#4378CE#4378CE

#4378CE is a mid, vivid blue. Relative luminance 0.191; OKLCH L 57.9% C 0.144 H 259.6°. Best body text is #000000 at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#4378CE
RGB	rgb(67, 120, 206)
HSL	hsl(217, 59%, 54%)
HSV	hsv(217, 67%, 81%)
CMYK	cmyk(67.5%, 41.7%, 0%, 19.2%)
CIE-LAB	lab(50.78, 10.37, -49.74)
CIE-LCH	lch(50.78, 50.81, 281.78°)
OKLab	oklab(57.88% -0.026 -0.1419)
OKLCH	oklch(57.88% 0.144 259.6)
XYZ	xyz(20.1678, 19.0804, 61.0006)
Luminance	0.1908 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4378CE #CE9943

analogous

#43BECE #4378CE #5343CE

triadic

#4378CE #CE4378 #78CE43

tetradic

#4378CE #CE43BE #CE9943 #43CE53

square

#4378CE #CE43BE #CE9943 #43CE53

split-complementary

#4378CE #CE5343 #BECE43

monochromatic

#1F4177 #2C5BA8 #4378CE #749BDB #A4BEE7

Accessibility & contrast

On white

4.36

#4378CE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.82

#4378CE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4378CE

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4378CE	#FFFFFF	#000000	##000000
##4378CE	1.00	4.36	4.82	4.82
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.82	21.00	1.00	1.00
##000000	4.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5080D1

Deuteranopia (green-blind)

#3973CC

Tritanopia (blue-blind)

#008C99

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #4378ce;
/* rgb */ color: rgb(67, 120, 206);
/* oklch */ color: oklch(57.9% 0.144 259.6);

Tailwind

colors: {
  custom: {
    50: '#869edd',
    500: '#4378ce',
    950: '#000000',
  },
}

SCSS

$custom: #4378ce;
$custom-light: #869edd;
$custom-dark: #000000;

JSON

{
  "hex": "#4378ce",
  "rgb": {
    "r": 67,
    "g": 120,
    "b": 206
  },
  "hsl": {
    "h": 217.122,
    "s": 58.65,
    "l": 53.529
  },
  "oklch": {
    "l": 0.57882,
    "c": 0.14428,
    "h": 259.6
  },
  "luminance": 0.19082
}

Semantic roles & 50–950 ramp

primary

#4378CE

secondary

#D4BD99

accent

#A646E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4378CE

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

Preview Lab → · Contrast checker → · Palette generator →