#4571BB#4571BB

#4571BB is a mid, vivid blue. Relative luminance 0.167; OKLCH L 55.3% C 0.126 H 260.2°. Best body text is #FFFFFF at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#4571BB
RGB	rgb(69, 113, 187)
HSL	hsl(218, 46%, 50%)
HSV	hsv(218, 63%, 73%)
CMYK	cmyk(63.1%, 39.6%, 0%, 26.7%)
CIE-LAB	lab(47.83, 8.37, -43.53)
CIE-LCH	lch(47.83, 44.33, 280.88°)
OKLab	oklab(55.28% -0.0214 -0.1238)
OKLCH	oklch(55.28% 0.126 260.2)
XYZ	xyz(17.3258, 16.6617, 49.3070)
Luminance	0.1666 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4571BB #BB8F45

analogous

#45ACBB #4571BB #5445BB

triadic

#4571BB #BB4571 #71BB45

tetradic

#4571BB #BB45AC #BB8F45 #45BB54

square

#4571BB #BB45AC #BB8F45 #45BB54

split-complementary

#4571BB #BB5445 #ACBB45

monochromatic

#243B62 #34568F #4571BB #7293CB #9FB5DC

Accessibility & contrast

On white

4.85

#4571BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.33

#4571BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4571BB

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4571BB	#FFFFFF	#000000	##FFFFFF
##4571BB	1.00	4.85	4.33	4.85
#FFFFFF	4.85	1.00	21.00	1.00
#000000	4.33	21.00	1.00	21.00
##FFFFFF	4.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5077BE

Deuteranopia (green-blind)

#406CB9

Tritanopia (blue-blind)

#00828D

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #4571bb;
/* rgb */ color: rgb(69, 113, 187);
/* oklch */ color: oklch(55.3% 0.126 260.2);

Tailwind

colors: {
  custom: {
    50: '#8499d0',
    500: '#4571bb',
    950: '#000000',
  },
}

SCSS

$custom: #4571bb;
$custom-light: #8499d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4571bb",
  "rgb": {
    "r": 69,
    "g": 113,
    "b": 187
  },
  "hsl": {
    "h": 217.627,
    "s": 46.457,
    "l": 50.196
  },
  "oklch": {
    "l": 0.55277,
    "c": 0.12562,
    "h": 260.2
  },
  "luminance": 0.16663
}

Semantic roles & 50–950 ramp

primary

#4571BB

secondary

#C8B594

accent

#A552D6

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0D14

muted

#7D7E82

Preview Lab

Preview with #4571BB

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

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