#3979B2#3979B2

#3979B2 is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 56.1% C 0.110 H 248.0°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#3979B2
RGB	rgb(57, 121, 178)
HSL	hsl(208, 51%, 46%)
HSV	hsv(208, 68%, 70%)
CMYK	cmyk(68%, 32%, 0%, 30.2%)
CIE-LAB	lab(49.20, -1.79, -36.19)
CIE-LCH	lch(49.20, 36.24, 267.17°)
OKLab	oklab(56.06% -0.0413 -0.1024)
OKLCH	oklch(56.06% 0.11 248)
XYZ	xyz(16.5576, 17.7572, 44.6657)
Luminance	0.1776 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3979B2 #B27239

analogous

#39B2AE #3979B2 #393DB2

triadic

#3979B2 #B23979 #79B239

tetradic

#3979B2 #AE39B2 #B27239 #3DB239

square

#3979B2 #AE39B2 #B27239 #3DB239

split-complementary

#3979B2 #B2393D #B2AE39

monochromatic

#1B3A55 #2A5984 #3979B2 #5D97CB #8BB5DA

Accessibility & contrast

On white

4.61

#3979B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#3979B2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3979B2

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3979B2	#FFFFFF	#000000	##FFFFFF
##3979B2	1.00	4.61	4.55	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#607BB4

Deuteranopia (green-blind)

#4F70B1

Tritanopia (blue-blind)

#00878D

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3979b2;
/* rgb */ color: rgb(57, 121, 178);
/* oklch */ color: oklch(56.1% 0.110 248.0);

Tailwind

colors: {
  custom: {
    50: '#7d9fc9',
    500: '#3979b2',
    950: '#000000',
  },
}

SCSS

$custom: #3979b2;
$custom-light: #7d9fc9;
$custom-dark: #000000;

JSON

{
  "hex": "#3979b2",
  "rgb": {
    "r": 57,
    "g": 121,
    "b": 178
  },
  "hsl": {
    "h": 208.264,
    "s": 51.489,
    "l": 46.078
  },
  "oklch": {
    "l": 0.56057,
    "c": 0.11044,
    "h": 248
  },
  "luminance": 0.17759
}

Semantic roles & 50–950 ramp

primary

#3979B2

secondary

#C4A182

accent

#904DDB

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3979B2

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

Preview Lab → · Contrast checker → · Palette generator →