#5172BB#5172BB

#5172BB is a mid, moderate blue. Relative luminance 0.174; OKLCH L 56.1% C 0.120 H 264.5°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#5172BB
RGB	rgb(81, 114, 187)
HSL	hsl(221, 44%, 53%)
HSV	hsv(221, 57%, 73%)
CMYK	cmyk(56.7%, 39%, 0%, 26.7%)
CIE-LAB	lab(48.72, 10.14, -42.08)
CIE-LCH	lch(48.72, 43.28, 283.55°)
OKLab	oklab(56.13% -0.0115 -0.1193)
OKLCH	oklch(56.13% 0.12 264.5)
XYZ	xyz(18.3772, 17.3704, 49.3885)
Luminance	0.1737 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5172BB #BB9A51

analogous

#51A7BB #5172BB #6551BB

triadic

#5172BB #BB5172 #72BB51

tetradic

#5172BB #BB51A7 #BB9A51 #51BB65

square

#5172BB #BB51A7 #BB9A51 #51BB65

split-complementary

#5172BB #BB6551 #A7BB51

monochromatic

#293D69 #3A5695 #5172BB #7D96CC #A9B9DD

Accessibility & contrast

On white

4.69

#5172BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#5172BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5172BB

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5172BB	#FFFFFF	#000000	##FFFFFF
##5172BB	1.00	4.69	4.47	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.47	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5479BE

Deuteranopia (green-blind)

#466FB9

Tritanopia (blue-blind)

#05828D

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #5172bb;
/* rgb */ color: rgb(81, 114, 187);
/* oklch */ color: oklch(56.1% 0.120 264.5);

Tailwind

colors: {
  custom: {
    50: '#8a9ad0',
    500: '#5172bb',
    950: '#000000',
  },
}

SCSS

$custom: #5172bb;
$custom-light: #8a9ad0;
$custom-dark: #000000;

JSON

{
  "hex": "#5172bb",
  "rgb": {
    "r": 81,
    "g": 114,
    "b": 187
  },
  "hsl": {
    "h": 221.321,
    "s": 43.802,
    "l": 52.549
  },
  "oklch": {
    "l": 0.56132,
    "c": 0.11985,
    "h": 264.5
  },
  "luminance": 0.17372
}

Semantic roles & 50–950 ramp

primary

#5172BB

secondary

#CBBD9D

accent

#AC54D4

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0E14

muted

#7D7E82

Preview Lab

Preview with #5172BB

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

Preview Lab → · Contrast checker → · Palette generator →