#3874CB#3874CB

#3874CB is a mid, vivid blue. Relative luminance 0.176; OKLCH L 56.4% C 0.149 H 258.0°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#3874CB
RGB	rgb(56, 116, 203)
HSL	hsl(216, 59%, 51%)
HSV	hsv(216, 72%, 80%)
CMYK	cmyk(72.4%, 42.9%, 0%, 20.4%)
CIE-LAB	lab(49.06, 10.13, -50.80)
CIE-LCH	lch(49.06, 51.80, 281.28°)
OKLab	oklab(56.38% -0.031 -0.1453)
OKLCH	oklch(56.38% 0.149 258)
XYZ	xyz(18.6518, 17.6413, 58.9104)
Luminance	0.1764 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3874CB #CB8F38

analogous

#38BECB #3874CB #4538CB

triadic

#3874CB #CB3874 #74CB38

tetradic

#3874CB #CB38BE #CB8F38 #38CB45

square

#3874CB #CB38BE #CB8F38 #38CB45

split-complementary

#3874CB #CB4538 #BECB38

monochromatic

#1C3D6C #29589D #3874CB #6996D8 #99B8E4

Accessibility & contrast

On white

4.64

#3874CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#3874CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3874CB

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3874CB	#FFFFFF	#000000	##FFFFFF
##3874CB	1.00	4.64	4.53	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#497CCE

Deuteranopia (green-blind)

#2F6EC9

Tritanopia (blue-blind)

#008895

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3874cb;
/* rgb */ color: rgb(56, 116, 203);
/* oklch */ color: oklch(56.4% 0.149 258.0);

Tailwind

colors: {
  custom: {
    50: '#819bdb',
    500: '#3874cb',
    950: '#000000',
  },
}

SCSS

$custom: #3874cb;
$custom-light: #819bdb;
$custom-dark: #000000;

JSON

{
  "hex": "#3874cb",
  "rgb": {
    "r": 56,
    "g": 116,
    "b": 203
  },
  "hsl": {
    "h": 215.51,
    "s": 58.566,
    "l": 50.784
  },
  "oklch": {
    "l": 0.56375,
    "c": 0.14855,
    "h": 258
  },
  "luminance": 0.17643
}

Semantic roles & 50–950 ramp

primary

#3874CB

secondary

#D0B58F

accent

#A246E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3874CB

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

Preview Lab → · Contrast checker → · Palette generator →