#6371C8#6371C8

#6371C8 is a mid, vivid blue. Relative luminance 0.186; OKLCH L 57.8% C 0.134 H 274.6°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#6371C8
RGB	rgb(99, 113, 200)
HSL	hsl(232, 48%, 59%)
HSV	hsv(232, 51%, 78%)
CMYK	cmyk(50.5%, 43.5%, 0%, 21.6%)
CIE-LAB	lab(50.25, 18.95, -47.05)
CIE-LCH	lch(50.25, 50.72, 291.93°)
OKLab	oklab(57.83% 0.0106 -0.1335)
OKLCH	oklch(57.83% 0.134 274.6)
XYZ	xyz(21.4727, 18.6317, 57.0972)
Luminance	0.1863 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6371C8 #C8BA63

analogous

#63A3C8 #6371C8 #8763C8

triadic

#6371C8 #C86371 #71C863

tetradic

#6371C8 #C863A3 #C8BA63 #63C887

square

#6371C8 #C863A3 #C8BA63 #63C887

split-complementary

#6371C8 #C88763 #A3C863

monochromatic

#2E3A83 #3E4EB0 #6371C8 #909AD8 #BDC3E8

Accessibility & contrast

On white

4.44

#6371C8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#6371C8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6371C8

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6371C8	#FFFFFF	#000000	##000000
##6371C8	1.00	4.44	4.73	4.73
#FFFFFF	4.44	1.00	21.00	21.00
#000000	4.73	21.00	1.00	1.00
##000000	4.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D7CCB

Deuteranopia (green-blind)

#4374C6

Tritanopia (blue-blind)

#398493

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #6371c8;
/* rgb */ color: rgb(99, 113, 200);
/* oklch */ color: oklch(57.8% 0.134 274.6);

Tailwind

colors: {
  custom: {
    50: '#9599d9',
    500: '#6371c8',
    950: '#000000',
  },
}

SCSS

$custom: #6371c8;
$custom-light: #9599d9;
$custom-dark: #000000;

JSON

{
  "hex": "#6371c8",
  "rgb": {
    "r": 99,
    "g": 113,
    "b": 200
  },
  "hsl": {
    "h": 231.683,
    "s": 47.867,
    "l": 58.627
  },
  "oklch": {
    "l": 0.57825,
    "c": 0.13392,
    "h": 274.6
  },
  "luminance": 0.18633
}

Semantic roles & 50–950 ramp

primary

#6371C8

secondary

#D7D2AF

accent

#C550D7

background

#F9F9FD

surface

#F2F2FA

border

#CCCCD3

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #6371C8

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

Preview Lab → · Contrast checker → · Palette generator →