#63B03E
Closest named color: Grass (#5CAC2D). oklch(68.3% 0.167 137), rgb(99, 176, 62).
Aa
Black text reads best on this color (7.81:1).
About this color
#63B03E is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.167 and its hue 137°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grass (#5CAC2D), ΔE 0.018 away. Black text reads best on it, at 7.81:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.167) |
| Temperature | in between |
| Nearest name | Grass (#5CAC2D) |
| Black text | 7.81:1 |
| White text | 2.68:1 |
Values
| HEX | #63B03E |
| RGB | rgb(99, 176, 62) |
| HSL | hsl(101, 48%, 47%) |
| OKLCH | oklch(68.3% 0.167 137) |
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 #63B03E | 2.68:1 | Fails | Lc -57.2 | Large or bold text, headings |
| Black text on #63B03E | 7.81:1 | AAA | Lc 52.1 | Large or bold text, headings |
| #63B03E text on white | 2.68:1 | Fails | Lc 52.0 | Large or bold text, headings |
| #63B03E text on black | 7.81:1 | AAA | Lc -49.9 | 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
#E1EFDB
oklch(93.6% 0.03 136.1)
-
Step 200
200
#C8E3BD
oklch(88.6% 0.059 136.6)
-
Step 300
300
#A1D18D
oklch(81% 0.105 136.8)
-
Step 400
400 (this color)
#63B03E
oklch(68.3% 0.167 137)
-
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)
#63B03E 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) | #B6A230 | 0.107 |
| Deuteranopia (no green cones) | #AB9B47 | 0.107 |
| Tritanopia (no blue cones) | #5FAA98 | 0.117 |
| Achromatopsia (no color) | #9E9E9E | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63B03E
#63B03E
oklch(68.3% 0.167 137)
- #C274DD
#C274DD
oklch(68.3% 0.168 316.9)
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 #63B03E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grass #5CAC2D ΔE 0.018
- Leaf #71AA34 ΔE 0.019
- Leafy Green #51B73B ΔE 0.024
- Dark Pastel Green #56AE57 ΔE 0.027
- Fern #63A950 ΔE 0.030
- Leaf Green #5CA904 ΔE 0.034
- Turtle Green #75B84F ΔE 0.034
- Medium Green #39AD48 ΔE 0.034
Use #63B03E 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.