#5151AE#5151AE

#5151AE is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.5% C 0.145 H 279.6°. Best body text is #FFFFFF at 6.69:1 contrast (WCAG AA passes).

Color values

HEX	#5151AE
RGB	rgb(81, 81, 174)
HSL	hsl(240, 36%, 50%)
HSV	hsv(240, 53%, 68%)
CMYK	cmyk(53.4%, 53.4%, 0%, 31.8%)
CIE-LAB	lab(39.05, 26.60, -49.93)
CIE-LCH	lch(39.05, 56.57, 298.04°)
OKLab	oklab(48.52% 0.024 -0.1427)
OKLCH	oklch(48.52% 0.145 279.6)
XYZ	xyz(13.9734, 10.6893, 41.3631)
Luminance	0.1069 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5151AE #AEAE51

analogous

#517FAE #5151AE #7F51AE

triadic

#5151AE #AE5151 #51AE51

tetradic

#5151AE #AE5180 #AEAE51 #51AE80

square

#5151AE #AE5180 #AEAE51 #51AE80

split-complementary

#5151AE #AE8051 #80AE51

monochromatic

#2A2A5A #3E3E84 #5151AE #7B7BC1 #A5A5D5

Accessibility & contrast

On white

6.69

#5151AE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#5151AE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5151AE

6.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5151AE	#FFFFFF	#000000	##FFFFFF
##5151AE	1.00	6.69	3.14	6.69
#FFFFFF	6.69	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D60B1

Deuteranopia (green-blind)

#0E58AC

Tritanopia (blue-blind)

#286677

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #5151ae;
/* rgb */ color: rgb(81, 81, 174);
/* oklch */ color: oklch(48.5% 0.145 279.6);

Tailwind

colors: {
  custom: {
    50: '#8982c7',
    500: '#5151ae',
    950: '#000000',
  },
}

SCSS

$custom: #5151ae;
$custom-light: #8982c7;
$custom-dark: #000000;

JSON

{
  "hex": "#5151ae",
  "rgb": {
    "r": 81,
    "g": 81,
    "b": 174
  },
  "hsl": {
    "h": 240,
    "s": 36.471,
    "l": 50
  },
  "oklch": {
    "l": 0.48516,
    "c": 0.14468,
    "h": 279.6
  },
  "luminance": 0.1069
}

Semantic roles & 50–950 ramp

primary

#5151AE

secondary

#C2C299

accent

#CC5BCC

background

#F8F7FC

surface

#F0EEF8

border

#CBC9D1

text

#0C0A13

muted

#7D7C82

Preview Lab

Preview with #5151AE

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

Preview Lab → · Contrast checker → · Palette generator →