#4578CB#4578CB

#4578CB is a mid, vivid blue. Relative luminance 0.190; OKLCH L 57.8% C 0.140 H 259.7°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#4578CB
RGB	rgb(69, 120, 203)
HSL	hsl(217, 56%, 53%)
HSV	hsv(217, 66%, 80%)
CMYK	cmyk(66%, 40.9%, 0%, 20.4%)
CIE-LAB	lab(50.70, 9.64, -48.16)
CIE-LCH	lch(50.70, 49.11, 281.32°)
OKLab	oklab(57.79% -0.025 -0.1372)
OKLCH	oklch(57.79% 0.14 259.7)
XYZ	xyz(19.9464, 19.0080, 59.1061)
Luminance	0.1901 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4578CB #CB9845

analogous

#45BBCB #4578CB #5545CB

triadic

#4578CB #CB4578 #78CB45

tetradic

#4578CB #CB45BB #CB9845 #45CB55

square

#4578CB #CB45BB #CB9845 #45CB55

split-complementary

#4578CB #CB5545 #BBCB45

monochromatic

#214175 #2E5BA5 #4578CB #759BD8 #A5BDE6

Accessibility & contrast

On white

4.37

#4578CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#4578CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4578CB

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4578CB	#FFFFFF	#000000	##000000
##4578CB	1.00	4.37	4.80	4.80
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#527FCE

Deuteranopia (green-blind)

#3D73C9

Tritanopia (blue-blind)

#008B97

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #4578cb;
/* rgb */ color: rgb(69, 120, 203);
/* oklch */ color: oklch(57.8% 0.140 259.7);

Tailwind

colors: {
  custom: {
    50: '#869edb',
    500: '#4578cb',
    950: '#000000',
  },
}

SCSS

$custom: #4578cb;
$custom-light: #869edb;
$custom-dark: #000000;

JSON

{
  "hex": "#4578cb",
  "rgb": {
    "r": 69,
    "g": 120,
    "b": 203
  },
  "hsl": {
    "h": 217.164,
    "s": 56.303,
    "l": 53.333
  },
  "oklch": {
    "l": 0.57785,
    "c": 0.13951,
    "h": 259.7
  },
  "luminance": 0.1901
}

Semantic roles & 50–950 ramp

primary

#4578CB

secondary

#D3BD99

accent

#A648E0

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4578CB

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

Preview Lab → · Contrast checker → · Palette generator →