#3FC580
Closest named color: Greenblue (#23C48B). oklch(73.4% 0.153 156.4), rgb(63, 197, 128).
Aa
Black text reads best on this color (9.50:1).
About this color
#3FC580 is a medium-light, vivid green. In OKLCH its lightness is 73%, its chroma 0.153 and its hue 156°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Greenblue (#23C48B), ΔE 0.018 away. Black text reads best on it, at 9.50:1.
| Hue family | Greens |
| Lightness | medium-light (73%) |
| Chroma | vivid (0.153) |
| Temperature | in between |
| Nearest name | Greenblue (#23C48B) |
| Black text | 9.50:1 |
| White text | 2.20:1 |
Values
| HEX | #3FC580 |
| RGB | rgb(63, 197, 128) |
| HSL | hsl(149, 54%, 51%) |
| OKLCH | oklch(73.4% 0.153 156.4) |
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 #3FC580 | 2.20:1 | Fails | Lc -47.8 | Large or bold text, headings |
| Black text on #3FC580 | 9.50:1 | AAA | Lc 60.9 | Content text, not long reading |
| #3FC580 text on white | 2.20:1 | Fails | Lc 43.1 | Non-text elements, placeholder text |
| #3FC580 text on black | 9.50:1 | AAA | Lc -59.1 | 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
#EFF8F2
oklch(97.1% 0.012 157)
-
Step 100
100
#DCF0E2
oklch(93.6% 0.028 155.3)
-
Step 200
200
#BEE4CB
oklch(88.5% 0.052 156.4)
-
Step 300
300
#8CD4A7
oklch(81% 0.097 156.1)
-
Step 400
400 (this color)
#3FC580
oklch(73.4% 0.153 156.4)
-
Step 500
500
#00A462
oklch(63.2% 0.152 156.5)
-
Step 600
600
#008A51
oklch(55.7% 0.135 156.2)
-
Step 700
700
#007444
oklch(49.2% 0.118 156.6)
-
Step 800
800
#005F37
oklch(42.7% 0.102 156.7)
-
Step 900
900
#004F2D
oklch(37.6% 0.09 156.8)
-
Step 950
950
#002F19
oklch(26.9% 0.064 157.1)
#3FC580 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) | #C4B67C | 0.139 |
| Deuteranopia (no green cones) | #B3AA84 | 0.135 |
| Tritanopia (no blue cones) | #00C3B3 | 0.072 |
| Achromatopsia (no color) | #AEAEAE | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FC580
#3FC580
oklch(73.4% 0.153 156.4)
- #E481CD
#E481CD
oklch(73.5% 0.153 336.3)
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 #3FC580, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greenblue #23C48B ΔE 0.018
- Dark Mint #48C072 ΔE 0.018
- Dark Mint Green #20C073 ΔE 0.026
- Algae Green #21C36F ΔE 0.027
- Green Blue #01C08D ΔE 0.031
- Soft Green #6FC276 ΔE 0.033
- Seaweed #18D17B ΔE 0.038
- Cool Green #33B864 ΔE 0.046
Use #3FC580 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.