#4357CB#4357CB

#4357CB is a mid, vivid blue. Relative luminance 0.123; OKLCH L 50.9% C 0.180 H 271.1°. Best body text is #FFFFFF at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#4357CB
RGB	rgb(67, 87, 203)
HSL	hsl(231, 57%, 53%)
HSV	hsv(231, 67%, 80%)
CMYK	cmyk(67%, 57.1%, 0%, 20.4%)
CIE-LAB	lab(41.72, 30.12, -62.61)
CIE-LCH	lch(41.72, 69.48, 295.69°)
OKLab	oklab(50.92% 0.0035 -0.1802)
OKLCH	oklch(50.92% 0.18 271.1)
XYZ	xyz(16.4988, 12.3199, 57.9968)
Luminance	0.1232 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4357CB #CBB743

analogous

#439BCB #4357CB #7343CB

triadic

#4357CB #CB4357 #57CB43

tetradic

#4357CB #CB439B #CBB743 #43CB73

square

#4357CB #CB439B #CBB743 #43CB73

split-complementary

#4357CB #CB7343 #9BCB43

monochromatic

#202C74 #2D3FA4 #4357CB #7382D8 #A3ADE6

Accessibility & contrast

On white

6.06

#4357CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#4357CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4357CB

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4357CB	#FFFFFF	#000000	##FFFFFF
##4357CB	1.00	6.06	3.46	6.06
#FFFFFF	6.06	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069CF

Deuteranopia (green-blind)

#005CC9

Tritanopia (blue-blind)

#007388

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #4357cb;
/* rgb */ color: rgb(67, 87, 203);
/* oklch */ color: oklch(50.9% 0.180 271.1);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#4357cb",
  "rgb": {
    "r": 67,
    "g": 87,
    "b": 203
  },
  "hsl": {
    "h": 231.176,
    "s": 56.667,
    "l": 52.941
  },
  "oklch": {
    "l": 0.50923,
    "c": 0.18028,
    "h": 271.1
  },
  "luminance": 0.12321
}

Semantic roles & 50–950 ramp

primary

#4357CB

secondary

#D2CA98

accent

#CA48E0

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0D0B15

muted

#7D7C83

Preview Lab

Preview with #4357CB

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

Preview Lab → · Contrast checker → · Palette generator →