#6378B9#6378B9

#6378B9 is a mid, moderate blue. Relative luminance 0.196; OKLCH L 58.4% C 0.103 H 269.4°. Best body text is #000000 at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#6378B9
RGB	rgb(99, 120, 185)
HSL	hsl(225, 38%, 56%)
HSV	hsv(225, 46%, 73%)
CMYK	cmyk(46.5%, 35.1%, 0%, 27.5%)
CIE-LAB	lab(51.37, 10.04, -36.68)
CIE-LCH	lch(51.37, 38.03, 285.31°)
OKLab	oklab(58.43% -0.001 -0.1032)
OKLCH	oklch(58.43% 0.103 269.4)
XYZ	xyz(20.6162, 19.5872, 48.5839)
Luminance	0.1959 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6378B9 #B9A463

analogous

#63A3B9 #6378B9 #7963B9

triadic

#6378B9 #B96378 #78B963

tetradic

#6378B9 #B963A3 #B9A463 #63B979

square

#6378B9 #B963A3 #B9A463 #63B979

split-complementary

#6378B9 #B97963 #A3B963

monochromatic

#324170 #455A9A #6378B9 #8D9DCC #B7C1DF

Accessibility & contrast

On white

4.27

#6378B9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.92

#6378B9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6378B9

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6378B9	#FFFFFF	#000000	##000000
##6378B9	1.00	4.27	4.92	4.92
#FFFFFF	4.27	1.00	21.00	21.00
#000000	4.92	21.00	1.00	1.00
##000000	4.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#607EBC

Deuteranopia (green-blind)

#5877B8

Tritanopia (blue-blind)

#438690

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #6378b9;
/* rgb */ color: rgb(99, 120, 185);
/* oklch */ color: oklch(58.4% 0.103 269.4);

Tailwind

colors: {
  custom: {
    50: '#949ece',
    500: '#6378b9',
    950: '#000000',
  },
}

SCSS

$custom: #6378b9;
$custom-light: #949ece;
$custom-dark: #000000;

JSON

{
  "hex": "#6378b9",
  "rgb": {
    "r": 99,
    "g": 120,
    "b": 185
  },
  "hsl": {
    "h": 225.349,
    "s": 38.053,
    "l": 55.686
  },
  "oklch": {
    "l": 0.58427,
    "c": 0.10319,
    "h": 269.4
  },
  "luminance": 0.19588
}

Semantic roles & 50–950 ramp

primary

#6378B9

secondary

#CEC5AA

accent

#B25ACE

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0D0E13

muted

#7E7E82

Preview Lab

Preview with #6378B9

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

Preview Lab → · Contrast checker → · Palette generator →