#3FC7DF
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(76.8% 0.118 212), rgb(63, 199, 223).
Aa
Black text reads best on this color (10.44:1).
About this color
#3FC7DF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 77%, its chroma 0.118 and its hue 212°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.027 away. Black text reads best on it, at 10.44:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 10.44:1 |
| White text | 2.01:1 |
Values
| HEX | #3FC7DF |
| RGB | rgb(63, 199, 223) |
| HSL | hsl(189, 71%, 56%) |
| OKLCH | oklch(76.8% 0.118 212) |
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 #3FC7DF | 2.01:1 | Fails | Lc -43.1 | Non-text elements, placeholder text |
| Black text on #3FC7DF | 10.44:1 | AAA | Lc 65.3 | Content text, not long reading |
| #3FC7DF text on white | 2.01:1 | Fails | Lc 38.6 | Non-text elements, placeholder text |
| #3FC7DF text on black | 10.44:1 | AAA | Lc -63.8 | 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
#EAF9FC
oklch(97.2% 0.016 211)
-
Step 100
100
#D1F0F7
oklch(93.5% 0.034 212.9)
-
Step 200
200
#A7E5F2
oklch(88.4% 0.065 212)
-
Step 300
300 (this color)
#3FC7DF
oklch(76.8% 0.118 212)
-
Step 400
400
#00B4CD
oklch(70.7% 0.123 212.1)
-
Step 500
500
#009AB0
oklch(63% 0.11 212.4)
-
Step 600
600
#008294
oklch(55.7% 0.097 211.6)
-
Step 700
700
#006D7D
oklch(49.1% 0.086 212.3)
-
Step 800
800
#005967
oklch(42.6% 0.075 213)
-
Step 900
900
#004A56
oklch(37.6% 0.066 213)
-
Step 950
950
#002C34
oklch(26.9% 0.047 213.2)
#3FC7DF 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) | #B4C0E0 | 0.109 |
| Deuteranopia (no green cones) | #9EB0DF | 0.099 |
| Tritanopia (no blue cones) | #00D1CE | 0.046 |
| Achromatopsia (no color) | #B7B7B7 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FC7DF
#3FC7DF
oklch(76.8% 0.118 212)
- #F59684
#F59684
oklch(76.7% 0.118 31.5)
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 #3FC7DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.027
- Dark Turquoise #00CED1 ΔE 0.036
- Bright Sky Blue #02CCFE ΔE 0.043
- Aqua Blue #02D8E9 ΔE 0.045
- Medium Turquoise #48D1CC ΔE 0.046
- Lightblue #7BC8F6 ΔE 0.059
- Deep Sky Blue #00BFFF ΔE 0.059
- Sky Blue #87CEEB ΔE 0.064
Use #3FC7DF 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.