#6377BB#6377BB

#6377BB is a mid, moderate blue. Relative luminance 0.194; OKLCH L 58.3% C 0.107 H 270.4°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#6377BB
RGB	rgb(99, 119, 187)
HSL	hsl(226, 39%, 56%)
HSV	hsv(226, 47%, 73%)
CMYK	cmyk(47.1%, 36.4%, 0%, 26.7%)
CIE-LAB	lab(51.19, 11.26, -38.11)
CIE-LCH	lch(51.19, 39.74, 286.46°)
OKLab	oklab(58.32% 0.0007 -0.1073)
OKLCH	oklch(58.32% 0.107 270.4)
XYZ	xyz(20.7092, 19.4329, 49.6638)
Luminance	0.1943 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6377BB #BBA763

analogous

#63A3BB #6377BB #7B63BB

triadic

#6377BB #BB6377 #77BB63

tetradic

#6377BB #BB63A3 #BBA763 #63BB7B

square

#6377BB #BB63A3 #BBA763 #63BB7B

split-complementary

#6377BB #BB7B63 #A3BB63

monochromatic

#324072 #44589D #6377BB #8E9CCE #B8C1E0

Accessibility & contrast

On white

4.30

#6377BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#6377BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6377BB

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6377BB	#FFFFFF	#000000	##000000
##6377BB	1.00	4.30	4.89	4.89
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7EBE

Deuteranopia (green-blind)

#5576B9

Tritanopia (blue-blind)

#418590

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #6377bb;
/* rgb */ color: rgb(99, 119, 187);
/* oklch */ color: oklch(58.3% 0.107 270.4);

Tailwind

colors: {
  custom: {
    50: '#949ed0',
    500: '#6377bb',
    950: '#000000',
  },
}

SCSS

$custom: #6377bb;
$custom-light: #949ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#6377bb",
  "rgb": {
    "r": 99,
    "g": 119,
    "b": 187
  },
  "hsl": {
    "h": 226.364,
    "s": 39.286,
    "l": 56.078
  },
  "oklch": {
    "l": 0.58322,
    "c": 0.10735,
    "h": 270.4
  },
  "luminance": 0.19434
}

Semantic roles & 50–950 ramp

primary

#6377BB

secondary

#CFC7AB

accent

#B459CF

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0D0E14

muted

#7E7E82

Preview Lab

Preview with #6377BB

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

Preview Lab → · Contrast checker → · Palette generator →