#3FC3DF
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(75.8% 0.118 215.1), rgb(63, 195, 223).
Aa
Black text reads best on this color (10.08:1).
About this color
#3FC3DF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 76%, its chroma 0.118 and its hue 215°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.029 away. Black text reads best on it, at 10.08:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 10.08:1 |
| White text | 2.08:1 |
Values
| HEX | #3FC3DF |
| RGB | rgb(63, 195, 223) |
| HSL | hsl(191, 71%, 56%) |
| OKLCH | oklch(75.8% 0.118 215.1) |
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 #3FC3DF | 2.08:1 | Fails | Lc -44.9 | Non-text elements, placeholder text |
| Black text on #3FC3DF | 10.08:1 | AAA | Lc 63.6 | Content text, not long reading |
| #3FC3DF text on white | 2.08:1 | Fails | Lc 40.3 | Non-text elements, placeholder text |
| #3FC3DF text on black | 10.08:1 | AAA | Lc -62.0 | 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 300.
-
Step 50
50
#EAF8FC
oklch(97% 0.016 216.7)
-
Step 100
100
#D1F0F8
oklch(93.5% 0.034 215)
-
Step 200
200
#A8E5F4
oklch(88.6% 0.065 214.6)
-
Step 300
300 (this color)
#3FC3DF
oklch(75.8% 0.118 215.1)
-
Step 400
400
#00B3D1
oklch(70.6% 0.125 215.4)
-
Step 500
500
#009AB3
oklch(63.1% 0.111 214.6)
-
Step 600
600
#008197
oklch(55.5% 0.098 215.2)
-
Step 700
700
#006D7F
oklch(49.2% 0.087 214.3)
-
Step 800
800
#005969
oklch(42.7% 0.076 215.4)
-
Step 900
900
#004A58
oklch(37.7% 0.067 215.8)
-
Step 950
950
#002C35
oklch(27% 0.048 215.4)
#3FC3DF 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) | #AFBDE1 | 0.104 |
| Deuteranopia (no green cones) | #99ADDF | 0.094 |
| Tritanopia (no blue cones) | #00CDCC | 0.048 |
| Achromatopsia (no color) | #B4B4B4 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FC3DF
#3FC3DF
oklch(75.8% 0.118 215.1)
- #F1947D
#F1947D
oklch(75.7% 0.118 34.7)
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 #3FC3DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.029
- Dark Turquoise #00CED1 ΔE 0.044
- Bright Sky Blue #02CCFE ΔE 0.045
- Deep Sky Blue #00BFFF ΔE 0.053
- Aqua Blue #02D8E9 ΔE 0.056
- Medium Turquoise #48D1CC ΔE 0.056
- Lightblue #7BC8F6 ΔE 0.060
- Turquoise Blue #06B1C4 ΔE 0.064
Use #3FC3DF 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.