#4570BB#4570BB

#4570BB is a mid, vivid blue. Relative luminance 0.164; OKLCH L 55.1% C 0.127 H 260.8°. Best body text is #FFFFFF at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#4570BB
RGB	rgb(69, 112, 187)
HSL	hsl(218, 46%, 50%)
HSV	hsv(218, 63%, 73%)
CMYK	cmyk(63.1%, 40.1%, 0%, 26.7%)
CIE-LAB	lab(47.55, 8.99, -43.98)
CIE-LCH	lch(47.55, 44.89, 281.55°)
OKLab	oklab(55.06% -0.0203 -0.1251)
OKLCH	oklch(55.06% 0.127 260.8)
XYZ	xyz(17.2149, 16.4398, 49.2701)
Luminance	0.1644 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4570BB #BB9045

analogous

#45ABBB #4570BB #5545BB

triadic

#4570BB #BB4570 #70BB45

tetradic

#4570BB #BB45AB #BB9045 #45BB55

square

#4570BB #BB45AB #BB9045 #45BB55

split-complementary

#4570BB #BB5545 #ABBB45

monochromatic

#243A62 #34558F #4570BB #7292CB #9FB5DC

Accessibility & contrast

On white

4.90

#4570BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.29

#4570BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4570BB

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4570BB	#FFFFFF	#000000	##FFFFFF
##4570BB	1.00	4.90	4.29	4.90
#FFFFFF	4.90	1.00	21.00	1.00
#000000	4.29	21.00	1.00	21.00
##FFFFFF	4.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F77BE

Deuteranopia (green-blind)

#3E6CB9

Tritanopia (blue-blind)

#00818C

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #4570bb;
/* rgb */ color: rgb(69, 112, 187);
/* oklch */ color: oklch(55.1% 0.127 260.8);

Tailwind

colors: {
  custom: {
    50: '#8498d0',
    500: '#4570bb',
    950: '#000000',
  },
}

SCSS

$custom: #4570bb;
$custom-light: #8498d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4570bb",
  "rgb": {
    "r": 69,
    "g": 112,
    "b": 187
  },
  "hsl": {
    "h": 218.136,
    "s": 46.457,
    "l": 50.196
  },
  "oklch": {
    "l": 0.55056,
    "c": 0.12676,
    "h": 260.8
  },
  "luminance": 0.16441
}

Semantic roles & 50–950 ramp

primary

#4570BB

secondary

#C8B594

accent

#A652D6

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0D14

muted

#7D7E82

Preview Lab

Preview with #4570BB

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

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