#3FCDF3
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(79% 0.128 220), rgb(63, 205, 243).
Aa
Black text reads best on this color (11.23:1).
About this color
#3FCDF3 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 79%, its chroma 0.128 and its hue 220°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.011 away. Black text reads best on it, at 11.23:1.
| Hue family | Teals and cyans |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 11.23:1 |
| White text | 1.86:1 |
Values
| HEX | #3FCDF3 |
| RGB | rgb(63, 205, 243) |
| HSL | hsl(193, 88%, 60%) |
| OKLCH | oklch(79% 0.128 220) |
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 #3FCDF3 | 1.86:1 | Fails | Lc -39.1 | Non-text elements, placeholder text |
| Black text on #3FCDF3 | 11.23:1 | AAA | Lc 69.0 | Content text, not long reading |
| #3FCDF3 text on white | 1.86:1 | Fails | Lc 34.9 | Non-text elements, placeholder text |
| #3FCDF3 text on black | 11.23:1 | AAA | Lc -67.6 | 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
#EAF8FE
oklch(97% 0.017 225.2)
-
Step 100
100
#D0F0FB
oklch(93.5% 0.037 220.5)
-
Step 200
200
#A4E5FA
oklch(88.5% 0.071 219.9)
-
Step 300
300 (this color)
#3FCDF3
oklch(79% 0.128 220)
-
Step 400
400
#00B2D8
oklch(70.7% 0.129 220.4)
-
Step 500
500
#0099B9
oklch(63.1% 0.115 219.7)
-
Step 600
600
#00809C
oklch(55.5% 0.101 220.3)
-
Step 700
700
#006C84
oklch(49.2% 0.09 220.2)
-
Step 800
800
#00586C
oklch(42.6% 0.078 220.2)
-
Step 900
900
#004A5B
oklch(37.8% 0.069 219.8)
-
Step 950
950
#002C37
oklch(27.1% 0.049 219.4)
#3FCDF3 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) | #B6C8F5 | 0.107 |
| Deuteranopia (no green cones) | #9DB6F3 | 0.094 |
| Tritanopia (no blue cones) | #00D9D9 | 0.060 |
| Achromatopsia (no color) | #BEBEBE | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FCDF3
#3FCDF3
oklch(79% 0.128 220)
- #FF9D7B
#FF9D7B
oklch(78.9% 0.127 39.8)
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 #3FCDF3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.011
- Bright Sky Blue #02CCFE ΔE 0.022
- Aqua Blue #02D8E9 ΔE 0.039
- Lightblue #7BC8F6 ΔE 0.043
- Deep Sky Blue #00BFFF ΔE 0.051
- Sky #82CAFC ΔE 0.052
- Sky Blue #87CEEB ΔE 0.053
- Dark Turquoise #00CED1 ΔE 0.056
Use #3FCDF3 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.