#63B552
Closest named color: Turtle Green (#75B84F). oklch(69.8% 0.158 140.3), rgb(99, 181, 82).
Aa
Black text reads best on this color (8.26:1).
About this color
#63B552 is a medium-light, vivid green. In OKLCH its lightness is 70%, its chroma 0.158 and its hue 140°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Turtle Green (#75B84F), ΔE 0.021 away. Black text reads best on it, at 8.26:1.
| Hue family | Greens |
| Lightness | medium-light (70%) |
| Chroma | vivid (0.158) |
| Temperature | in between |
| Nearest name | Turtle Green (#75B84F) |
| Black text | 8.26:1 |
| White text | 2.54:1 |
Values
| HEX | #63B552 |
| RGB | rgb(99, 181, 82) |
| HSL | hsl(110, 40%, 52%) |
| OKLCH | oklch(69.8% 0.158 140.3) |
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 #63B552 | 2.54:1 | Fails | Lc -54.7 | Large or bold text, headings |
| Black text on #63B552 | 8.26:1 | AAA | Lc 54.4 | Large or bold text, headings |
| #63B552 text on white | 2.54:1 | Fails | Lc 49.6 | Large or bold text, headings |
| #63B552 text on black | 8.26:1 | AAA | Lc -52.4 | 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
#F1F8EF
oklch(97.1% 0.014 138.7)
-
Step 100
100
#E0EFDD
oklch(93.6% 0.029 140.5)
-
Step 200
200
#C7E3C1
oklch(88.6% 0.055 140.1)
-
Step 300
300
#9ED194
oklch(80.9% 0.099 140.4)
-
Step 400
400 (this color)
#63B552
oklch(69.8% 0.158 140.3)
-
Step 500
500
#31A409
oklch(63% 0.201 140.3)
-
Step 600
600
#268B00
oklch(55.7% 0.18 140.3)
-
Step 700
700
#1E7500
oklch(49.2% 0.159 140.3)
-
Step 800
800
#176000
oklch(42.8% 0.139 140.3)
-
Step 900
900
#125000
oklch(37.7% 0.122 140.2)
-
Step 950
950
#0A2F02
oklch(26.8% 0.083 140)
#63B552 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) | #BAA749 | 0.110 |
| Deuteranopia (no green cones) | #AEA059 | 0.108 |
| Tritanopia (no blue cones) | #5CB09F | 0.105 |
| Achromatopsia (no color) | #A2A2A2 | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63B552
#63B552
oklch(69.8% 0.158 140.3)
- #C97ADA
#C97ADA
oklch(69.9% 0.159 320.3)
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 #63B552, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turtle Green #75B84F ΔE 0.021
- Boring Green #63B365 ΔE 0.024
- Dark Pastel Green #56AE57 ΔE 0.026
- Leafy Green #51B73B ΔE 0.030
- Cool Green #33B864 ΔE 0.032
- Leaf #71AA34 ΔE 0.033
- Fern #63A950 ΔE 0.034
- Asparagus #77AB56 ΔE 0.035
Use #63B552 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.