#6357CB#6357CB

#6357CB is a mid, vivid blue. Relative luminance 0.138; OKLCH L 53.1% C 0.173 H 283.5°. Best body text is #FFFFFF at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#6357CB
RGB	rgb(99, 87, 203)
HSL	hsl(246, 53%, 57%)
HSV	hsv(246, 57%, 80%)
CMYK	cmyk(51.2%, 57.1%, 0%, 20.4%)
CIE-LAB	lab(43.92, 35.78, -58.94)
CIE-LCH	lch(43.92, 68.95, 301.26°)
OKLab	oklab(53.12% 0.0404 -0.1686)
OKLCH	oklch(53.12% 0.173 283.5)
XYZ	xyz(19.3300, 13.7798, 58.1296)
Luminance	0.1378 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6357CB #BFCB57

analogous

#5785CB #6357CB #9D57CB

triadic

#6357CB #CB6357 #57CB63

tetradic

#6357CB #CB5785 #BFCB57 #57CB9D

square

#6357CB #CB5785 #BFCB57 #57CB9D

split-complementary

#6357CB #CB9D57 #85CB57

monochromatic

#312880 #4336AF #6357CB #8E86D9 #BAB4E8

Accessibility & contrast

On white

5.59

#6357CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#6357CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6357CB

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6357CB	#FFFFFF	#000000	##FFFFFF
##6357CB	1.00	5.59	3.76	5.59
#FFFFFF	5.59	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BCF

Deuteranopia (green-blind)

#0064C9

Tritanopia (blue-blind)

#3A7288

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #6357cb;
/* rgb */ color: rgb(99, 87, 203);
/* oklch */ color: oklch(53.1% 0.173 283.5);

Tailwind

colors: {
  custom: {
    50: '#9787dc',
    500: '#6357cb',
    950: '#000000',
  },
}

SCSS

$custom: #6357cb;
$custom-light: #9787dc;
$custom-dark: #000000;

JSON

{
  "hex": "#6357cb",
  "rgb": {
    "r": 99,
    "g": 87,
    "b": 203
  },
  "hsl": {
    "h": 246.207,
    "s": 52.727,
    "l": 56.863
  },
  "oklch": {
    "l": 0.53119,
    "c": 0.1734,
    "h": 283.5
  },
  "luminance": 0.13781
}

Semantic roles & 50–950 ramp

primary

#6357CB

secondary

#D2D7A7

accent

#DC4CCD

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #6357CB

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

Preview Lab → · Contrast checker → · Palette generator →