#3979BC#3979BC

#3979BC is a mid, vivid cyan. Relative luminance 0.182; OKLCH L 56.6% C 0.123 H 251.8°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#3979BC
RGB	rgb(57, 121, 188)
HSL	hsl(211, 53%, 48%)
HSV	hsv(211, 70%, 74%)
CMYK	cmyk(69.7%, 35.6%, 0%, 26.3%)
CIE-LAB	lab(49.71, 1.76, -41.17)
CIE-LCH	lch(49.71, 41.20, 272.45°)
OKLab	oklab(56.62% -0.0385 -0.1169)
OKLCH	oklch(56.62% 0.123 251.8)
XYZ	xyz(17.5984, 18.1736, 50.1476)
Luminance	0.1817 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3979BC #BC7C39

analogous

#39BABC #3979BC #3B39BC

triadic

#3979BC #BC3979 #79BC39

tetradic

#3979BC #BC39BA #BC7C39 #39BC3B

square

#3979BC #BC39BA #BC7C39 #39BC3B

split-complementary

#3979BC #BC3B39 #BABC39

monochromatic

#1D3D5E #2B5B8D #3979BC #6398D0 #92B7DE

Accessibility & contrast

On white

4.53

#3979BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#3979BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3979BC

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3979BC	#FFFFFF	#000000	##000000
##3979BC	1.00	4.53	4.64	4.64
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B7DBF

Deuteranopia (green-blind)

#4871BB

Tritanopia (blue-blind)

#008991

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3979bc;
/* rgb */ color: rgb(57, 121, 188);
/* oklch */ color: oklch(56.6% 0.123 251.8);

Tailwind

colors: {
  custom: {
    50: '#7e9fd0',
    500: '#3979bc',
    950: '#000000',
  },
}

SCSS

$custom: #3979bc;
$custom-light: #7e9fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3979bc",
  "rgb": {
    "r": 57,
    "g": 121,
    "b": 188
  },
  "hsl": {
    "h": 210.687,
    "s": 53.469,
    "l": 48.039
  },
  "oklch": {
    "l": 0.5662,
    "c": 0.12311,
    "h": 251.8
  },
  "luminance": 0.18175
}

Semantic roles & 50–950 ramp

primary

#3979BC

secondary

#C9A988

accent

#964BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3979BC

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

Preview Lab → · Contrast checker → · Palette generator →