#6378DD#6378DD

#6378DD is a mid, vivid blue. Relative luminance 0.213; OKLCH L 60.5% C 0.154 H 272.2°. Best body text is #000000 at 5.26:1 contrast (WCAG AA passes).

Color values

HEX	#6378DD
RGB	rgb(99, 120, 221)
HSL	hsl(230, 64%, 63%)
HSV	hsv(230, 55%, 87%)
CMYK	cmyk(55.2%, 45.7%, 0%, 13.3%)
CIE-LAB	lab(53.28, 21.34, -54.14)
CIE-LCH	lch(53.28, 58.19, 291.52°)
OKLab	oklab(60.52% 0.0059 -0.1542)
OKLCH	oklch(60.52% 0.154 272.2)
XYZ	xyz(24.9089, 21.3043, 71.1921)
Luminance	0.2131 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6378DD #DDC863

analogous

#63B5DD #6378DD #8B63DD

triadic

#6378DD #DD6378 #78DD63

tetradic

#6378DD #DD63B5 #DDC863 #63DD8B

square

#6378DD #DD63B5 #DDC863 #63DD8B

split-complementary

#6378DD #DD8B63 #B5DD63

monochromatic

#2339A2 #314DD2 #6378DD #95A3E8 #C7CFF3

Accessibility & contrast

On white

3.99

#6378DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.26

#6378DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6378DD

5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6378DD	#FFFFFF	#000000	##000000
##6378DD	1.00	3.99	5.26	5.26
#FFFFFF	3.99	1.00	21.00	21.00
#000000	5.26	21.00	1.00	1.00
##000000	5.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A85E1

Deuteranopia (green-blind)

#3A7ADB

Tritanopia (blue-blind)

#1E8EA0

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #6378dd;
/* rgb */ color: rgb(99, 120, 221);
/* oklch */ color: oklch(60.5% 0.154 272.2);

Tailwind

colors: {
  custom: {
    50: '#989ee8',
    500: '#6378dd',
    950: '#000000',
  },
}

SCSS

$custom: #6378dd;
$custom-light: #989ee8;
$custom-dark: #000000;

JSON

{
  "hex": "#6378dd",
  "rgb": {
    "r": 99,
    "g": 120,
    "b": 221
  },
  "hsl": {
    "h": 229.672,
    "s": 64.211,
    "l": 62.745
  },
  "oklch": {
    "l": 0.60519,
    "c": 0.15435,
    "h": 272.2
  },
  "luminance": 0.21306
}

Semantic roles & 50–950 ramp

primary

#6378DD

secondary

#E4DCB8

accent

#AD19CC

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #6378DD

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

Preview Lab → · Contrast checker → · Palette generator →