#6378CD#6378CD

#6378CD is a mid, vivid blue. Relative luminance 0.205; OKLCH L 59.5% C 0.132 H 271.4°. Best body text is #000000 at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#6378CD
RGB	rgb(99, 120, 205)
HSL	hsl(228, 51%, 60%)
HSV	hsv(228, 52%, 80%)
CMYK	cmyk(51.7%, 41.5%, 0%, 19.6%)
CIE-LAB	lab(52.39, 16.25, -46.51)
CIE-LCH	lch(52.39, 49.26, 289.26°)
OKLab	oklab(59.55% 0.0033 -0.1319)
OKLCH	oklch(59.55% 0.132 271.4)
XYZ	xyz(22.8779, 20.4919, 60.4956)
Luminance	0.2049 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6378CD #CDB863

analogous

#63ADCD #6378CD #8363CD

triadic

#6378CD #CD6378 #78CD63

tetradic

#6378CD #CD63AD #CDB863 #63CD83

square

#6378CD #CD63AD #CDB863 #63CD83

split-complementary

#6378CD #CD8363 #ADCD63

monochromatic

#2C3F8A #3B54B8 #6378CD #91A0DC #C0C8EB

Accessibility & contrast

On white

4.12

#6378CD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.10

#6378CD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6378CD

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6378CD	#FFFFFF	#000000	##000000
##6378CD	1.00	4.12	5.10	5.10
#FFFFFF	4.12	1.00	21.00	21.00
#000000	5.10	21.00	1.00	1.00
##000000	5.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5582D0

Deuteranopia (green-blind)

#4A79CB

Tritanopia (blue-blind)

#338A98

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #6378cd;
/* rgb */ color: rgb(99, 120, 205);
/* oklch */ color: oklch(59.5% 0.132 271.4);

Tailwind

colors: {
  custom: {
    50: '#969edd',
    500: '#6378cd',
    950: '#000000',
  },
}

SCSS

$custom: #6378cd;
$custom-light: #969edd;
$custom-dark: #000000;

JSON

{
  "hex": "#6378cd",
  "rgb": {
    "r": 99,
    "g": 120,
    "b": 205
  },
  "hsl": {
    "h": 228.113,
    "s": 51.456,
    "l": 59.608
  },
  "oklch": {
    "l": 0.59548,
    "c": 0.1319,
    "h": 271.4
  },
  "luminance": 0.20493
}

Semantic roles & 50–950 ramp

primary

#6378CD

secondary

#DAD2B1

accent

#BF4DDB

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0E15

muted

#7E7E83

Preview Lab

Preview with #6378CD

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

Preview Lab → · Contrast checker → · Palette generator →