#3979B5#3979B5

#3979B5 is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 56.2% C 0.114 H 249.3°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#3979B5
RGB	rgb(57, 121, 181)
HSL	hsl(209, 52%, 47%)
HSV	hsv(209, 69%, 71%)
CMYK	cmyk(68.5%, 33.1%, 0%, 29%)
CIE-LAB	lab(49.35, -0.73, -37.69)
CIE-LCH	lch(49.35, 37.70, 268.89°)
OKLab	oklab(56.22% -0.0404 -0.1068)
OKLCH	oklch(56.22% 0.114 249.3)
XYZ	xyz(16.8621, 17.8790, 46.2694)
Luminance	0.1788 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3979B5 #B57539

analogous

#39B5B3 #3979B5 #393BB5

triadic

#3979B5 #B53979 #79B539

tetradic

#3979B5 #B339B5 #B57539 #3BB539

square

#3979B5 #B339B5 #B57539 #3BB539

split-complementary

#3979B5 #B5393B #B5B339

monochromatic

#1C3B58 #2A5A86 #3979B5 #5F97CD #8DB5DB

Accessibility & contrast

On white

4.59

#3979B5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#3979B5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3979B5

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3979B5	#FFFFFF	#000000	##FFFFFF
##3979B5	1.00	4.59	4.58	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.58	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7CB8

Deuteranopia (green-blind)

#4D70B4

Tritanopia (blue-blind)

#00878F

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3979b5;
/* rgb */ color: rgb(57, 121, 181);
/* oklch */ color: oklch(56.2% 0.114 249.3);

Tailwind

colors: {
  custom: {
    50: '#7d9fcb',
    500: '#3979b5',
    950: '#000000',
  },
}

SCSS

$custom: #3979b5;
$custom-light: #7d9fcb;
$custom-dark: #000000;

JSON

{
  "hex": "#3979b5",
  "rgb": {
    "r": 57,
    "g": 121,
    "b": 181
  },
  "hsl": {
    "h": 209.032,
    "s": 52.101,
    "l": 46.667
  },
  "oklch": {
    "l": 0.56223,
    "c": 0.11419,
    "h": 249.3
  },
  "luminance": 0.17881
}

Semantic roles & 50–950 ramp

primary

#3979B5

secondary

#C6A484

accent

#924CDC

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3979B5

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

Preview Lab → · Contrast checker → · Palette generator →