#3979CB#3979CB

#3979CB is a mid, vivid cyan. Relative luminance 0.189; OKLCH L 57.5% C 0.143 H 255.9°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#3979CB
RGB	rgb(57, 121, 203)
HSL	hsl(214, 58%, 51%)
HSV	hsv(214, 72%, 80%)
CMYK	cmyk(71.9%, 40.4%, 0%, 20.4%)
CIE-LAB	lab(50.52, 7.18, -48.47)
CIE-LCH	lch(50.52, 49.00, 278.42°)
OKLab	oklab(57.52% -0.0348 -0.1383)
OKLCH	oklch(57.52% 0.143 255.9)
XYZ	xyz(19.3002, 18.8543, 59.1104)
Luminance	0.1886 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3979CB #CB8B39

analogous

#39C2CB #3979CB #4239CB

triadic

#3979CB #CB3979 #79CB39

tetradic

#3979CB #CB39C2 #CB8B39 #39CB42

square

#3979CB #CB39C2 #CB8B39 #39CB42

split-complementary

#3979CB #CB4239 #C2CB39

monochromatic

#1D406D #295C9D #3979CB #699AD8 #9ABBE4

Accessibility & contrast

On white

4.40

#3979CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#3979CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3979CB

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3979CB	#FFFFFF	#000000	##000000
##3979CB	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)

#5280CE

Deuteranopia (green-blind)

#3B72C9

Tritanopia (blue-blind)

#008C98

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3979cb;
/* rgb */ color: rgb(57, 121, 203);
/* oklch */ color: oklch(57.5% 0.143 255.9);

Tailwind

colors: {
  custom: {
    50: '#819fdb',
    500: '#3979cb',
    950: '#000000',
  },
}

SCSS

$custom: #3979cb;
$custom-light: #819fdb;
$custom-dark: #000000;

JSON

{
  "hex": "#3979cb",
  "rgb": {
    "r": 57,
    "g": 121,
    "b": 203
  },
  "hsl": {
    "h": 213.699,
    "s": 58.4,
    "l": 50.98
  },
  "oklch": {
    "l": 0.57516,
    "c": 0.14266,
    "h": 255.9
  },
  "luminance": 0.18856
}

Semantic roles & 50–950 ramp

primary

#3979CB

secondary

#D0B490

accent

#9D46E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3979CB

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

Preview Lab → · Contrast checker → · Palette generator →