#3FC599
Closest named color: Greenblue (#23C48B). oklch(74% 0.132 166.9), rgb(63, 197, 153).
Aa
Black text reads best on this color (9.65:1).
About this color
#3FC599 is a medium-light, moderately saturated green. In OKLCH its lightness is 74%, its chroma 0.132 and its hue 167°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Greenblue (#23C48B), ΔE 0.024 away. Black text reads best on it, at 9.65:1.
| Hue family | Greens |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.132) |
| Temperature | in between |
| Nearest name | Greenblue (#23C48B) |
| Black text | 9.65:1 |
| White text | 2.17:1 |
Values
| HEX | #3FC599 |
| RGB | rgb(63, 197, 153) |
| HSL | hsl(160, 54%, 51%) |
| OKLCH | oklch(74% 0.132 166.9) |
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 #3FC599 | 2.17:1 | Fails | Lc -47.1 | Large or bold text, headings |
| Black text on #3FC599 | 9.65:1 | AAA | Lc 61.6 | Content text, not long reading |
| #3FC599 text on white | 2.17:1 | Fails | Lc 42.4 | Non-text elements, placeholder text |
| #3FC599 text on black | 9.65:1 | AAA | Lc -59.8 | 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
#EFF8F4
oklch(97.1% 0.011 167.8)
-
Step 100
100
#DCEFE6
oklch(93.6% 0.023 165.8)
-
Step 200
200
#BDE3D3
oklch(88.4% 0.045 167.9)
-
Step 300
300
#8BD2B5
oklch(80.9% 0.083 166.8)
-
Step 400
400 (this color)
#3FC599
oklch(74% 0.132 166.9)
-
Step 500
500
#00A279
oklch(63.2% 0.13 167)
-
Step 600
600
#008865
oklch(55.6% 0.114 167)
-
Step 700
700
#007254
oklch(49% 0.101 166.9)
-
Step 800
800
#005E45
oklch(42.8% 0.088 167.1)
-
Step 900
900
#004E39
oklch(37.6% 0.077 167.4)
-
Step 950
950
#002F21
oklch(27.1% 0.055 167.3)
#3FC599 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) | #C0B797 | 0.132 |
| Deuteranopia (no green cones) | #AFAA9C | 0.129 |
| Tritanopia (no blue cones) | #00C6B9 | 0.045 |
| Achromatopsia (no color) | #B0B0B0 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FC599
#3FC599
oklch(74% 0.132 166.9)
- #E787BB
#E787BB
oklch(74.1% 0.132 347.1)
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 #3FC599, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greenblue #23C48B ΔE 0.024
- Green Blue #01C08D ΔE 0.029
- Medium Aquamarine #66CDAA ΔE 0.043
- Emerald #06D6A0 ΔE 0.046
- Dark Mint #48C072 ΔE 0.048
- Soft Green #6FC276 ΔE 0.049
- Greeny Blue #42B395 ΔE 0.051
- Topaz #13BBAF ΔE 0.052
Use #3FC599 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.