#5151DB#5151DB

#5151DB is a mid, highly saturated blue. Relative luminance 0.127; OKLCH L 52.0% C 0.205 H 276.6°. Best body text is #FFFFFF at 5.92:1 contrast (WCAG AA passes).

Color values

HEX	#5151DB
RGB	rgb(81, 81, 219)
HSL	hsl(240, 66%, 59%)
HSV	hsv(240, 63%, 86%)
CMYK	cmyk(63%, 63%, 0%, 14.1%)
CIE-LAB	lab(42.38, 41.32, -70.68)
CIE-LCH	lch(42.38, 81.87, 300.31°)
OKLab	oklab(52.02% 0.0235 -0.2037)
OKLCH	oklch(52.02% 0.205 276.6)
XYZ	xyz(19.1178, 12.7471, 68.4571)
Luminance	0.1275 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5151DB #DBDB51

analogous

#5196DB #5151DB #9651DB

triadic

#5151DB #DB5151 #51DB51

tetradic

#5151DB #DB5196 #DBDB51 #51DB96

square

#5151DB #DB5196 #DBDB51 #51DB96

split-complementary

#5151DB #DB9651 #96DB51

monochromatic

#1E1E93 #2929C6 #5151DB #8484E5 #B6B6F0

Accessibility & contrast

On white

5.92

#5151DB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#5151DB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5151DB

5.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5151DB	#FFFFFF	#000000	##FFFFFF
##5151DB	1.00	5.92	3.55	5.92
#FFFFFF	5.92	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ADF

Deuteranopia (green-blind)

#005ED8

Tritanopia (blue-blind)

#00748E

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #5151db;
/* rgb */ color: rgb(81, 81, 219);
/* oklch */ color: oklch(52.0% 0.205 276.6);

Tailwind

colors: {
  custom: {
    50: '#9182e7',
    500: '#5151db',
    950: '#000000',
  },
}

SCSS

$custom: #5151db;
$custom-light: #9182e7;
$custom-dark: #000000;

JSON

{
  "hex": "#5151db",
  "rgb": {
    "r": 81,
    "g": 81,
    "b": 219
  },
  "hsl": {
    "h": 240,
    "s": 65.714,
    "l": 58.824
  },
  "oklch": {
    "l": 0.52024,
    "c": 0.20502,
    "h": 276.6
  },
  "luminance": 0.12749
}

Semantic roles & 50–950 ramp

primary

#5151DB

secondary

#DFDFA9

accent

#E93FE9

background

#F9F8FE

surface

#F2EFFD

border

#CCCAD5

text

#0E0A16

muted

#7E7C84

Preview Lab

Preview with #5151DB

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

Preview Lab → · Contrast checker → · Palette generator →