#3979BF#3979BF

#3979BF is a mid, vivid cyan. Relative luminance 0.183; OKLCH L 56.8% C 0.127 H 252.7°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#3979BF
RGB	rgb(57, 121, 191)
HSL	hsl(211, 54%, 49%)
HSV	hsv(211, 70%, 75%)
CMYK	cmyk(70.2%, 36.6%, 0%, 25.1%)
CIE-LAB	lab(49.86, 2.84, -42.64)
CIE-LCH	lch(49.86, 42.74, 273.81°)
OKLab	oklab(56.79% -0.0377 -0.1213)
OKLCH	oklch(56.79% 0.127 252.7)
XYZ	xyz(17.9252, 18.3043, 51.8685)
Luminance	0.1831 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3979BF #BF7F39

analogous

#39BCBF #3979BF #3C39BF

triadic

#3979BF #BF3979 #79BF39

tetradic

#3979BF #BF39BC #BF7F39 #39BF3C

square

#3979BF #BF39BC #BF7F39 #39BF3C

split-complementary

#3979BF #BF3C39 #BCBF39

monochromatic

#1D3D61 #2B5B90 #3979BF #6498D1 #93B8DF

Accessibility & contrast

On white

4.51

#3979BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#3979BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3979BF

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3979BF	#FFFFFF	#000000	##000000
##3979BF	1.00	4.51	4.66	4.66
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#597DC2

Deuteranopia (green-blind)

#4671BE

Tritanopia (blue-blind)

#008993

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3979bf;
/* rgb */ color: rgb(57, 121, 191);
/* oklch */ color: oklch(56.8% 0.127 252.7);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#3979bf",
  "rgb": {
    "r": 57,
    "g": 121,
    "b": 191
  },
  "hsl": {
    "h": 211.343,
    "s": 54.032,
    "l": 48.627
  },
  "oklch": {
    "l": 0.56794,
    "c": 0.12699,
    "h": 252.7
  },
  "luminance": 0.18306
}

Semantic roles & 50–950 ramp

primary

#3979BF

secondary

#CAAB8A

accent

#974ADD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3979BF

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

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