#63AC4E
Closest named color: Fern (#63A950). oklch(67.5% 0.148 139.1), rgb(99, 172, 78).
Aa
Black text reads best on this color (7.54:1).
About this color
#63AC4E is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.148 and its hue 139°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern (#63A950), ΔE 0.010 away. Black text reads best on it, at 7.54:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.148) |
| Temperature | in between |
| Nearest name | Fern (#63A950) |
| Black text | 7.54:1 |
| White text | 2.78:1 |
Values
| HEX | #63AC4E |
| RGB | rgb(99, 172, 78) |
| HSL | hsl(107, 38%, 49%) |
| OKLCH | oklch(67.5% 0.148 139.1) |
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 #63AC4E | 2.78:1 | Fails | Lc -58.7 | Large or bold text, headings |
| Black text on #63AC4E | 7.54:1 | AAA | Lc 50.6 | Large or bold text, headings |
| #63AC4E text on white | 2.78:1 | Fails | Lc 53.5 | Large or bold text, headings |
| #63AC4E text on black | 7.54:1 | AAA | Lc -48.4 | 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
#F1F8F0
oklch(97.2% 0.013 141.8)
-
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
#A2D096
oklch(81% 0.093 139.2)
-
Step 400
400 (this color)
#63AC4E
oklch(67.5% 0.148 139.1)
-
Step 500
500
#40A318
oklch(63.2% 0.19 139.1)
-
Step 600
600
#2F8A00
oklch(55.7% 0.176 139.1)
-
Step 700
700
#267400
oklch(49.1% 0.155 139.2)
-
Step 800
800
#1E5F00
oklch(42.7% 0.135 139.1)
-
Step 900
900
#184F00
oklch(37.6% 0.119 139)
-
Step 950
950
#0E2F04
oklch(27% 0.079 139.3)
#63AC4E 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) | #B19F45 | 0.101 |
| Deuteranopia (no green cones) | #A69855 | 0.101 |
| Tritanopia (no blue cones) | #5EA797 | 0.101 |
| Achromatopsia (no color) | #9B9B9B | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63AC4E
#63AC4E
oklch(67.5% 0.148 139.1)
- #BD76D0
#BD76D0
oklch(67.4% 0.149 318.9)
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 #63AC4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern #63A950 ΔE 0.010
- Dark Pastel Green #56AE57 ΔE 0.013
- Leaf #71AA34 ΔE 0.023
- Asparagus #77AB56 ΔE 0.025
- Mid Green #50A747 ΔE 0.025
- Boring Green #63B365 ΔE 0.028
- Off Green #6BA353 ΔE 0.029
- Algae #54AC68 ΔE 0.030
Use #63AC4E 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.