33F text on black | 8.05:1 | AAA | Lc -51.3 | 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
#F1F8EF
oklch(97.1% 0.014 138.7)
-
Step 100
100
#E0EFDB
oklch(93.5% 0.031 137.8)
-
Step 200
200
#C7E3BD
oklch(88.5% 0.059 137.5)
-
Step 300
300
#9FD18D
oklch(80.9% 0.106 137.6)
-
Step 400
400 (this color)
#63B33F
oklch(69.1% 0.171 137.4)
-
Step 500
500
#46A200
oklch(63.1% 0.192 137.3)
-
Step 600
600
#398800
oklch(55.5% 0.17 137.5)
-
Step 700
700
#2F7300
oklch(49.2% 0.15 137.5)
-
Step 800
800
#255E00
oklch(42.7% 0.13 137.5)
-
Step 900
900
#1E4F00
oklch(37.9% 0.116 137.5)
-
Step 950
950
#0F2F00
oklch(27% 0.083 137.4)
#63B33F 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) | #B9A430 | 0.110 |
| Deuteranopia (no green cones) | #AE9E49 | 0.110 |
| Tritanopia (no blue cones) | #5EAD9B | 0.119 |
| Achromatopsia (no color) | #A0A0A0 | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63B33F
#63B33F
oklch(69.1% 0.171 137.4)
- #C676E0
#C676E0
oklch(69.2% 0.17 317.4)
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 #63B33F, closest first.
No curated palette has a color within ΔE 0.04 of #63B33F.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leafy Green #51B73B ΔE 0.019
- Grass #5CAC2D ΔE 0.024
- Leaf #71AA34 ΔE 0.026
- Turtle Green #75B84F ΔE 0.029
- Dark Pastel Green #56AE57 ΔE 0.032
- Fern #63A950 ΔE 0.037
- Leaf Green #5CA904 ΔE 0.038
- Medium Green #39AD48 ΔE 0.039
Use #63B33F 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.