#3FB1E4#3FB1E4

#3FB1E4 is a light, vivid cyan. Relative luminance 0.381; OKLCH L 71.8% C 0.124 H 231.8°. Best body text is #000000 at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#3FB1E4
RGB	rgb(63, 177, 228)
HSL	hsl(199, 75%, 57%)
HSV	hsv(199, 72%, 89%)
CMYK	cmyk(72.4%, 22.4%, 0%, 10.6%)
CIE-LAB	lab(68.09, -15.47, -34.77)
CIE-LCH	lch(68.09, 38.06, 246.02°)
OKLab	oklab(71.82% -0.077 -0.0977)
OKLCH	oklch(71.82% 0.124 231.8)
XYZ	xyz(31.7700, 38.0988, 79.0632)
Luminance	0.3810 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3FB1E4 #E4723F

analogous

#3FE4C4 #3FB1E4 #3F5FE4

triadic

#3FB1E4 #E43FB1 #B1E43F

tetradic

#3FB1E4 #C43FE4 #E4723F #5FE43F

square

#3FB1E4 #C43FE4 #E4723F #5FE43F

split-complementary

#3FB1E4 #E43F5F #E4C43F

monochromatic

#156D94 #1C94C9 #3FB1E4 #75C7EC #AADDF3

Accessibility & contrast

On white

2.44

#3FB1E4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.62

#3FB1E4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #3FB1E4

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3FB1E4	#FFFFFF	#000000	##000000
##3FB1E4	1.00	2.44	8.62	8.62
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.62	21.00	1.00	1.00
##000000	8.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#97AFE6

Deuteranopia (green-blind)

#819FE3

Tritanopia (blue-blind)

#00BFC2

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #3fb1e4;
/* rgb */ color: rgb(63, 177, 228);
/* oklch */ color: oklch(71.8% 0.124 231.8);

Tailwind

colors: {
  custom: {
    50: '#89c8ec',
    500: '#3fb1e4',
    950: '#000000',
  },
}

SCSS

$custom: #3fb1e4;
$custom-light: #89c8ec;
$custom-dark: #000000;

JSON

{
  "hex": "#3fb1e4",
  "rgb": {
    "r": 63,
    "g": 177,
    "b": 228
  },
  "hsl": {
    "h": 198.545,
    "s": 75.342,
    "l": 57.059
  },
  "oklch": {
    "l": 0.7182,
    "c": 0.12441,
    "h": 231.8
  },
  "luminance": 0.38102
}

Semantic roles & 50–950 ramp

primary

#3FB1E4

secondary

#E1B39E

accent

#7036F2

background

#F9FCFE

surface

#F1F8FD

border

#CBD1D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #3FB1E4

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →