#3FB663
Closest named color: Cool Green (#33B864). oklch(69% 0.16 149.9), rgb(63, 182, 99).
Aa
Black text reads best on this color (8.08:1).
About this color
#3FB663 is a medium-light, vivid green. In OKLCH its lightness is 69%, its chroma 0.160 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Cool Green (#33B864), ΔE 0.007 away. Black text reads best on it, at 8.08:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.160) |
| Temperature | in between |
| Nearest name | Cool Green (#33B864) |
| Black text | 8.08:1 |
| White text | 2.59:1 |
Values
| HEX | #3FB663 |
| RGB | rgb(63, 182, 99) |
| HSL | hsl(138, 49%, 48%) |
| OKLCH | oklch(69% 0.16 149.9) |
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 #3FB663 | 2.59:1 | Fails | Lc -55.5 | Large or bold text, headings |
| Black text on #3FB663 | 8.08:1 | AAA | Lc 53.6 | Large or bold text, headings |
| #3FB663 text on white | 2.59:1 | Fails | Lc 50.4 | Large or bold text, headings |
| #3FB663 text on black | 8.08:1 | AAA | Lc -51.6 | 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
#EFF8F1
oklch(97% 0.013 152.6)
-
Step 100
100
#DDF0E0
oklch(93.7% 0.029 150.1)
-
Step 200
200
#C0E4C6
oklch(88.5% 0.056 149.9)
-
Step 300
300
#91D39E
oklch(80.8% 0.1 149.9)
-
Step 400
400 (this color)
#3FB663
oklch(69% 0.16 149.9)
-
Step 500
500
#00A54B
oklch(63.1% 0.174 149.9)
-
Step 600
600
#008B3E
oklch(55.6% 0.154 149.9)
-
Step 700
700
#007533
oklch(49.1% 0.136 149.9)
-
Step 800
800
#006029
oklch(42.7% 0.118 150)
-
Step 900
900
#005021
oklch(37.7% 0.104 150)
-
Step 950
950
#003011
oklch(27% 0.074 150)
#3FB663 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) | #B7A75D | 0.132 |
| Deuteranopia (no green cones) | #A89C69 | 0.131 |
| Tritanopia (no blue cones) | #0DB3A2 | 0.088 |
| Achromatopsia (no color) | #A1A1A1 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FB663
#3FB663
oklch(69% 0.16 149.9)
- #D173CA
#D173CA
oklch(69% 0.16 329.9)
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 #3FB663, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Green #33B864 ΔE 0.007
- Medium Sea Green #3CB371 ΔE 0.022
- Dark Pastel Green #56AE57 ΔE 0.024
- Jade Green #2BAF6A ΔE 0.027
- Boring Green #63B365 ΔE 0.028
- Green Teal #0CB577 ΔE 0.029
- Dark Mint Green #20C073 ΔE 0.029
- Dark Seafoam #1FB57A ΔE 0.031
Use #3FB663 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.