#4378C5#4378C5

#4378C5 is a mid, vivid blue. Relative luminance 0.187; OKLCH L 57.3% C 0.132 H 257.8°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#4378C5
RGB	rgb(67, 120, 197)
HSL	hsl(216, 53%, 52%)
HSV	hsv(216, 66%, 77%)
CMYK	cmyk(66%, 39.1%, 0%, 22.7%)
CIE-LAB	lab(50.28, 7.20, -45.39)
CIE-LCH	lch(50.28, 45.96, 279.01°)
OKLab	oklab(57.33% -0.0279 -0.1292)
OKLCH	oklch(57.33% 0.132 257.8)
XYZ	xyz(19.1056, 18.6556, 55.4065)
Luminance	0.1866 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4378C5 #C59043

analogous

#43B9C5 #4378C5 #4F43C5

triadic

#4378C5 #C54378 #78C543

tetradic

#4378C5 #C543B9 #C59043 #43C54F

square

#4378C5 #C543B9 #C59043 #43C54F

split-complementary

#4378C5 #C54F43 #B9C543

monochromatic

#21406C #305C9B #4378C5 #729AD3 #A1BBE2

Accessibility & contrast

On white

4.44

#4378C5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#4378C5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4378C5

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4378C5	#FFFFFF	#000000	##000000
##4378C5	1.00	4.44	4.73	4.73
#FFFFFF	4.44	1.00	21.00	21.00
#000000	4.73	21.00	1.00	1.00
##000000	4.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#557EC8

Deuteranopia (green-blind)

#4272C3

Tritanopia (blue-blind)

#008A95

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #4378c5;
/* rgb */ color: rgb(67, 120, 197);
/* oklch */ color: oklch(57.3% 0.132 257.8);

Tailwind

colors: {
  custom: {
    50: '#849ed7',
    500: '#4378c5',
    950: '#000000',
  },
}

SCSS

$custom: #4378c5;
$custom-light: #849ed7;
$custom-dark: #000000;

JSON

{
  "hex": "#4378c5",
  "rgb": {
    "r": 67,
    "g": 120,
    "b": 197
  },
  "hsl": {
    "h": 215.538,
    "s": 52.846,
    "l": 51.765
  },
  "oklch": {
    "l": 0.57332,
    "c": 0.13217,
    "h": 257.8
  },
  "luminance": 0.18657
}

Semantic roles & 50–950 ramp

primary

#4378C5

secondary

#CEB795

accent

#A14CDC

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E14

muted

#7D7E83

Preview Lab

Preview with #4378C5

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

Preview Lab → · Contrast checker → · Palette generator →