#3FCDA4
Closest named color: Medium Aquamarine (#66CDAA). oklch(76.3% 0.134 169.5), rgb(63, 205, 164).
Aa
Black text reads best on this color (10.47:1).
About this color
#3FCDA4 is a medium-light, moderately saturated green. In OKLCH its lightness is 76%, its chroma 0.134 and its hue 169°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.028 away. Black text reads best on it, at 10.47:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.134) |
| Temperature | in between |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 10.47:1 |
| White text | 2.00:1 |
Values
| HEX | #3FCDA4 |
| RGB | rgb(63, 205, 164) |
| HSL | hsl(163, 59%, 53%) |
| OKLCH | oklch(76.3% 0.134 169.5) |
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 #3FCDA4 | 2.00:1 | Fails | Lc -42.9 | Non-text elements, placeholder text |
| Black text on #3FCDA4 | 10.47:1 | AAA | Lc 65.5 | Content text, not long reading |
| #3FCDA4 text on white | 2.00:1 | Fails | Lc 38.4 | Non-text elements, placeholder text |
| #3FCDA4 text on black | 10.47:1 | AAA | Lc -63.9 | 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 300.
-
Step 50
50
#EAFAF3
oklch(97.1% 0.019 167.9)
-
Step 100
100
#D2F3E6
oklch(93.7% 0.039 169.7)
-
Step 200
200
#A8EAD1
oklch(88.6% 0.075 169.1)
-
Step 300
300 (this color)
#3FCDA4
oklch(76.3% 0.134 169.5)
-
Step 400
400
#00BC92
oklch(70.7% 0.141 169.4)
-
Step 500
500
#00A17D
oklch(63% 0.125 169.6)
-
Step 600
600
#008869
oklch(55.7% 0.111 169.5)
-
Step 700
700
#007257
oklch(49.1% 0.098 169.1)
-
Step 800
800
#005E47
oklch(42.8% 0.086 168.9)
-
Step 900
900
#004E3B
oklch(37.7% 0.075 169.6)
-
Step 950
950
#002F22
oklch(27.1% 0.054 168.9)
#3FCDA4 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) | #C7BFA2 | 0.136 |
| Deuteranopia (no green cones) | #B4B1A7 | 0.131 |
| Tritanopia (no blue cones) | #00CEC1 | 0.041 |
| Achromatopsia (no color) | #B7B7B7 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FCDA4
#3FCDA4
oklch(76.3% 0.134 169.5)
- #F18DBF
#F18DBF
oklch(76.3% 0.134 349.4)
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 #3FCDA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.028
- Emerald #06D6A0 ΔE 0.030
- Greenblue #23C48B ΔE 0.042
- Green Blue #01C08D ΔE 0.050
- Seafoam Blue #78D1B6 ΔE 0.052
- Medium Turquoise #48D1CC ΔE 0.056
- Pale Teal #82CBB2 ΔE 0.057
- Soft Green #6FC276 ΔE 0.059
Use #3FCDA4 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.