#4570CB#4570CB

#4570CB is a mid, vivid blue. Relative luminance 0.172; OKLCH L 56.1% C 0.149 H 263.4°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#4570CB
RGB	rgb(69, 112, 203)
HSL	hsl(221, 56%, 53%)
HSV	hsv(221, 66%, 80%)
CMYK	cmyk(66%, 44.8%, 0%, 20.4%)
CIE-LAB	lab(48.47, 14.61, -51.72)
CIE-LCH	lch(48.47, 53.74, 285.77°)
OKLab	oklab(56.06% -0.0172 -0.1478)
OKLCH	oklch(56.06% 0.149 263.4)
XYZ	xyz(19.0241, 17.1635, 58.7986)
Luminance	0.1716 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4570CB #CBA045

analogous

#45B3CB #4570CB #5D45CB

triadic

#4570CB #CB4570 #70CB45

tetradic

#4570CB #CB45B3 #CBA045 #45CB5D

square

#4570CB #CB45B3 #CBA045 #45CB5D

split-complementary

#4570CB #CB5D45 #B3CB45

monochromatic

#213C75 #2E54A5 #4570CB #7595D8 #A5BAE6

Accessibility & contrast

On white

4.74

#4570CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#4570CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4570CB

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4570CB	#FFFFFF	#000000	##FFFFFF
##4570CB	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#447ACE

Deuteranopia (green-blind)

#2C6DC9

Tritanopia (blue-blind)

#008593

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #4570cb;
/* rgb */ color: rgb(69, 112, 203);
/* oklch */ color: oklch(56.1% 0.149 263.4);

Tailwind

colors: {
  custom: {
    50: '#8698db',
    500: '#4570cb',
    950: '#000000',
  },
}

SCSS

$custom: #4570cb;
$custom-light: #8698db;
$custom-dark: #000000;

JSON

{
  "hex": "#4570cb",
  "rgb": {
    "r": 69,
    "g": 112,
    "b": 203
  },
  "hsl": {
    "h": 220.746,
    "s": 56.303,
    "l": 53.333
  },
  "oklch": {
    "l": 0.56063,
    "c": 0.14883,
    "h": 263.4
  },
  "luminance": 0.17165
}

Semantic roles & 50–950 ramp

primary

#4570CB

secondary

#D3C099

accent

#AF48E0

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #4570CB

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

Preview Lab → · Contrast checker → · Palette generator →