#3FC7ED
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(77.3% 0.125 220.8), rgb(63, 199, 237).
Aa
Black text reads best on this color (10.60:1).
About this color
#3FC7ED is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 77%, its chroma 0.125 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.010 away. Black text reads best on it, at 10.60:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 10.60:1 |
| White text | 1.98:1 |
Values
| HEX | #3FC7ED |
| RGB | rgb(63, 199, 237) |
| HSL | hsl(193, 83%, 59%) |
| OKLCH | oklch(77.3% 0.125 220.8) |
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 #3FC7ED | 1.98:1 | Fails | Lc -42.3 | Non-text elements, placeholder text |
| Black text on #3FC7ED | 10.60:1 | AAA | Lc 66.1 | Content text, not long reading |
| #3FC7ED text on white | 1.98:1 | Fails | Lc 37.9 | Non-text elements, placeholder text |
| #3FC7ED text on black | 10.60:1 | AAA | Lc -64.5 | 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
#EAF8FD
oklch(97% 0.016 221.1)
-
Step 100
100
#D1F0FB
oklch(93.6% 0.036 221.2)
-
Step 200
200
#A6E4FA
oklch(88.4% 0.069 221.9)
-
Step 300
300 (this color)
#3FC7ED
oklch(77.3% 0.125 220.8)
-
Step 400
400
#00B2D9
oklch(70.7% 0.13 221)
-
Step 500
500
#0099BA
oklch(63.2% 0.115 220.3)
-
Step 600
600
#00809D
oklch(55.6% 0.102 221.1)
-
Step 700
700
#006C84
oklch(49.2% 0.09 220.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900
#00495B
oklch(37.6% 0.069 221.4)
-
Step 950
950
#002C37
oklch(27.1% 0.049 219.4)
#3FC7ED 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) | #B0C2EF | 0.103 |
| Deuteranopia (no green cones) | #99B1ED | 0.091 |
| Tritanopia (no blue cones) | #00D3D3 | 0.060 |
| Achromatopsia (no color) | #B8B8B8 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FC7ED
#3FC7ED
oklch(77.3% 0.125 220.8)
- #F99976
#F99976
oklch(77.4% 0.125 40.7)
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 #3FC7ED, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.010
- Bright Sky Blue #02CCFE ΔE 0.026
- Deep Sky Blue #00BFFF ΔE 0.042
- Lightblue #7BC8F6 ΔE 0.047
- Aqua Blue #02D8E9 ΔE 0.050
- Dark Turquoise #00CED1 ΔE 0.054
- Sky #82CAFC ΔE 0.058
- Sky Blue #87CEEB ΔE 0.061
Use #3FC7ED 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.