#4378DC#4378DC

#4378DC is a mid, vivid blue. Relative luminance 0.198; OKLCH L 58.8% C 0.163 H 261.7°. Best body text is #000000 at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#4378DC
RGB	rgb(67, 120, 220)
HSL	hsl(219, 69%, 56%)
HSV	hsv(219, 70%, 86%)
CMYK	cmyk(69.5%, 45.5%, 0%, 13.7%)
CIE-LAB	lab(51.60, 15.36, -56.36)
CIE-LCH	lch(51.60, 58.41, 285.24°)
OKLab	oklab(58.78% -0.0234 -0.1614)
OKLCH	oklch(58.78% 0.163 261.7)
XYZ	xyz(21.9449, 19.7913, 70.3598)
Luminance	0.1979 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4378DC #DCA743

analogous

#43C4DC #4378DC #5B43DC

triadic

#4378DC #DC4378 #78DC43

tetradic

#4378DC #DC43C4 #DCA743 #43DC5B

square

#4378DC #DC43C4 #DCA743 #43DC5B

split-complementary

#4378DC #DC5B43 #C4DC43

monochromatic

#1A418B #2359BE #4378DC #779DE6 #AAC2EF

Accessibility & contrast

On white

4.23

#4378DC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.96

#4378DC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4378DC

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4378DC	#FFFFFF	#000000	##000000
##4378DC	1.00	4.23	4.96	4.96
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.96	21.00	1.00	1.00
##000000	4.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4583E0

Deuteranopia (green-blind)

#2674DA

Tritanopia (blue-blind)

#008F9F

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #4378dc;
/* rgb */ color: rgb(67, 120, 220);
/* oklch */ color: oklch(58.8% 0.163 261.7);

Tailwind

colors: {
  custom: {
    50: '#889ee7',
    500: '#4378dc',
    950: '#000000',
  },
}

SCSS

$custom: #4378dc;
$custom-light: #889ee7;
$custom-dark: #000000;

JSON

{
  "hex": "#4378dc",
  "rgb": {
    "r": 67,
    "g": 120,
    "b": 220
  },
  "hsl": {
    "h": 219.216,
    "s": 68.61,
    "l": 56.275
  },
  "oklch": {
    "l": 0.58778,
    "c": 0.16307,
    "h": 261.7
  },
  "luminance": 0.19794
}

Semantic roles & 50–950 ramp

primary

#4378DC

secondary

#DDC79E

accent

#AF3CEB

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #4378DC

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

Preview Lab → · Contrast checker → · Palette generator →