#3FC55E
Closest named color: Algae Green (#21C36F). oklch(72.8% 0.184 147.6), rgb(63, 197, 94).
Aa
Black text reads best on this color (9.35:1).
About this color
#3FC55E is a medium-light, vivid green. In OKLCH its lightness is 73%, its chroma 0.184 and its hue 148°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Algae Green (#21C36F), ΔE 0.023 away. Black text reads best on it, at 9.35:1.
| Hue family | Greens |
| Lightness | medium-light (73%) |
| Chroma | vivid (0.184) |
| Temperature | in between |
| Nearest name | Algae Green (#21C36F) |
| Black text | 9.35:1 |
| White text | 2.24:1 |
Values
| HEX | #3FC55E |
| RGB | rgb(63, 197, 94) |
| HSL | hsl(134, 54%, 51%) |
| OKLCH | oklch(72.8% 0.184 147.6) |
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 #3FC55E | 2.24:1 | Fails | Lc -48.6 | Large or bold text, headings |
| Black text on #3FC55E | 9.35:1 | AAA | Lc 60.2 | Content text, not long reading |
| #3FC55E text on white | 2.24:1 | Fails | Lc 43.8 | Non-text elements, placeholder text |
| #3FC55E text on black | 9.35:1 | AAA | Lc -58.4 | 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
#EFF8F0
oklch(97% 0.014 148.8)
-
Step 100
100
#DCF0DD
oklch(93.5% 0.033 146.7)
-
Step 200
200
#BEE5C1
oklch(88.4% 0.064 147.1)
-
Step 300
300
#8CD596
oklch(80.9% 0.115 147.8)
-
Step 400
400 (this color)
#3FC55E
oklch(72.8% 0.184 147.6)
-
Step 500
500
#00A63F
oklch(63.2% 0.185 147.5)
-
Step 600
600
#008B34
oklch(55.5% 0.162 147.6)
-
Step 700
700
#00752A
oklch(49% 0.144 147.5)
-
Step 800
800
#006021
oklch(42.6% 0.125 147.5)
-
Step 900
900
#00501A
oklch(37.6% 0.11 147.5)
-
Step 950
950
#00300D
oklch(27% 0.078 147.8)
#3FC55E 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) | #C7B455 | 0.145 |
| Deuteranopia (no green cones) | #B7A966 | 0.144 |
| Tritanopia (no blue cones) | #00C1AD | 0.106 |
| Achromatopsia (no color) | #ADADAD | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FC55E
#3FC55E
oklch(72.8% 0.184 147.6)
- #E278E2
#E278E2
oklch(72.8% 0.184 327.3)
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 #3FC55E, closest first.
No curated palette has a color within ΔE 0.04 of #3FC55E.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Algae Green #21C36F ΔE 0.023
- Shamrock Green #02C14D ΔE 0.030
- Dark Mint #48C072 ΔE 0.032
- Dark Mint Green #20C073 ΔE 0.033
- Seaweed #18D17B ΔE 0.038
- Cool Green #33B864 ΔE 0.042
- Leafy Green #51B73B ΔE 0.042
- Apple #6ECB3C ΔE 0.047
Use #3FC55E 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.