#3FCBA3
Closest named color: Medium Aquamarine (#66CDAA). oklch(75.8% 0.132 169.7), rgb(63, 203, 163).
Aa
Black text reads best on this color (10.28:1).
About this color
#3FCBA3 is a medium-light, moderately saturated green. In OKLCH its lightness is 76%, its chroma 0.132 and its hue 170°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.030 away. Black text reads best on it, at 10.28:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.132) |
| Temperature | in between |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 10.28:1 |
| White text | 2.04:1 |
Values
| HEX | #3FCBA3 |
| RGB | rgb(63, 203, 163) |
| HSL | hsl(163, 57%, 52%) |
| OKLCH | oklch(75.8% 0.132 169.7) |
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 #3FCBA3 | 2.04:1 | Fails | Lc -43.9 | Non-text elements, placeholder text |
| Black text on #3FCBA3 | 10.28:1 | AAA | Lc 64.6 | Content text, not long reading |
| #3FCBA3 text on white | 2.04:1 | Fails | Lc 39.4 | Non-text elements, placeholder text |
| #3FCBA3 text on black | 10.28:1 | AAA | Lc -63.0 | 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
#DBEFE7
oklch(93.5% 0.024 169.9)
-
Step 200
200
#BCE3D4
oklch(88.4% 0.046 169.9)
-
Step 300
300
#89D2B8
oklch(80.8% 0.082 169.8)
-
Step 400
400 (this color)
#3FCBA3
oklch(75.8% 0.132 169.7)
-
Step 500
500
#00A17D
oklch(63% 0.125 169.6)
-
Step 600
600
#008869
oklch(55.7% 0.111 169.5)
-
Step 700
700
#007258
oklch(49.1% 0.097 169.9)
-
Step 800
800
#005E48
oklch(42.9% 0.085 169.8)
-
Step 900
900
#004E3B
oklch(37.7% 0.075 169.6)
-
Step 950
950
#002F22
oklch(27.1% 0.054 168.9)
#3FCBA3 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) | #C5BDA1 | 0.135 |
| Deuteranopia (no green cones) | #B3B0A6 | 0.130 |
| Tritanopia (no blue cones) | #00CCC0 | 0.041 |
| Achromatopsia (no color) | #B5B5B5 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FCBA3
#3FCBA3
oklch(75.8% 0.132 169.7)
- #EE8CBC
#EE8CBC
oklch(75.7% 0.131 349.9)
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 #3FCBA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.030
- Emerald #06D6A0 ΔE 0.035
- Greenblue #23C48B ΔE 0.038
- Green Blue #01C08D ΔE 0.046
- Seafoam Blue #78D1B6 ΔE 0.055
- Soft Green #6FC276 ΔE 0.057
- Medium Turquoise #48D1CC ΔE 0.058
- Topaz #13BBAF ΔE 0.058
Use #3FCBA3 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.