#5570BB#5570BB

#5570BB is a mid, vivid blue. Relative luminance 0.171; OKLCH L 55.9% C 0.121 H 267.5°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#5570BB
RGB	rgb(85, 112, 187)
HSL	hsl(224, 43%, 53%)
HSV	hsv(224, 55%, 73%)
CMYK	cmyk(54.5%, 40.1%, 0%, 26.7%)
CIE-LAB	lab(48.39, 12.25, -42.59)
CIE-LCH	lch(48.39, 44.31, 286.04°)
OKLab	oklab(55.94% -0.0053 -0.1207)
OKLCH	oklch(55.94% 0.121 267.5)
XYZ	xyz(18.5071, 17.1061, 49.3306)
Luminance	0.1711 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5570BB #BBA055

analogous

#55A3BB #5570BB #6D55BB

triadic

#5570BB #BB5570 #70BB55

tetradic

#5570BB #BB55A3 #BBA055 #55BB6D

square

#5570BB #BB55A3 #BBA055 #55BB6D

split-complementary

#5570BB #BB6D55 #A3BB55

monochromatic

#2B3C6B #3C5497 #5570BB #8195CC #ACBADE

Accessibility & contrast

On white

4.75

#5570BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#5570BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5570BB

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5570BB	#FFFFFF	#000000	##FFFFFF
##5570BB	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5178BE

Deuteranopia (green-blind)

#456FB9

Tritanopia (blue-blind)

#1E808C

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #5570bb;
/* rgb */ color: rgb(85, 112, 187);
/* oklch */ color: oklch(55.9% 0.121 267.5);

Tailwind

colors: {
  custom: {
    50: '#8c98d0',
    500: '#5570bb',
    950: '#000000',
  },
}

SCSS

$custom: #5570bb;
$custom-light: #8c98d0;
$custom-dark: #000000;

JSON

{
  "hex": "#5570bb",
  "rgb": {
    "r": 85,
    "g": 112,
    "b": 187
  },
  "hsl": {
    "h": 224.118,
    "s": 42.857,
    "l": 53.333
  },
  "oklch": {
    "l": 0.55938,
    "c": 0.12085,
    "h": 267.5
  },
  "luminance": 0.17107
}

Semantic roles & 50–950 ramp

primary

#5570BB

secondary

#CCC0A0

accent

#B155D3

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0D0D14

muted

#7D7E82

Preview Lab

Preview with #5570BB

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

Preview Lab → · Contrast checker → · Palette generator →