#4579CF#4579CF

#4579CF is a mid, vivid blue. Relative luminance 0.194; OKLCH L 58.2% C 0.144 H 259.9°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#4579CF
RGB	rgb(69, 121, 207)
HSL	hsl(217, 59%, 54%)
HSV	hsv(217, 67%, 81%)
CMYK	cmyk(66.7%, 41.5%, 0%, 18.8%)
CIE-LAB	lab(51.20, 10.44, -49.63)
CIE-LCH	lch(51.20, 50.71, 281.88°)
OKLab	oklab(58.25% -0.0252 -0.1416)
OKLCH	oklch(58.25% 0.144 259.9)
XYZ	xyz(20.5501, 19.4429, 61.6892)
Luminance	0.1945 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4579CF #CF9B45

analogous

#45BECF #4579CF #5645CF

triadic

#4579CF #CF4579 #79CF45

tetradic

#4579CF #CF45BE #CF9B45 #45CF56

square

#4579CF #CF45BE #CF9B45 #45CF56

split-complementary

#4579CF #CF5645 #BECF45

monochromatic

#20427A #2C5CAB #4579CF #769CDC #A6BFE8

Accessibility & contrast

On white

4.30

#4579CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#4579CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4579CF

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4579CF	#FFFFFF	#000000	##000000
##4579CF	1.00	4.30	4.89	4.89
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5181D2

Deuteranopia (green-blind)

#3B74CD

Tritanopia (blue-blind)

#008D9A

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #4579cf;
/* rgb */ color: rgb(69, 121, 207);
/* oklch */ color: oklch(58.2% 0.144 259.9);

Tailwind

colors: {
  custom: {
    50: '#879fde',
    500: '#4579cf',
    950: '#000000',
  },
}

SCSS

$custom: #4579cf;
$custom-light: #879fde;
$custom-dark: #000000;

JSON

{
  "hex": "#4579cf",
  "rgb": {
    "r": 69,
    "g": 121,
    "b": 207
  },
  "hsl": {
    "h": 217.391,
    "s": 58.974,
    "l": 54.118
  },
  "oklch": {
    "l": 0.58248,
    "c": 0.14378,
    "h": 259.9
  },
  "luminance": 0.19445
}

Semantic roles & 50–950 ramp

primary

#4579CF

secondary

#D5BF9B

accent

#A746E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #4579CF

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

Preview Lab → · Contrast checker → · Palette generator →