#3879BC#3879BC

#3879BC is a mid, vivid cyan. Relative luminance 0.181; OKLCH L 56.6% C 0.123 H 251.5°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#3879BC
RGB	rgb(56, 121, 188)
HSL	hsl(210, 54%, 48%)
HSV	hsv(210, 70%, 74%)
CMYK	cmyk(70.2%, 35.6%, 0%, 26.3%)
CIE-LAB	lab(49.67, 1.61, -41.22)
CIE-LCH	lch(49.67, 41.26, 272.24°)
OKLab	oklab(56.58% -0.0392 -0.1171)
OKLCH	oklch(56.58% 0.124 251.5)
XYZ	xyz(17.5420, 18.1445, 50.1449)
Luminance	0.1815 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3879BC #BC7B38

analogous

#38BBBC #3879BC #3938BC

triadic

#3879BC #BC3879 #79BC38

tetradic

#3879BC #BC38BB #BC7B38 #38BC39

square

#3879BC #BC38BB #BC7B38 #38BC39

split-complementary

#3879BC #BC3938 #BBBC38

monochromatic

#1C3C5E #2A5B8D #3879BC #6198D0 #90B7DE

Accessibility & contrast

On white

4.54

#3879BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#3879BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3879BC

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3879BC	#FFFFFF	#000000	##000000
##3879BC	1.00	4.54	4.63	4.63
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B7DBF

Deuteranopia (green-blind)

#4870BB

Tritanopia (blue-blind)

#008991

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3879bc;
/* rgb */ color: rgb(56, 121, 188);
/* oklch */ color: oklch(56.6% 0.123 251.5);

Tailwind

colors: {
  custom: {
    50: '#7e9fd0',
    500: '#3879bc',
    950: '#000000',
  },
}

SCSS

$custom: #3879bc;
$custom-light: #7e9fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3879bc",
  "rgb": {
    "r": 56,
    "g": 121,
    "b": 188
  },
  "hsl": {
    "h": 210.455,
    "s": 54.098,
    "l": 47.843
  },
  "oklch": {
    "l": 0.56583,
    "c": 0.1235,
    "h": 251.5
  },
  "luminance": 0.18146
}

Semantic roles & 50–950 ramp

primary

#3879BC

secondary

#C9A887

accent

#954ADD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3879BC

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

Preview Lab → · Contrast checker → · Palette generator →