#3873C8#3873C8

#3873C8 is a mid, vivid blue. Relative luminance 0.173; OKLCH L 56.0% C 0.146 H 257.8°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#3873C8
RGB	rgb(56, 115, 200)
HSL	hsl(215, 57%, 50%)
HSV	hsv(215, 72%, 78%)
CMYK	cmyk(72%, 42.5%, 0%, 21.6%)
CIE-LAB	lab(48.60, 9.66, -49.82)
CIE-LCH	lch(48.60, 50.75, 280.97°)
OKLab	oklab(55.96% -0.0307 -0.1424)
OKLCH	oklch(55.96% 0.146 257.8)
XYZ	xyz(18.1832, 17.2704, 57.0076)
Luminance	0.1727 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3873C8 #C88D38

analogous

#38BBC8 #3873C8 #4538C8

triadic

#3873C8 #C83873 #73C838

tetradic

#3873C8 #C838BB #C88D38 #38C845

square

#3873C8 #C838BB #C88D38 #38C845

split-complementary

#3873C8 #C84538 #BBC838

monochromatic

#1D3C69 #2A5799 #3873C8 #6895D5 #98B6E3

Accessibility & contrast

On white

4.71

#3873C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.45

#3873C8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3873C8

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3873C8	#FFFFFF	#000000	##FFFFFF
##3873C8	1.00	4.71	4.45	4.71
#FFFFFF	4.71	1.00	21.00	1.00
#000000	4.45	21.00	1.00	21.00
##FFFFFF	4.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A7BCB

Deuteranopia (green-blind)

#316DC6

Tritanopia (blue-blind)

#008794

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3873c8;
/* rgb */ color: rgb(56, 115, 200);
/* oklch */ color: oklch(56.0% 0.146 257.8);

Tailwind

colors: {
  custom: {
    50: '#809ad9',
    500: '#3873c8',
    950: '#000000',
  },
}

SCSS

$custom: #3873c8;
$custom-light: #809ad9;
$custom-dark: #000000;

JSON

{
  "hex": "#3873c8",
  "rgb": {
    "r": 56,
    "g": 115,
    "b": 200
  },
  "hsl": {
    "h": 215.417,
    "s": 56.693,
    "l": 50.196
  },
  "oklch": {
    "l": 0.55963,
    "c": 0.14568,
    "h": 257.8
  },
  "luminance": 0.17272
}

Semantic roles & 50–950 ramp

primary

#3873C8

secondary

#CEB48E

accent

#A248E0

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3873C8

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

Preview Lab → · Contrast checker → · Palette generator →