#6377DD#6377DD

#6377DD is a mid, vivid blue. Relative luminance 0.211; OKLCH L 60.3% C 0.156 H 272.6°. Best body text is #000000 at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#6377DD
RGB	rgb(99, 119, 221)
HSL	hsl(230, 64%, 63%)
HSV	hsv(230, 55%, 87%)
CMYK	cmyk(55.2%, 46.2%, 0%, 13.3%)
CIE-LAB	lab(53.02, 21.95, -54.55)
CIE-LCH	lch(53.02, 58.81, 291.92°)
OKLab	oklab(60.32% 0.007 -0.1555)
OKLCH	oklch(60.32% 0.156 272.6)
XYZ	xyz(24.7893, 21.0650, 71.1523)
Luminance	0.2107 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6377DD #DDC963

analogous

#63B4DD #6377DD #8C63DD

triadic

#6377DD #DD6377 #77DD63

tetradic

#6377DD #DD63B4 #DDC963 #63DD8C

square

#6377DD #DD63B4 #DDC963 #63DD8C

split-complementary

#6377DD #DD8C63 #B4DD63

monochromatic

#2338A2 #314BD2 #6377DD #95A3E8 #C7CFF3

Accessibility & contrast

On white

4.03

#6377DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.21

#6377DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6377DD

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6377DD	#FFFFFF	#000000	##000000
##6377DD	1.00	4.03	5.21	5.21
#FFFFFF	4.03	1.00	21.00	21.00
#000000	5.21	21.00	1.00	1.00
##000000	5.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4884E1

Deuteranopia (green-blind)

#387ADB

Tritanopia (blue-blind)

#1E8E9F

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #6377dd;
/* rgb */ color: rgb(99, 119, 221);
/* oklch */ color: oklch(60.3% 0.156 272.6);

Tailwind

colors: {
  custom: {
    50: '#989de8',
    500: '#6377dd',
    950: '#000000',
  },
}

SCSS

$custom: #6377dd;
$custom-light: #989de8;
$custom-dark: #000000;

JSON

{
  "hex": "#6377dd",
  "rgb": {
    "r": 99,
    "g": 119,
    "b": 221
  },
  "hsl": {
    "h": 230.164,
    "s": 64.211,
    "l": 62.745
  },
  "oklch": {
    "l": 0.60321,
    "c": 0.15563,
    "h": 272.6
  },
  "luminance": 0.21067
}

Semantic roles & 50–950 ramp

primary

#6377DD

secondary

#E4DDB8

accent

#AF19CC

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #6377DD

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

Preview Lab → · Contrast checker → · Palette generator →