#5151D2#5151D2

#5151D2 is a mid, vivid blue. Relative luminance 0.123; OKLCH L 51.3% C 0.193 H 277.1°. Best body text is #FFFFFF at 6.07:1 contrast (WCAG AA passes).

Color values

HEX	#5151D2
RGB	rgb(81, 81, 210)
HSL	hsl(240, 59%, 57%)
HSV	hsv(240, 61%, 82%)
CMYK	cmyk(61.4%, 61.4%, 0%, 17.6%)
CIE-LAB	lab(41.67, 38.38, -66.69)
CIE-LCH	lch(41.67, 76.94, 299.92°)
OKLab	oklab(51.28% 0.024 -0.1919)
OKLCH	oklch(51.28% 0.193 277.1)
XYZ	xyz(17.9649, 12.2859, 62.3850)
Luminance	0.1229 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5151D2 #D2D251

analogous

#5192D2 #5151D2 #9251D2

triadic

#5151D2 #D25151 #51D251

tetradic

#5151D2 #D25192 #D2D251 #51D292

square

#5151D2 #D25192 #D2D251 #51D292

split-complementary

#5151D2 #D29251 #92D251

monochromatic

#232386 #2F2FB7 #5151D2 #8282DF #B2B2EB

Accessibility & contrast

On white

6.07

#5151D2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#5151D2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5151D2

6.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5151D2	#FFFFFF	#000000	##FFFFFF
##5151D2	1.00	6.07	3.46	6.07
#FFFFFF	6.07	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068D6

Deuteranopia (green-blind)

#005DCF

Tritanopia (blue-blind)

#00718A

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #5151d2;
/* rgb */ color: rgb(81, 81, 210);
/* oklch */ color: oklch(51.3% 0.193 277.1);

Tailwind

colors: {
  custom: {
    50: '#8f82e1',
    500: '#5151d2',
    950: '#000000',
  },
}

SCSS

$custom: #5151d2;
$custom-light: #8f82e1;
$custom-dark: #000000;

JSON

{
  "hex": "#5151d2",
  "rgb": {
    "r": 81,
    "g": 81,
    "b": 210
  },
  "hsl": {
    "h": 240,
    "s": 58.904,
    "l": 57.059
  },
  "oklch": {
    "l": 0.5128,
    "c": 0.19344,
    "h": 277.1
  },
  "luminance": 0.12287
}

Semantic roles & 50–950 ramp

primary

#5151D2

secondary

#DADAA5

accent

#E246E2

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0E0A15

muted

#7E7C83

Preview Lab

Preview with #5151D2

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

Preview Lab → · Contrast checker → · Palette generator →