#4378C8#4378C8

#4378C8 is a mid, vivid blue. Relative luminance 0.188; OKLCH L 57.5% C 0.136 H 258.5°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#4378C8
RGB	rgb(67, 120, 200)
HSL	hsl(216, 55%, 52%)
HSV	hsv(216, 67%, 78%)
CMYK	cmyk(66.5%, 40%, 0%, 21.6%)
CIE-LAB	lab(50.45, 8.25, -46.85)
CIE-LCH	lch(50.45, 47.57, 279.99°)
OKLab	oklab(57.51% -0.0272 -0.1335)
OKLCH	oklch(57.51% 0.136 258.5)
XYZ	xyz(19.4528, 18.7944, 57.2349)
Luminance	0.1880 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4378C8 #C89343

analogous

#43BBC8 #4378C8 #5043C8

triadic

#4378C8 #C84378 #78C843

tetradic

#4378C8 #C843BB #C89343 #43C850

square

#4378C8 #C843BB #C89343 #43C850

split-complementary

#4378C8 #C85043 #BBC843

monochromatic

#214070 #2F5B9F #4378C8 #729AD6 #A2BCE4

Accessibility & contrast

On white

4.41

#4378C8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#4378C8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4378C8

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4378C8	#FFFFFF	#000000	##000000
##4378C8	1.00	4.41	4.76	4.76
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#547FCB

Deuteranopia (green-blind)

#4072C6

Tritanopia (blue-blind)

#008A96

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #4378c8;
/* rgb */ color: rgb(67, 120, 200);
/* oklch */ color: oklch(57.5% 0.136 258.5);

Tailwind

colors: {
  custom: {
    50: '#859ed9',
    500: '#4378c8',
    950: '#000000',
  },
}

SCSS

$custom: #4378c8;
$custom-light: #859ed9;
$custom-dark: #000000;

JSON

{
  "hex": "#4378c8",
  "rgb": {
    "r": 67,
    "g": 120,
    "b": 200
  },
  "hsl": {
    "h": 216.09,
    "s": 54.733,
    "l": 52.353
  },
  "oklch": {
    "l": 0.57513,
    "c": 0.1362,
    "h": 258.5
  },
  "luminance": 0.18796
}

Semantic roles & 50–950 ramp

primary

#4378C8

secondary

#D0B996

accent

#A34ADE

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4378C8

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

Preview Lab → · Contrast checker → · Palette generator →