#5161BB#5161BB

#5161BB is a mid, vivid blue. Relative luminance 0.139; OKLCH L 52.6% C 0.141 H 273.0°. Best body text is #FFFFFF at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#5161BB
RGB	rgb(81, 97, 187)
HSL	hsl(231, 44%, 53%)
HSV	hsv(231, 57%, 73%)
CMYK	cmyk(56.7%, 48.1%, 0%, 26.7%)
CIE-LAB	lab(44.07, 20.77, -49.50)
CIE-LCH	lch(44.07, 53.68, 292.76°)
OKLab	oklab(52.57% 0.0075 -0.1412)
OKLCH	oklch(52.57% 0.141 273)
XYZ	xyz(16.6347, 13.8854, 48.8076)
Luminance	0.1389 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5161BB #BBAB51

analogous

#5196BB #5161BB #7651BB

triadic

#5161BB #BB5161 #61BB51

tetradic

#5161BB #BB5196 #BBAB51 #51BB76

square

#5161BB #BB5196 #BBAB51 #51BB76

split-complementary

#5161BB #BB7651 #96BB51

monochromatic

#293369 #3A4895 #5161BB #7D89CC #A9B1DD

Accessibility & contrast

On white

5.56

#5161BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.78

#5161BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5161BB

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5161BB	#FFFFFF	#000000	##FFFFFF
##5161BB	1.00	5.56	3.78	5.56
#FFFFFF	5.56	1.00	21.00	1.00
#000000	3.78	21.00	1.00	21.00
##FFFFFF	5.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#366DBE

Deuteranopia (green-blind)

#2664B9

Tritanopia (blue-blind)

#107585

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #5161bb;
/* rgb */ color: rgb(81, 97, 187);
/* oklch */ color: oklch(52.6% 0.141 273.0);

Tailwind

colors: {
  custom: {
    50: '#8a8dd0',
    500: '#5161bb',
    950: '#000000',
  },
}

SCSS

$custom: #5161bb;
$custom-light: #8a8dd0;
$custom-dark: #000000;

JSON

{
  "hex": "#5161bb",
  "rgb": {
    "r": 81,
    "g": 97,
    "b": 187
  },
  "hsl": {
    "h": 230.943,
    "s": 43.802,
    "l": 52.549
  },
  "oklch": {
    "l": 0.52565,
    "c": 0.14145,
    "h": 273
  },
  "luminance": 0.13887
}

Semantic roles & 50–950 ramp

primary

#5161BB

secondary

#CBC49D

accent

#C054D4

background

#F8F8FC

surface

#F0F0F9

border

#CBCBD2

text

#0C0C14

muted

#7D7D82

Preview Lab

Preview with #5161BB

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

Preview Lab → · Contrast checker → · Palette generator →