#3979B9#3979B9

#3979B9 is a mid, moderate cyan. Relative luminance 0.180; OKLCH L 56.4% C 0.119 H 250.8°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#3979B9
RGB	rgb(57, 121, 185)
HSL	hsl(210, 53%, 47%)
HSV	hsv(210, 69%, 73%)
CMYK	cmyk(69.2%, 34.6%, 0%, 27.5%)
CIE-LAB	lab(49.55, 0.69, -39.68)
CIE-LCH	lch(49.55, 39.69, 271.00°)
OKLab	oklab(56.45% -0.0393 -0.1126)
OKLCH	oklch(56.45% 0.119 250.8)
XYZ	xyz(17.2784, 18.0456, 48.4621)
Luminance	0.1805 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3979B9 #B97939

analogous

#39B9B9 #3979B9 #3939B9

triadic

#3979B9 #B93979 #79B939

tetradic

#3979B9 #B939B9 #B97939 #39B939

square

#3979B9 #B939B9 #B97939 #39B939

split-complementary

#3979B9 #B93939 #B9B939

monochromatic

#1C3C5B #2B5A8A #3979B9 #6198CE #90B6DD

Accessibility & contrast

On white

4.56

#3979B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#3979B9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3979B9

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3979B9	#FFFFFF	#000000	##000000
##3979B9	1.00	4.56	4.61	4.61
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7CBC

Deuteranopia (green-blind)

#4A70B8

Tritanopia (blue-blind)

#008890

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3979b9;
/* rgb */ color: rgb(57, 121, 185);
/* oklch */ color: oklch(56.4% 0.119 250.8);

Tailwind

colors: {
  custom: {
    50: '#7e9fce',
    500: '#3979b9',
    950: '#000000',
  },
}

SCSS

$custom: #3979b9;
$custom-light: #7e9fce;
$custom-dark: #000000;

JSON

{
  "hex": "#3979b9",
  "rgb": {
    "r": 57,
    "g": 121,
    "b": 185
  },
  "hsl": {
    "h": 210,
    "s": 52.893,
    "l": 47.451
  },
  "oklch": {
    "l": 0.56448,
    "c": 0.11926,
    "h": 250.8
  },
  "luminance": 0.18047
}

Semantic roles & 50–950 ramp

primary

#3979B9

secondary

#C8A786

accent

#944BDC

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3979B9

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

Preview Lab → · Contrast checker → · Palette generator →