#3FCEEE
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(79% 0.125 216.4), rgb(63, 206, 238).
Aa
Black text reads best on this color (11.27:1).
About this color
#3FCEEE is a light, moderately saturated teal or cyan. In OKLCH its lightness is 79%, its chroma 0.125 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.016 away. Black text reads best on it, at 11.27:1.
| Hue family | Teals and cyans |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 11.27:1 |
| White text | 1.86:1 |
Values
| HEX | #3FCEEE |
| RGB | rgb(63, 206, 238) |
| HSL | hsl(191, 84%, 59%) |
| OKLCH | oklch(79% 0.125 216.4) |
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 #3FCEEE | 1.86:1 | Fails | Lc -38.9 | Non-text elements, placeholder text |
| Black text on #3FCEEE | 11.27:1 | AAA | Lc 69.1 | Content text, not long reading |
| #3FCEEE text on white | 1.86:1 | Fails | Lc 34.8 | Non-text elements, placeholder text |
| #3FCEEE text on black | 11.27:1 | AAA | Lc -67.8 | 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
#EAF9FD
oklch(97.2% 0.017 215.5)
-
Step 100
100
#D0F1FA
oklch(93.7% 0.036 216)
-
Step 200
200
#A4E5F7
oklch(88.4% 0.07 216.8)
-
Step 300
300 (this color)
#3FCEEE
oklch(79% 0.125 216.4)
-
Step 400
400
#00B3D3
oklch(70.7% 0.126 216.7)
-
Step 500
500
#009AB5
oklch(63.2% 0.112 216)
-
Step 600
600
#008198
oklch(55.6% 0.099 216.1)
-
Step 700
700
#006C80
oklch(49% 0.087 216.4)
-
Step 800
800
#00596A
oklch(42.8% 0.076 216.6)
-
Step 900
900
#004A58
oklch(37.7% 0.067 215.8)
-
Step 950
950
#002C35
oklch(27% 0.048 215.4)
#3FCEEE 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) | #B8C8F0 | 0.109 |
| Deuteranopia (no green cones) | #A1B6EE | 0.100 |
| Tritanopia (no blue cones) | #00D9D8 | 0.053 |
| Achromatopsia (no color) | #BEBEBE | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FCEEE
#3FCEEE
oklch(79% 0.125 216.4)
- #FF9D82
#FF9D82
oklch(79% 0.124 36.2)
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 #3FCEEE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.016
- Bright Sky Blue #02CCFE ΔE 0.028
- Aqua Blue #02D8E9 ΔE 0.032
- Lightblue #7BC8F6 ΔE 0.047
- Dark Turquoise #00CED1 ΔE 0.048
- Sky Blue #87CEEB ΔE 0.053
- Medium Turquoise #48D1CC ΔE 0.053
- Sky #82CAFC ΔE 0.056
Use #3FCEEE 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.