#6377BC#6377BC

#6377BC is a mid, moderate blue. Relative luminance 0.195; OKLCH L 58.4% C 0.109 H 270.5°. Best body text is #000000 at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#6377BC
RGB	rgb(99, 119, 188)
HSL	hsl(227, 40%, 56%)
HSV	hsv(227, 47%, 74%)
CMYK	cmyk(47.3%, 36.7%, 0%, 26.3%)
CIE-LAB	lab(51.24, 11.56, -38.61)
CIE-LCH	lch(51.24, 40.30, 286.67°)
OKLab	oklab(58.38% 0.001 -0.1088)
OKLCH	oklch(58.38% 0.109 270.5)
XYZ	xyz(20.8166, 19.4759, 50.2295)
Luminance	0.1948 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6377BC #BCA863

analogous

#63A4BC #6377BC #7C63BC

triadic

#6377BC #BC6377 #77BC63

tetradic

#6377BC #BC63A4 #BCA863 #63BC7C

square

#6377BC #BC63A4 #BCA863 #63BC7C

split-complementary

#6377BC #BC7C63 #A4BC63

monochromatic

#314073 #44589E #6377BC #8E9CCE #B9C2E1

Accessibility & contrast

On white

4.29

#6377BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.90

#6377BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6377BC

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6377BC	#FFFFFF	#000000	##000000
##6377BC	1.00	4.29	4.90	4.90
#FFFFFF	4.29	1.00	21.00	21.00
#000000	4.90	21.00	1.00	1.00
##000000	4.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7EBF

Deuteranopia (green-blind)

#5577BA

Tritanopia (blue-blind)

#418590

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #6377bc;
/* rgb */ color: rgb(99, 119, 188);
/* oklch */ color: oklch(58.4% 0.109 270.5);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#6377bc",
  "rgb": {
    "r": 99,
    "g": 119,
    "b": 188
  },
  "hsl": {
    "h": 226.517,
    "s": 39.91,
    "l": 56.275
  },
  "oklch": {
    "l": 0.58377,
    "c": 0.10879,
    "h": 270.5
  },
  "luminance": 0.19477
}

Semantic roles & 50–950 ramp

primary

#6377BC

secondary

#D0C7AB

accent

#B558D0

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0D0E14

muted

#7E7E82

Preview Lab

Preview with #6377BC

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

Preview Lab → · Contrast checker → · Palette generator →