#6478DD#6478DD

#6478DD is a mid, vivid blue. Relative luminance 0.214; OKLCH L 60.6% C 0.154 H 272.6°. Best body text is #000000 at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#6478DD
RGB	rgb(100, 120, 221)
HSL	hsl(230, 64%, 63%)
HSV	hsv(230, 55%, 87%)
CMYK	cmyk(54.8%, 45.7%, 0%, 13.3%)
CIE-LAB	lab(53.34, 21.55, -54.04)
CIE-LCH	lch(53.34, 58.18, 291.74°)
OKLab	oklab(60.58% 0.007 -0.1539)
OKLCH	oklch(60.58% 0.154 272.6)
XYZ	xyz(25.0189, 21.3609, 71.1973)
Luminance	0.2136 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6478DD #DDC964

analogous

#64B4DD #6478DD #8D64DD

triadic

#6478DD #DD6478 #78DD64

tetradic

#6478DD #DD64B4 #DDC964 #64DD8D

square

#6478DD #DD64B4 #DDC964 #64DD8D

split-complementary

#6478DD #DD8D64 #B4DD64

monochromatic

#2439A3 #324CD2 #6478DD #96A4E8 #C8CFF3

Accessibility & contrast

On white

3.98

#6478DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.27

#6478DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6478DD

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6478DD	#FFFFFF	#000000	##000000
##6478DD	1.00	3.98	5.27	5.27
#FFFFFF	3.98	1.00	21.00	21.00
#000000	5.27	21.00	1.00	1.00
##000000	5.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A85E1

Deuteranopia (green-blind)

#3B7ADB

Tritanopia (blue-blind)

#228EA0

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #6478dd;
/* rgb */ color: rgb(100, 120, 221);
/* oklch */ color: oklch(60.6% 0.154 272.6);

Tailwind

colors: {
  custom: {
    50: '#999ee8',
    500: '#6478dd',
    950: '#000000',
  },
}

SCSS

$custom: #6478dd;
$custom-light: #999ee8;
$custom-dark: #000000;

JSON

{
  "hex": "#6478dd",
  "rgb": {
    "r": 100,
    "g": 120,
    "b": 221
  },
  "hsl": {
    "h": 230.083,
    "s": 64.021,
    "l": 62.941
  },
  "oklch": {
    "l": 0.60582,
    "c": 0.15408,
    "h": 272.6
  },
  "luminance": 0.21363
}

Semantic roles & 50–950 ramp

primary

#6478DD

secondary

#E4DDB9

accent

#AE1ACC

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #6478DD

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

Preview Lab → · Contrast checker → · Palette generator →