#4378CD#4378CD

#4378CD is a mid, vivid blue. Relative luminance 0.190; OKLCH L 57.8% C 0.143 H 259.4°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#4378CD
RGB	rgb(67, 120, 205)
HSL	hsl(217, 58%, 53%)
HSV	hsv(217, 67%, 80%)
CMYK	cmyk(67.3%, 41.5%, 0%, 19.6%)
CIE-LAB	lab(50.72, 10.02, -49.26)
CIE-LCH	lch(50.72, 50.26, 281.50°)
OKLab	oklab(57.82% -0.0262 -0.1405)
OKLCH	oklch(57.82% 0.143 259.4)
XYZ	xyz(20.0467, 19.0320, 60.3628)
Luminance	0.1903 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4378CD #CD9843

analogous

#43BDCD #4378CD #5343CD

triadic

#4378CD #CD4378 #78CD43

tetradic

#4378CD #CD43BD #CD9843 #43CD53

square

#4378CD #CD43BD #CD9843 #43CD53

split-complementary

#4378CD #CD5343 #BDCD43

monochromatic

#1F4176 #2C5BA7 #4378CD #739BDA #A4BDE7

Accessibility & contrast

On white

4.37

#4378CD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#4378CD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4378CD

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4378CD	#FFFFFF	#000000	##000000
##4378CD	1.00	4.37	4.81	4.81
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5080D0

Deuteranopia (green-blind)

#3B73CB

Tritanopia (blue-blind)

#008C98

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #4378cd;
/* rgb */ color: rgb(67, 120, 205);
/* oklch */ color: oklch(57.8% 0.143 259.4);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#4378cd",
  "rgb": {
    "r": 67,
    "g": 120,
    "b": 205
  },
  "hsl": {
    "h": 216.957,
    "s": 57.983,
    "l": 53.333
  },
  "oklch": {
    "l": 0.5782,
    "c": 0.14293,
    "h": 259.4
  },
  "luminance": 0.19034
}

Semantic roles & 50–950 ramp

primary

#4378CD

secondary

#D4BD98

accent

#A647E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4378CD

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

Preview Lab → · Contrast checker → · Palette generator →