#3FDCDA
Closest named color: Turquoise (#40E0D0). oklch(81.6% 0.126 193.7), rgb(63, 220, 218).
Aa
Black text reads best on this color (12.46:1).
About this color
#3FDCDA is a light, moderately saturated teal or cyan. In OKLCH its lightness is 82%, its chroma 0.126 and its hue 194°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise (#40E0D0), ΔE 0.021 away. Black text reads best on it, at 12.46:1.
| Hue family | Teals and cyans |
| Lightness | light (82%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Turquoise (#40E0D0) |
| Black text | 12.46:1 |
| White text | 1.68:1 |
Values
| HEX | #3FDCDA |
| RGB | rgb(63, 220, 218) |
| HSL | hsl(179, 69%, 55%) |
| OKLCH | oklch(81.6% 0.126 193.7) |
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 #3FDCDA | 1.68:1 | Fails | Lc -33.2 | Non-text elements, placeholder text |
| Black text on #3FDCDA | 12.46:1 | AAA | Lc 74.3 | Content text, not long reading |
| #3FDCDA text on white | 1.68:1 | Fails | Lc 29.5 | Dividers and decoration only |
| #3FDCDA text on black | 12.46:1 | AAA | Lc -73.4 | 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
#CFF2F1
oklch(93.6% 0.036 194.4)
-
Step 200
200
#A2E8E6
oklch(88.4% 0.07 193.7)
-
Step 300
300 (this color)
#3FDCDA
oklch(81.6% 0.126 193.7)
-
Step 400
400
#00B8B6
oklch(70.8% 0.121 193.4)
-
Step 500
500
#009D9C
oklch(63% 0.108 194)
-
Step 600
600
#008483
oklch(55.5% 0.095 193.8)
-
Step 700
700
#006F6E
oklch(49% 0.084 193.7)
-
Step 800
800
#005B5A
oklch(42.6% 0.073 193.5)
-
Step 900
900
#004C4B
oklch(37.7% 0.064 193.2)
-
Step 950
950
#002D2D
oklch(26.9% 0.046 194.8)
#3FDCDA 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) | #CED1DA | 0.132 |
| Deuteranopia (no green cones) | #B7C0DB | 0.124 |
| Tritanopia (no blue cones) | #00E3DB | 0.021 |
| Achromatopsia (no color) | #C7C7C7 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FDCDA
#3FDCDA
oklch(81.6% 0.126 193.7)
- #FFA6AE
#FFA6AE
oklch(81.5% 0.106 13.8)
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 #3FDCDA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise #40E0D0 ΔE 0.021
- Aqua Blue #02D8E9 ΔE 0.030
- Medium Turquoise #48D1CC ΔE 0.031
- Dark Turquoise #00CED1 ΔE 0.045
- Seafoam Blue #78D1B6 ΔE 0.054
- Aqua Marine #2EE8BB ΔE 0.064
- Medium Aquamarine #66CDAA ΔE 0.066
- Tiffany Blue #94D2BD ΔE 0.067
Use #3FDCDA 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.