#3873BC#3873BC

#3873BC is a mid, vivid cyan. Relative luminance 0.167; OKLCH L 55.2% C 0.130 H 255.1°. Best body text is #FFFFFF at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#3873BC
RGB	rgb(56, 115, 188)
HSL	hsl(213, 54%, 48%)
HSV	hsv(213, 70%, 74%)
CMYK	cmyk(70.2%, 38.8%, 0%, 26.3%)
CIE-LAB	lab(47.92, 5.29, -44.00)
CIE-LCH	lch(47.92, 44.32, 276.85°)
OKLab	oklab(55.21% -0.0333 -0.1253)
OKLCH	oklch(55.21% 0.13 255.1)
XYZ	xyz(16.8354, 16.7313, 49.9094)
Luminance	0.1673 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3873BC #BC8138

analogous

#38B5BC #3873BC #3F38BC

triadic

#3873BC #BC3873 #73BC38

tetradic

#3873BC #BC38B5 #BC8138 #38BC3F

square

#3873BC #BC38B5 #BC8138 #38BC3F

split-complementary

#3873BC #BC3F38 #B5BC38

monochromatic

#1C395E #2A568D #3873BC #6193D0 #90B3DE

Accessibility & contrast

On white

4.83

#3873BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.35

#3873BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3873BC

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3873BC	#FFFFFF	#000000	##FFFFFF
##3873BC	1.00	4.83	4.35	4.83
#FFFFFF	4.83	1.00	21.00	1.00
#000000	4.35	21.00	1.00	21.00
##FFFFFF	4.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5278BF

Deuteranopia (green-blind)

#3E6CBB

Tritanopia (blue-blind)

#00848E

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3873bc;
/* rgb */ color: rgb(56, 115, 188);
/* oklch */ color: oklch(55.2% 0.130 255.1);

Tailwind

colors: {
  custom: {
    50: '#7e9ad0',
    500: '#3873bc',
    950: '#000000',
  },
}

SCSS

$custom: #3873bc;
$custom-light: #7e9ad0;
$custom-dark: #000000;

JSON

{
  "hex": "#3873bc",
  "rgb": {
    "r": 56,
    "g": 115,
    "b": 188
  },
  "hsl": {
    "h": 213.182,
    "s": 54.098,
    "l": 47.843
  },
  "oklch": {
    "l": 0.55214,
    "c": 0.1297,
    "h": 255.1
  },
  "luminance": 0.16733
}

Semantic roles & 50–950 ramp

primary

#3873BC

secondary

#C9AB87

accent

#9C4ADD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3873BC

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

Preview Lab → · Contrast checker → · Palette generator →