#3873B0#3873B0

#3873B0 is a mid, moderate cyan. Relative luminance 0.162; OKLCH L 54.5% C 0.114 H 251.4°. Best body text is #FFFFFF at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#3873B0
RGB	rgb(56, 115, 176)
HSL	hsl(211, 52%, 45%)
HSV	hsv(211, 68%, 69%)
CMYK	cmyk(68.2%, 34.7%, 0%, 31%)
CIE-LAB	lab(47.28, 0.96, -38.06)
CIE-LCH	lch(47.28, 38.07, 271.45°)
OKLab	oklab(54.51% -0.0364 -0.1079)
OKLCH	oklch(54.51% 0.114 251.4)
XYZ	xyz(15.5952, 16.2352, 43.3777)
Luminance	0.1624 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3873B0 #B07538

analogous

#38AFB0 #3873B0 #3938B0

triadic

#3873B0 #B03873 #73B038

tetradic

#3873B0 #B038AF #B07538 #38B039

square

#3873B0 #B038AF #B07538 #38B039

split-complementary

#3873B0 #B03938 #AFB038

monochromatic

#1A3653 #295582 #3873B0 #5B92CB #89B1D9

Accessibility & contrast

On white

4.94

#3873B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.25

#3873B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3873B0

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3873B0	#FFFFFF	#000000	##FFFFFF
##3873B0	1.00	4.94	4.25	4.94
#FFFFFF	4.94	1.00	21.00	1.00
#000000	4.25	21.00	1.00	21.00
##FFFFFF	4.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5876B3

Deuteranopia (green-blind)

#476BAF

Tritanopia (blue-blind)

#008189

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3873b0;
/* rgb */ color: rgb(56, 115, 176);
/* oklch */ color: oklch(54.5% 0.114 251.4);

Tailwind

colors: {
  custom: {
    50: '#7c9ac8',
    500: '#3873b0',
    950: '#000000',
  },
}

SCSS

$custom: #3873b0;
$custom-light: #7c9ac8;
$custom-dark: #000000;

JSON

{
  "hex": "#3873b0",
  "rgb": {
    "r": 56,
    "g": 115,
    "b": 176
  },
  "hsl": {
    "h": 210.5,
    "s": 51.724,
    "l": 45.49
  },
  "oklch": {
    "l": 0.54507,
    "c": 0.11392,
    "h": 251.4
  },
  "luminance": 0.16237
}

Semantic roles & 50–950 ramp

primary

#3873B0

secondary

#C4A280

accent

#954DDB

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3873B0

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

Preview Lab → · Contrast checker → · Palette generator →