#3FC59F
Closest named color: Greenblue (#23C48B). oklch(74.2% 0.128 170.1), rgb(63, 197, 159).
Aa
Black text reads best on this color (9.69:1).
About this color
#3FC59F is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.128 and its hue 170°. Its hue sits on the cool side of the wheel. The nearest named color is Greenblue (#23C48B), ΔE 0.032 away. Black text reads best on it, at 9.69:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Greenblue (#23C48B) |
| Black text | 9.69:1 |
| White text | 2.16:1 |
Values
| HEX | #3FC59F |
| RGB | rgb(63, 197, 159) |
| HSL | hsl(163, 54%, 51%) |
| OKLCH | oklch(74.2% 0.128 170.1) |
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 #3FC59F | 2.16:1 | Fails | Lc -46.9 | Large or bold text, headings |
| Black text on #3FC59F | 9.69:1 | AAA | Lc 61.8 | Content text, not long reading |
| #3FC59F text on white | 2.16:1 | Fails | Lc 42.2 | Non-text elements, placeholder text |
| #3FC59F text on black | 9.69:1 | AAA | Lc -60.0 | Content text, not long reading |
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
#DCEFE7
oklch(93.6% 0.023 168.7)
-
Step 200
200
#BDE3D5
oklch(88.5% 0.044 170.9)
-
Step 300
300
#8BD2B9
oklch(81% 0.08 170.1)
-
Step 400
400 (this color)
#3FC59F
oklch(74.2% 0.128 170.1)
-
Step 500
500
#00A17E
oklch(63.1% 0.125 170.2)
-
Step 600
600
#008769
oklch(55.5% 0.11 170.1)
-
Step 700
700
#007258
oklch(49.1% 0.097 169.9)
-
Step 800
800
#005D48
oklch(42.6% 0.084 170.6)
-
Step 900
900
#004E3B
oklch(37.7% 0.075 169.6)
-
Step 950
950
#002F22
oklch(27.1% 0.054 168.9)
#3FC59F 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) | #C0B89D | 0.131 |
| Deuteranopia (no green cones) | #ADABA2 | 0.125 |
| Tritanopia (no blue cones) | #00C6BA | 0.038 |
| Achromatopsia (no color) | #B0B0B0 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FC59F
#3FC59F
oklch(74.2% 0.128 170.1)
- #E788B7
#E788B7
oklch(74.1% 0.128 349.6)
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 #3FC59F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greenblue #23C48B ΔE 0.032
- Green Blue #01C08D ΔE 0.035
- Medium Aquamarine #66CDAA ΔE 0.040
- Topaz #13BBAF ΔE 0.046
- Emerald #06D6A0 ΔE 0.049
- Greeny Blue #42B395 ΔE 0.050
- Soft Green #6FC276 ΔE 0.055
- Dark Mint #48C072 ΔE 0.057
Use #3FC59F 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.