#63AA57
Closest named color: Fern (#63A950). oklch(67.1% 0.137 140.8), rgb(99, 170, 87).
Aa
Black text reads best on this color (7.41:1).
About this color
#63AA57 is a medium-light, moderately saturated green. In OKLCH its lightness is 67%, its chroma 0.137 and its hue 141°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern (#63A950), ΔE 0.007 away. Black text reads best on it, at 7.41:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.137) |
| Temperature | in between |
| Nearest name | Fern (#63A950) |
| Black text | 7.41:1 |
| White text | 2.83:1 |
Values
| HEX | #63AA57 |
| RGB | rgb(99, 170, 87) |
| HSL | hsl(111, 33%, 50%) |
| OKLCH | oklch(67.1% 0.137 140.8) |
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 #63AA57 | 2.83:1 | Fails | Lc -59.4 | Large or bold text, headings |
| Black text on #63AA57 | 7.41:1 | AAA | Lc 49.9 | Large or bold text, headings |
| #63AA57 text on white | 2.83:1 | Fails | Lc 54.2 | Large or bold text, headings |
| #63AA57 text on black | 7.41:1 | AAA | Lc -47.7 | 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
#F1F7F0
oklch(97% 0.011 141.3)
-
Step 100
100
#E1EEDF
oklch(93.5% 0.024 141.5)
-
Step 200
200
#C9E1C4
oklch(88.4% 0.047 140.3)
-
Step 300
300
#A3CF9B
oklch(81% 0.085 140.7)
-
Step 400
400 (this color)
#63AA57
oklch(67.1% 0.137 140.8)
-
Step 500
500
#42A230
oklch(63.2% 0.176 140.8)
-
Step 600
600
#208B00
oklch(55.6% 0.182 140.8)
-
Step 700
700
#197500
oklch(49.1% 0.161 140.9)
-
Step 800
800
#136000
oklch(42.7% 0.14 140.8)
-
Step 900
900
#164F0A
oklch(37.6% 0.114 140.8)
-
Step 950
950
#0F2F09
oklch(27.1% 0.073 140.7)
#63AA57 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) | #AE9E50 | 0.097 |
| Deuteranopia (no green cones) | #A4975C | 0.096 |
| Tritanopia (no blue cones) | #5DA597 | 0.092 |
| Achromatopsia (no color) | #9A9A9A | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63AA57
#63AA57
oklch(67.1% 0.137 140.8)
- #BB78C9
#BB78C9
oklch(67.2% 0.136 320.5)
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 #63AA57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern #63A950 ΔE 0.007
- Dark Pastel Green #56AE57 ΔE 0.015
- Off Green #6BA353 ΔE 0.020
- Algae #54AC68 ΔE 0.020
- Asparagus #77AB56 ΔE 0.022
- Boring Green #63B365 ΔE 0.026
- Mid Green #50A747 ΔE 0.028
- Dull Green #74A662 ΔE 0.028
Use #63AA57 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.