#4357CC#4357CC

#4357CC is a mid, vivid blue. Relative luminance 0.124; OKLCH L 51.0% C 0.182 H 271.1°. Best body text is #FFFFFF at 6.05:1 contrast (WCAG AA passes).

Color values

HEX	#4357CC
RGB	rgb(67, 87, 204)
HSL	hsl(231, 57%, 53%)
HSV	hsv(231, 67%, 80%)
CMYK	cmyk(67.2%, 57.4%, 0%, 20%)
CIE-LAB	lab(41.79, 30.47, -63.06)
CIE-LCH	lch(41.79, 70.04, 295.79°)
OKLab	oklab(51% 0.0036 -0.1816)
OKLCH	oklch(51% 0.182 271.1)
XYZ	xyz(16.6183, 12.3678, 58.6265)
Luminance	0.1237 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4357CC #CCB843

analogous

#439BCC #4357CC #7343CC

triadic

#4357CC #CC4357 #57CC43

tetradic

#4357CC #CC439B #CCB843 #43CC73

square

#4357CC #CC439B #CCB843 #43CC73

split-complementary

#4357CC #CC7343 #9BCC43

monochromatic

#202C75 #2D3EA5 #4357CC #7382D9 #A3ADE6

Accessibility & contrast

On white

6.05

#4357CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#4357CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4357CC

6.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4357CC	#FFFFFF	#000000	##FFFFFF
##4357CC	1.00	6.05	3.47	6.05
#FFFFFF	6.05	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069D0

Deuteranopia (green-blind)

#005DCA

Tritanopia (blue-blind)

#007489

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #4357cc;
/* rgb */ color: rgb(67, 87, 204);
/* oklch */ color: oklch(51.0% 0.182 271.1);

Tailwind

colors: {
  custom: {
    50: '#8786dc',
    500: '#4357cc',
    950: '#000000',
  },
}

SCSS

$custom: #4357cc;
$custom-light: #8786dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4357cc",
  "rgb": {
    "r": 67,
    "g": 87,
    "b": 204
  },
  "hsl": {
    "h": 231.241,
    "s": 57.322,
    "l": 53.137
  },
  "oklch": {
    "l": 0.51002,
    "c": 0.18162,
    "h": 271.1
  },
  "luminance": 0.12369
}

Semantic roles & 50–950 ramp

primary

#4357CC

secondary

#D3CA98

accent

#CA47E1

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0D0B15

muted

#7D7C83

Preview Lab

Preview with #4357CC

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

Preview Lab → · Contrast checker → · Palette generator →