#3979BE#3979BE

#3979BE is a mid, vivid cyan. Relative luminance 0.183; OKLCH L 56.7% C 0.126 H 252.4°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#3979BE
RGB	rgb(57, 121, 190)
HSL	hsl(211, 54%, 48%)
HSV	hsv(211, 70%, 75%)
CMYK	cmyk(70%, 36.3%, 0%, 25.5%)
CIE-LAB	lab(49.81, 2.48, -42.15)
CIE-LCH	lch(49.81, 42.22, 273.37°)
OKLab	oklab(56.74% -0.038 -0.1198)
OKLCH	oklch(56.74% 0.126 252.4)
XYZ	xyz(17.8155, 18.2604, 51.2909)
Luminance	0.1826 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3979BE #BE7E39

analogous

#39BBBE #3979BE #3C39BE

triadic

#3979BE #BE3979 #79BE39

tetradic

#3979BE #BE39BB #BE7E39 #39BE3C

square

#3979BE #BE39BB #BE7E39 #39BE3C

split-complementary

#3979BE #BE3C39 #BBBE39

monochromatic

#1D3D60 #2B5B8F #3979BE #6498D0 #93B7DF

Accessibility & contrast

On white

4.51

#3979BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#3979BE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3979BE

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3979BE	#FFFFFF	#000000	##000000
##3979BE	1.00	4.51	4.65	4.65
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A7DC1

Deuteranopia (green-blind)

#4771BD

Tritanopia (blue-blind)

#008992

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3979be;
/* rgb */ color: rgb(57, 121, 190);
/* oklch */ color: oklch(56.7% 0.126 252.4);

Tailwind

colors: {
  custom: {
    50: '#7f9fd2',
    500: '#3979be',
    950: '#000000',
  },
}

SCSS

$custom: #3979be;
$custom-light: #7f9fd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3979be",
  "rgb": {
    "r": 57,
    "g": 121,
    "b": 190
  },
  "hsl": {
    "h": 211.128,
    "s": 53.846,
    "l": 48.431
  },
  "oklch": {
    "l": 0.56736,
    "c": 0.1257,
    "h": 252.4
  },
  "luminance": 0.18262
}

Semantic roles & 50–950 ramp

primary

#3979BE

secondary

#CAAB89

accent

#974BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3979BE

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

Preview Lab → · Contrast checker → · Palette generator →