#3F79C7#3F79C7

#3F79C7 is a mid, vivid cyan. Relative luminance 0.189; OKLCH L 57.5% C 0.135 H 256.5°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#3F79C7
RGB	rgb(63, 121, 199)
HSL	hsl(214, 55%, 51%)
HSV	hsv(214, 68%, 78%)
CMYK	cmyk(68.3%, 39.2%, 0%, 22%)
CIE-LAB	lab(50.51, 6.63, -46.18)
CIE-LCH	lch(50.51, 46.65, 278.18°)
OKLab	oklab(57.5% -0.0315 -0.1315)
OKLCH	oklch(57.5% 0.135 256.5)
XYZ	xyz(19.1923, 18.8530, 56.6493)
Luminance	0.1885 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F79C7 #C78D3F

analogous

#3FBDC7 #3F79C7 #493FC7

triadic

#3F79C7 #C73F79 #79C73F

tetradic

#3F79C7 #C73FBD #C78D3F #3FC749

square

#3F79C7 #C73FBD #C78D3F #3FC749

split-complementary

#3F79C7 #C7493F #BDC73F

monochromatic

#20406C #2D5C9B #3F79C7 #6E9AD5 #9EBBE3

Accessibility & contrast

On white

4.40

#3F79C7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#3F79C7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F79C7

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F79C7	#FFFFFF	#000000	##000000
##3F79C7	1.00	4.40	4.77	4.77
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#557FCA

Deuteranopia (green-blind)

#4172C5

Tritanopia (blue-blind)

#008B96

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3f79c7;
/* rgb */ color: rgb(63, 121, 199);
/* oklch */ color: oklch(57.5% 0.135 256.5);

Tailwind

colors: {
  custom: {
    50: '#839fd8',
    500: '#3f79c7',
    950: '#000000',
  },
}

SCSS

$custom: #3f79c7;
$custom-light: #839fd8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f79c7",
  "rgb": {
    "r": 63,
    "g": 121,
    "b": 199
  },
  "hsl": {
    "h": 214.412,
    "s": 54.839,
    "l": 51.373
  },
  "oklch": {
    "l": 0.57504,
    "c": 0.13525,
    "h": 256.5
  },
  "luminance": 0.18855
}

Semantic roles & 50–950 ramp

primary

#3F79C7

secondary

#CFB593

accent

#9F4ADE

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E14

muted

#7D7E83

Preview Lab

Preview with #3F79C7

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

Preview Lab → · Contrast checker → · Palette generator →