#5151C7#5151C7

#5151C7 is a mid, vivid blue. Relative luminance 0.118; OKLCH L 50.4% C 0.179 H 277.8°. Best body text is #FFFFFF at 6.27:1 contrast (WCAG AA passes).

Color values

HEX	#5151C7
RGB	rgb(81, 81, 199)
HSL	hsl(240, 51%, 55%)
HSV	hsv(240, 59%, 78%)
CMYK	cmyk(59.3%, 59.3%, 0%, 22%)
CIE-LAB	lab(40.83, 34.78, -61.70)
CIE-LCH	lch(40.83, 70.83, 299.41°)
OKLab	oklab(50.4% 0.0244 -0.1773)
OKLCH	oklch(50.4% 0.179 277.8)
XYZ	xyz(16.6413, 11.7565, 55.4141)
Luminance	0.1176 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5151C7 #C7C751

analogous

#518CC7 #5151C7 #8C51C7

triadic

#5151C7 #C75151 #51C751

tetradic

#5151C7 #C7518C #C7C751 #51C78C

square

#5151C7 #C7518C #C7C751 #51C78C

split-complementary

#5151C7 #C78C51 #8CC751

monochromatic

#262677 #3535A6 #5151C7 #7F7FD6 #AEAEE5

Accessibility & contrast

On white

6.27

#5151C7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#5151C7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5151C7

6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5151C7	#FFFFFF	#000000	##FFFFFF
##5151C7	1.00	6.27	3.35	6.27
#FFFFFF	6.27	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0065CB

Deuteranopia (green-blind)

#005BC5

Tritanopia (blue-blind)

#006E84

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #5151c7;
/* rgb */ color: rgb(81, 81, 199);
/* oklch */ color: oklch(50.4% 0.179 277.8);

Tailwind

colors: {
  custom: {
    50: '#8d82d9',
    500: '#5151c7',
    950: '#000000',
  },
}

SCSS

$custom: #5151c7;
$custom-light: #8d82d9;
$custom-dark: #000000;

JSON

{
  "hex": "#5151c7",
  "rgb": {
    "r": 81,
    "g": 81,
    "b": 199
  },
  "hsl": {
    "h": 240,
    "s": 51.304,
    "l": 54.902
  },
  "oklch": {
    "l": 0.50397,
    "c": 0.17897,
    "h": 277.8
  },
  "luminance": 0.11758
}

Semantic roles & 50–950 ramp

primary

#5151C7

secondary

#D3D3A1

accent

#DB4DDB

background

#F9F7FD

surface

#F1EEFB

border

#CBC9D4

text

#0D0A15

muted

#7E7C83

Preview Lab

Preview with #5151C7

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

Preview Lab → · Contrast checker → · Palette generator →