#6357CC#6357CC

#6357CC is a mid, vivid blue. Relative luminance 0.138; OKLCH L 53.2% C 0.175 H 283.4°. Best body text is #FFFFFF at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#6357CC
RGB	rgb(99, 87, 204)
HSL	hsl(246, 53%, 57%)
HSV	hsv(246, 57%, 80%)
CMYK	cmyk(51.5%, 57.4%, 0%, 20%)
CIE-LAB	lab(43.98, 36.09, -59.41)
CIE-LCH	lch(43.98, 69.51, 301.28°)
OKLab	oklab(53.19% 0.0404 -0.17)
OKLCH	oklch(53.19% 0.175 283.4)
XYZ	xyz(19.4496, 13.8276, 58.7592)
Luminance	0.1383 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6357CC #C0CC57

analogous

#5786CC #6357CC #9E57CC

triadic

#6357CC #CC6357 #57CC63

tetradic

#6357CC #CC5786 #C0CC57 #57CC9E

square

#6357CC #CC5786 #C0CC57 #57CC9E

split-complementary

#6357CC #CC9E57 #86CC57

monochromatic

#312781 #4236B0 #6357CC #8F86DA #BAB5E9

Accessibility & contrast

On white

5.58

#6357CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.77

#6357CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6357CC

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6357CC	#FFFFFF	#000000	##FFFFFF
##6357CC	1.00	5.58	3.77	5.58
#FFFFFF	5.58	1.00	21.00	1.00
#000000	3.77	21.00	1.00	21.00
##FFFFFF	5.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006CD0

Deuteranopia (green-blind)

#0064CA

Tritanopia (blue-blind)

#397289

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #6357cc;
/* rgb */ color: rgb(99, 87, 204);
/* oklch */ color: oklch(53.2% 0.175 283.4);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#6357cc",
  "rgb": {
    "r": 99,
    "g": 87,
    "b": 204
  },
  "hsl": {
    "h": 246.154,
    "s": 53.425,
    "l": 57.059
  },
  "oklch": {
    "l": 0.53192,
    "c": 0.17473,
    "h": 283.4
  },
  "luminance": 0.13829
}

Semantic roles & 50–950 ramp

primary

#6357CC

secondary

#D2D7A8

accent

#DD4BCE

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #6357CC

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

Preview Lab → · Contrast checker → · Palette generator →