#4571DD#4571DD

#4571DD is a mid, vivid blue. Relative luminance 0.183; OKLCH L 57.5% C 0.172 H 264.8°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#4571DD
RGB	rgb(69, 113, 221)
HSL	hsl(223, 69%, 57%)
HSV	hsv(223, 69%, 87%)
CMYK	cmyk(68.8%, 48.9%, 0%, 13.3%)
CIE-LAB	lab(49.85, 20.37, -59.73)
CIE-LCH	lch(49.85, 63.11, 288.83°)
OKLab	oklab(57.48% -0.0155 -0.1714)
OKLCH	oklch(57.48% 0.172 264.8)
XYZ	xyz(21.4059, 18.2938, 70.7955)
Luminance	0.1830 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4571DD #DDB145

analogous

#45BDDD #4571DD #6545DD

triadic

#4571DD #DD4571 #71DD45

tetradic

#4571DD #DD45BD #DDB145 #45DD65

square

#4571DD #DD45BD #DDB145 #45DD65

split-complementary

#4571DD #DD6545 #BDDD45

monochromatic

#1A3B8E #2351C1 #4571DD #7999E6 #ACC0F0

Accessibility & contrast

On white

4.51

#4571DD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#4571DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4571DD

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4571DD	#FFFFFF	#000000	##000000
##4571DD	1.00	4.51	4.66	4.66
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#347EE1

Deuteranopia (green-blind)

#0070DB

Tritanopia (blue-blind)

#008A9C

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #4571dd;
/* rgb */ color: rgb(69, 113, 221);
/* oklch */ color: oklch(57.5% 0.172 264.8);

Tailwind

colors: {
  custom: {
    50: '#8a99e8',
    500: '#4571dd',
    950: '#000000',
  },
}

SCSS

$custom: #4571dd;
$custom-light: #8a99e8;
$custom-dark: #000000;

JSON

{
  "hex": "#4571dd",
  "rgb": {
    "r": 69,
    "g": 113,
    "b": 221
  },
  "hsl": {
    "h": 222.632,
    "s": 69.091,
    "l": 56.863
  },
  "oklch": {
    "l": 0.57481,
    "c": 0.17208,
    "h": 264.8
  },
  "luminance": 0.18296
}

Semantic roles & 50–950 ramp

primary

#4571DD

secondary

#DECCA0

accent

#B93CEC

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0D16

muted

#7E7E84

Preview Lab

Preview with #4571DD

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

Preview Lab → · Contrast checker → · Palette generator →