#5170CB#5170CB

#5170CB is a mid, vivid blue. Relative luminance 0.176; OKLCH L 56.7% C 0.145 H 267.5°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#5170CB
RGB	rgb(81, 112, 203)
HSL	hsl(225, 54%, 56%)
HSV	hsv(225, 60%, 80%)
CMYK	cmyk(60.1%, 44.8%, 0%, 20.4%)
CIE-LAB	lab(49.07, 16.76, -50.72)
CIE-LCH	lch(49.07, 53.42, 288.28°)
OKLab	oklab(56.69% -0.0063 -0.1447)
OKLCH	oklch(56.69% 0.145 267.5)
XYZ	xyz(19.9633, 17.6478, 58.8427)
Luminance	0.1765 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5170CB #CBAC51

analogous

#51ADCB #5170CB #6F51CB

triadic

#5170CB #CB5170 #70CB51

tetradic

#5170CB #CB51AD #CBAC51 #51CB6F

square

#5170CB #CB51AD #CBAC51 #51CB6F

split-complementary

#5170CB #CB6F51 #ADCB51

monochromatic

#253B7C #3352AC #5170CB #8097D9 #AFBDE7

Accessibility & contrast

On white

4.64

#5170CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#5170CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #5170CB

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5170CB	#FFFFFF	#000000	##FFFFFF
##5170CB	1.00	4.64	4.53	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#467ACE

Deuteranopia (green-blind)

#336FC9

Tritanopia (blue-blind)

#008493

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #5170cb;
/* rgb */ color: rgb(81, 112, 203);
/* oklch */ color: oklch(56.7% 0.145 267.5);

Tailwind

colors: {
  custom: {
    50: '#8c98db',
    500: '#5170cb',
    950: '#000000',
  },
}

SCSS

$custom: #5170cb;
$custom-light: #8c98db;
$custom-dark: #000000;

JSON

{
  "hex": "#5170cb",
  "rgb": {
    "r": 81,
    "g": 112,
    "b": 203
  },
  "hsl": {
    "h": 224.754,
    "s": 53.982,
    "l": 55.686
  },
  "oklch": {
    "l": 0.56686,
    "c": 0.14482,
    "h": 267.5
  },
  "luminance": 0.17649
}

Semantic roles & 50–950 ramp

primary

#5170CB

secondary

#D5C8A3

accent

#B84ADD

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #5170CB

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

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