#6375B5#6375B5

#6375B5 is a mid, moderate blue. Relative luminance 0.187; OKLCH L 57.6% C 0.101 H 271.0°. Best body text is #000000 at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#6375B5
RGB	rgb(99, 117, 181)
HSL	hsl(227, 36%, 55%)
HSV	hsv(227, 45%, 71%)
CMYK	cmyk(45.3%, 35.4%, 0%, 29%)
CIE-LAB	lab(50.35, 10.65, -35.98)
CIE-LCH	lch(50.35, 37.52, 286.49°)
OKLab	oklab(57.58% 0.0018 -0.1011)
OKLCH	oklch(57.58% 0.101 271)
XYZ	xyz(19.8448, 18.7103, 46.2729)
Luminance	0.1871 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6375B5 #B5A363

analogous

#639EB5 #6375B5 #7A63B5

triadic

#6375B5 #B56375 #75B563

tetradic

#6375B5 #B5639E #B5A363 #63B57A

square

#6375B5 #B5639E #B5A363 #63B57A

split-complementary

#6375B5 #B57A63 #9EB563

monochromatic

#333F6B #465894 #6375B5 #8D9AC9 #B6BEDC

Accessibility & contrast

On white

4.43

#6375B5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.74

#6375B5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6375B5

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6375B5	#FFFFFF	#000000	##000000
##6375B5	1.00	4.43	4.74	4.74
#FFFFFF	4.43	1.00	21.00	21.00
#000000	4.74	21.00	1.00	1.00
##000000	4.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7CB8

Deuteranopia (green-blind)

#5675B4

Tritanopia (blue-blind)

#46828C

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #6375b5;
/* rgb */ color: rgb(99, 117, 181);
/* oklch */ color: oklch(57.6% 0.101 271.0);

Tailwind

colors: {
  custom: {
    50: '#939ccb',
    500: '#6375b5',
    950: '#000000',
  },
}

SCSS

$custom: #6375b5;
$custom-light: #939ccb;
$custom-dark: #000000;

JSON

{
  "hex": "#6375b5",
  "rgb": {
    "r": 99,
    "g": 117,
    "b": 181
  },
  "hsl": {
    "h": 226.829,
    "s": 35.652,
    "l": 54.902
  },
  "oklch": {
    "l": 0.57575,
    "c": 0.10117,
    "h": 271
  },
  "luminance": 0.18711
}

Semantic roles & 50–950 ramp

primary

#6375B5

secondary

#CBC4A9

accent

#B35CCC

background

#F9F9FC

surface

#F2F2F8

border

#CCCCD1

text

#0D0E13

muted

#7E7E82

Preview Lab

Preview with #6375B5

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

Preview Lab → · Contrast checker → · Palette generator →