#63BB4E
Closest named color: Turtle Green (#75B84F). oklch(71.3% 0.169 139.9), rgb(99, 187, 78).
Aa
Black text reads best on this color (8.74:1).
About this color
#63BB4E is a medium-light, vivid green. In OKLCH its lightness is 71%, its chroma 0.169 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 0.019 away. Black text reads best on it, at 8.74:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.169) |
| Temperature | in between |
| Nearest name | Turtle Green (#75B84F) |
| Black text | 8.74:1 |
| White text | 2.40:1 |
Values
| HEX | #63BB4E |
| RGB | rgb(99, 187, 78) |
| HSL | hsl(108, 44%, 52%) |
| OKLCH | oklch(71.3% 0.169 139.9) |
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 #63BB4E | 2.40:1 | Fails | Lc -52.0 | Large or bold text, headings |
| Black text on #63BB4E | 8.74:1 | AAA | Lc 57.0 | Large or bold text, headings |
| #63BB4E text on white | 2.40:1 | Fails | Lc 47.0 | Large or bold text, headings |
| #63BB4E text on black | 8.74:1 | AAA | Lc -55.0 | 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
#E0EFDC
oklch(93.6% 0.03 139.1)
-
Step 200
200
#C5E3BF
oklch(88.4% 0.058 140.4)
-
Step 300
300
#9CD290
oklch(81% 0.106 139.9)
-
Step 400
400 (this color)
#63BB4E
oklch(71.3% 0.169 139.9)
-
Step 500
500
#33A400
oklch(63% 0.202 139.8)
-
Step 600
600
#298A00
oklch(55.5% 0.178 139.9)
-
Step 700
700
#217400
oklch(49% 0.157 139.9)
-
Step 800
800
#1A5F00
oklch(42.6% 0.136 139.8)
-
Step 900
900
#145000
oklch(37.8% 0.121 139.9)
-
Step 950
950
#083000
oklch(27.1% 0.087 140)
#63BB4E 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) | #C0AC43 | 0.116 |
| Deuteranopia (no green cones) | #B4A456 | 0.116 |
| Tritanopia (no blue cones) | #5BB5A3 | 0.114 |
| Achromatopsia (no color) | #A7A7A7 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63BB4E
#63BB4E
oklch(71.3% 0.169 139.9)
- #D07CE3
#D07CE3
oklch(71.4% 0.168 320)
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 #63BB4E, closest first.
No curated palette has a color within ΔE 0.04 of #63BB4E.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turtle Green #75B84F ΔE 0.019
- Leafy Green #51B73B ΔE 0.027
- Dark Mint #48C072 ΔE 0.037
- Boring Green #63B365 ΔE 0.039
- Cool Green #33B864 ΔE 0.039
- Algae Green #21C36F ΔE 0.042
- Dark Lime #84B701 ΔE 0.043
- Dark Lime Green #7EBD01 ΔE 0.044
Use #63BB4E 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.