#3FDCDF
Closest named color: Aqua Blue (#02D8E9). oklch(81.7% 0.126 196.9), rgb(63, 220, 223).
Aa
Black text reads best on this color (12.51:1).
About this color
#3FDCDF is a light, moderately saturated teal or cyan. In OKLCH its lightness is 82%, its chroma 0.126 and its hue 197°. Its hue sits on the cool side of the wheel. The nearest named color is Aqua Blue (#02D8E9), ΔE 0.025 away. Black text reads best on it, at 12.51:1.
| Hue family | Teals and cyans |
| Lightness | light (82%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Aqua Blue (#02D8E9) |
| Black text | 12.51:1 |
| White text | 1.67:1 |
Values
| HEX | #3FDCDF |
| RGB | rgb(63, 220, 223) |
| HSL | hsl(181, 71%, 56%) |
| OKLCH | oklch(81.7% 0.126 196.9) |
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 #3FDCDF | 1.67:1 | Fails | Lc -33.0 | Non-text elements, placeholder text |
| Black text on #3FDCDF | 12.51:1 | AAA | Lc 74.6 | Content text, not long reading |
| #3FDCDF text on white | 1.67:1 | Fails | Lc 29.3 | Dividers and decoration only |
| #3FDCDF text on black | 12.51:1 | AAA | Lc -73.6 | 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
#E9F9F9
oklch(97% 0.017 196.9)
-
Step 100
100
#CFF2F2
oklch(93.6% 0.036 196.5)
-
Step 200
200
#A2E8E9
oklch(88.5% 0.07 197.1)
-
Step 300
300 (this color)
#3FDCDF
oklch(81.7% 0.126 196.9)
-
Step 400
400
#00B7BA
oklch(70.7% 0.12 196.9)
-
Step 500
500
#009DA0
oklch(63.1% 0.107 197.2)
-
Step 600
600
#008486
oklch(55.6% 0.095 196.7)
-
Step 700
700
#006F71
oklch(49.1% 0.084 197)
-
Step 800
800
#005B5D
oklch(42.7% 0.073 197.4)
-
Step 900
900
#004C4D
oklch(37.8% 0.064 196.3)
-
Step 950
950
#002D2E
oklch(27% 0.046 197.1)
#3FDCDF 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) | #CDD2DF | 0.130 |
| Deuteranopia (no green cones) | #B6C1E0 | 0.121 |
| Tritanopia (no blue cones) | #00E3DC | 0.024 |
| Achromatopsia (no color) | #C8C8C8 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FDCDF
#3FDCDF
oklch(81.7% 0.126 196.9)
- #FFA8AB
#FFA8AB
oklch(81.8% 0.103 17.3)
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 #3FDCDF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Blue #02D8E9 ΔE 0.025
- Turquoise #40E0D0 ΔE 0.027
- Medium Turquoise #48D1CC ΔE 0.034
- Dark Turquoise #00CED1 ΔE 0.046
- Seafoam Blue #78D1B6 ΔE 0.060
- Vivid Sky Blue #4CC9F0 ΔE 0.065
- Robin's Egg #6DEDFD ΔE 0.066
- Sky Blue #87CEEB ΔE 0.067
Use #3FDCDF 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.