#6371CF#6371CF

#6371CF is a mid, vivid blue. Relative luminance 0.190; OKLCH L 58.3% C 0.144 H 274.7°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#6371CF
RGB	rgb(99, 113, 207)
HSL	hsl(232, 53%, 60%)
HSV	hsv(232, 52%, 81%)
CMYK	cmyk(52.2%, 45.4%, 0%, 18.8%)
CIE-LAB	lab(50.65, 21.15, -50.42)
CIE-LCH	lch(50.65, 54.67, 292.76°)
OKLab	oklab(58.25% 0.0117 -0.1434)
OKLCH	oklch(58.25% 0.144 274.7)
XYZ	xyz(22.3096, 18.9665, 61.5047)
Luminance	0.1897 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6371CF #CFC163

analogous

#63A7CF #6371CF #8B63CF

triadic

#6371CF #CF6371 #71CF63

tetradic

#6371CF #CF63A7 #CFC163 #63CF8B

square

#6371CF #CF63A7 #CFC163 #63CF8B

split-complementary

#6371CF #CF8B63 #A7CF63

monochromatic

#2B388C #3A4ABB #6371CF #929CDD #C1C6EC

Accessibility & contrast

On white

4.38

#6371CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#6371CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6371CF

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6371CF	#FFFFFF	#000000	##000000
##6371CF	1.00	4.38	4.79	4.79
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#487DD3

Deuteranopia (green-blind)

#3C74CD

Tritanopia (blue-blind)

#328596

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #6371cf;
/* rgb */ color: rgb(99, 113, 207);
/* oklch */ color: oklch(58.3% 0.144 274.7);

Tailwind

colors: {
  custom: {
    50: '#9699de',
    500: '#6371cf',
    950: '#000000',
  },
}

SCSS

$custom: #6371cf;
$custom-light: #9699de;
$custom-dark: #000000;

JSON

{
  "hex": "#6371cf",
  "rgb": {
    "r": 99,
    "g": 113,
    "b": 207
  },
  "hsl": {
    "h": 232.222,
    "s": 52.941,
    "l": 60
  },
  "oklch": {
    "l": 0.58254,
    "c": 0.14386,
    "h": 274.7
  },
  "luminance": 0.18968
}

Semantic roles & 50–950 ramp

primary

#6371CF

secondary

#DCD6B2

accent

#CA4BDC

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #6371CF

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

Preview Lab → · Contrast checker → · Palette generator →