#4571BF#4571BF

#4571BF is a mid, vivid blue. Relative luminance 0.168; OKLCH L 55.5% C 0.131 H 261.0°. Best body text is #FFFFFF at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#4571BF
RGB	rgb(69, 113, 191)
HSL	hsl(218, 49%, 51%)
HSV	hsv(218, 64%, 75%)
CMYK	cmyk(63.9%, 40.8%, 0%, 25.1%)
CIE-LAB	lab(48.05, 9.76, -45.49)
CIE-LCH	lch(48.05, 46.52, 282.11°)
OKLab	oklab(55.52% -0.0205 -0.1295)
OKLCH	oklch(55.52% 0.131 261)
XYZ	xyz(17.7600, 16.8354, 51.5937)
Luminance	0.1684 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4571BF #BF9345

analogous

#45AEBF #4571BF #5645BF

triadic

#4571BF #BF4571 #71BF45

tetradic

#4571BF #BF45AE #BF9345 #45BF56

square

#4571BF #BF45AE #BF9345 #45BF56

split-complementary

#4571BF #BF5645 #AEBF45

monochromatic

#233B66 #335694 #4571BF #7394CF #A0B7DE

Accessibility & contrast

On white

4.81

#4571BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.37

#4571BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4571BF

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4571BF	#FFFFFF	#000000	##FFFFFF
##4571BF	1.00	4.81	4.37	4.81
#FFFFFF	4.81	1.00	21.00	1.00
#000000	4.37	21.00	1.00	21.00
##FFFFFF	4.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E78C2

Deuteranopia (green-blind)

#3C6DBD

Tritanopia (blue-blind)

#00838F

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #4571bf;
/* rgb */ color: rgb(69, 113, 191);
/* oklch */ color: oklch(55.5% 0.131 261.0);

Tailwind

colors: {
  custom: {
    50: '#8499d3',
    500: '#4571bf',
    950: '#000000',
  },
}

SCSS

$custom: #4571bf;
$custom-light: #8499d3;
$custom-dark: #000000;

JSON

{
  "hex": "#4571bf",
  "rgb": {
    "r": 69,
    "g": 113,
    "b": 191
  },
  "hsl": {
    "h": 218.361,
    "s": 48.8,
    "l": 50.98
  },
  "oklch": {
    "l": 0.5552,
    "c": 0.13113,
    "h": 261
  },
  "luminance": 0.16837
}

Semantic roles & 50–950 ramp

primary

#4571BF

secondary

#CBB795

accent

#A74FD8

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0D14

muted

#7D7E83

Preview Lab

Preview with #4571BF

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

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