#3873B3#3873B3

#3873B3 is a mid, moderate cyan. Relative luminance 0.164; OKLCH L 54.7% C 0.118 H 252.4°. Best body text is #FFFFFF at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#3873B3
RGB	rgb(56, 115, 179)
HSL	hsl(211, 52%, 46%)
HSV	hsv(211, 69%, 70%)
CMYK	cmyk(68.7%, 35.8%, 0%, 29.8%)
CIE-LAB	lab(47.44, 2.04, -39.55)
CIE-LCH	lch(47.44, 39.61, 272.95°)
OKLab	oklab(54.68% -0.0356 -0.1123)
OKLCH	oklch(54.68% 0.118 252.4)
XYZ	xyz(15.8953, 16.3552, 44.9583)
Luminance	0.1636 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3873B3 #B37838

analogous

#38B0B3 #3873B3 #3B38B3

triadic

#3873B3 #B33873 #73B338

tetradic

#3873B3 #B338B0 #B37838 #38B33B

square

#3873B3 #B338B0 #B37838 #38B33B

split-complementary

#3873B3 #B33B38 #B0B338

monochromatic

#1B3756 #295584 #3873B3 #5C92CC #8BB1DB

Accessibility & contrast

On white

4.92

#3873B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.27

#3873B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3873B3

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3873B3	#FFFFFF	#000000	##FFFFFF
##3873B3	1.00	4.92	4.27	4.92
#FFFFFF	4.92	1.00	21.00	1.00
#000000	4.27	21.00	1.00	21.00
##FFFFFF	4.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5677B6

Deuteranopia (green-blind)

#456BB2

Tritanopia (blue-blind)

#00828A

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3873b3;
/* rgb */ color: rgb(56, 115, 179);
/* oklch */ color: oklch(54.7% 0.118 252.4);

Tailwind

colors: {
  custom: {
    50: '#7c9aca',
    500: '#3873b3',
    950: '#000000',
  },
}

SCSS

$custom: #3873b3;
$custom-light: #7c9aca;
$custom-dark: #000000;

JSON

{
  "hex": "#3873b3",
  "rgb": {
    "r": 56,
    "g": 115,
    "b": 179
  },
  "hsl": {
    "h": 211.22,
    "s": 52.34,
    "l": 46.078
  },
  "oklch": {
    "l": 0.5468,
    "c": 0.11783,
    "h": 252.4
  },
  "luminance": 0.16357
}

Semantic roles & 50–950 ramp

primary

#3873B3

secondary

#C5A582

accent

#974CDC

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3873B3

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

Preview Lab → · Contrast checker → · Palette generator →