#6378CC#6378CC

#6378CC is a mid, vivid blue. Relative luminance 0.204; OKLCH L 59.5% C 0.130 H 271.4°. Best body text is #000000 at 5.09:1 contrast (WCAG AA passes).

Color values

HEX	#6378CC
RGB	rgb(99, 120, 204)
HSL	hsl(228, 51%, 59%)
HSV	hsv(228, 51%, 80%)
CMYK	cmyk(51.5%, 41.2%, 0%, 20%)
CIE-LAB	lab(52.34, 15.93, -46.02)
CIE-LCH	lch(52.34, 48.70, 289.09°)
OKLab	oklab(59.49% 0.0031 -0.1304)
OKLCH	oklch(59.49% 0.13 271.4)
XYZ	xyz(22.7576, 20.4437, 59.8619)
Luminance	0.2044 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6378CC #CCB763

analogous

#63ADCC #6378CC #8363CC

triadic

#6378CC #CC6378 #78CC63

tetradic

#6378CC #CC63AD #CCB763 #63CC83

square

#6378CC #CC63AD #CCB763 #63CC83

split-complementary

#6378CC #CC8363 #ADCC63

monochromatic

#2C3F88 #3C54B6 #6378CC #91A0DB #BFC8EA

Accessibility & contrast

On white

4.13

#6378CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.09

#6378CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6378CC

5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6378CC	#FFFFFF	#000000	##000000
##6378CC	1.00	4.13	5.09	5.09
#FFFFFF	4.13	1.00	21.00	21.00
#000000	5.09	21.00	1.00	1.00
##000000	5.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5682CF

Deuteranopia (green-blind)

#4B79CA

Tritanopia (blue-blind)

#348A98

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #6378cc;
/* rgb */ color: rgb(99, 120, 204);
/* oklch */ color: oklch(59.5% 0.130 271.4);

Tailwind

colors: {
  custom: {
    50: '#969edc',
    500: '#6378cc',
    950: '#000000',
  },
}

SCSS

$custom: #6378cc;
$custom-light: #969edc;
$custom-dark: #000000;

JSON

{
  "hex": "#6378cc",
  "rgb": {
    "r": 99,
    "g": 120,
    "b": 204
  },
  "hsl": {
    "h": 228,
    "s": 50.725,
    "l": 59.412
  },
  "oklch": {
    "l": 0.59489,
    "c": 0.13048,
    "h": 271.4
  },
  "luminance": 0.20445
}

Semantic roles & 50–950 ramp

primary

#6378CC

secondary

#DAD2B1

accent

#BE4EDA

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0E15

muted

#7E7E83

Preview Lab

Preview with #6378CC

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

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