#6370BB#6370BB

#6370BB is a mid, moderate blue. Relative luminance 0.178; OKLCH L 56.9% C 0.117 H 274.7°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#6370BB
RGB	rgb(99, 112, 187)
HSL	hsl(231, 39%, 56%)
HSV	hsv(231, 47%, 73%)
CMYK	cmyk(47.1%, 40.1%, 0%, 26.7%)
CIE-LAB	lab(49.29, 15.52, -41.11)
CIE-LCH	lch(49.29, 43.95, 290.69°)
OKLab	oklab(56.86% 0.0095 -0.1161)
OKLCH	oklch(56.86% 0.117 274.7)
XYZ	xyz(19.9066, 17.8277, 49.3962)
Luminance	0.1783 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6370BB #BBAE63

analogous

#639CBB #6370BB #8263BB

triadic

#6370BB #BB6370 #70BB63

tetradic

#6370BB #BB639C #BBAE63 #63BB82

square

#6370BB #BB639C #BBAE63 #63BB82

split-complementary

#6370BB #BB8263 #9CBB63

monochromatic

#323B72 #44519D #6370BB #8E97CE #B8BEE0

Accessibility & contrast

On white

4.60

#6370BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#6370BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #6370BB

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6370BB	#FFFFFF	#000000	##FFFFFF
##6370BB	1.00	4.60	4.57	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5479BE

Deuteranopia (green-blind)

#4C72B9

Tritanopia (blue-blind)

#43808C

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #6370bb;
/* rgb */ color: rgb(99, 112, 187);
/* oklch */ color: oklch(56.9% 0.117 274.7);

Tailwind

colors: {
  custom: {
    50: '#9498d0',
    500: '#6370bb',
    950: '#000000',
  },
}

SCSS

$custom: #6370bb;
$custom-light: #9498d0;
$custom-dark: #000000;

JSON

{
  "hex": "#6370bb",
  "rgb": {
    "r": 99,
    "g": 112,
    "b": 187
  },
  "hsl": {
    "h": 231.136,
    "s": 39.286,
    "l": 56.078
  },
  "oklch": {
    "l": 0.56857,
    "c": 0.11652,
    "h": 274.7
  },
  "luminance": 0.17829
}

Semantic roles & 50–950 ramp

primary

#6370BB

secondary

#CFCAAB

accent

#BE59CF

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0D0D14

muted

#7E7E82

Preview Lab

Preview with #6370BB

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

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