#3979CF#3979CF

#3979CF is a mid, vivid cyan. Relative luminance 0.191; OKLCH L 57.8% C 0.148 H 256.7°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#3979CF
RGB	rgb(57, 121, 207)
HSL	hsl(214, 61%, 52%)
HSV	hsv(214, 72%, 81%)
CMYK	cmyk(72.5%, 41.5%, 0%, 18.8%)
CIE-LAB	lab(50.74, 8.63, -50.39)
CIE-LCH	lch(50.74, 51.12, 279.72°)
OKLab	oklab(57.77% -0.034 -0.144)
OKLCH	oklch(57.77% 0.148 256.7)
XYZ	xyz(19.7831, 19.0474, 61.6533)
Luminance	0.1905 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3979CF #CF8F39

analogous

#39C4CF #3979CF #4439CF

triadic

#3979CF #CF3979 #79CF39

tetradic

#3979CF #CF39C4 #CF8F39 #39CF44

square

#3979CF #CF39C4 #CF8F39 #39CF44

split-complementary

#3979CF #CF4439 #C4CF39

monochromatic

#1C4072 #285CA3 #3979CF #6A9ADB #9CBCE7

Accessibility & contrast

On white

4.37

#3979CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#3979CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3979CF

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3979CF	#FFFFFF	#000000	##000000
##3979CF	1.00	4.37	4.81	4.81
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5080D2

Deuteranopia (green-blind)

#3672CD

Tritanopia (blue-blind)

#008D9A

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3979cf;
/* rgb */ color: rgb(57, 121, 207);
/* oklch */ color: oklch(57.8% 0.148 256.7);

Tailwind

colors: {
  custom: {
    50: '#829fde',
    500: '#3979cf',
    950: '#000000',
  },
}

SCSS

$custom: #3979cf;
$custom-light: #829fde;
$custom-dark: #000000;

JSON

{
  "hex": "#3979cf",
  "rgb": {
    "r": 57,
    "g": 121,
    "b": 207
  },
  "hsl": {
    "h": 214.4,
    "s": 60.976,
    "l": 51.765
  },
  "oklch": {
    "l": 0.57765,
    "c": 0.14793,
    "h": 256.7
  },
  "luminance": 0.1905
}

Semantic roles & 50–950 ramp

primary

#3979CF

secondary

#D3B791

accent

#A044E4

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3979CF

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

Preview Lab → · Contrast checker → · Palette generator →