#5151EB#5151EB

#5151EB is a mid, highly saturated blue. Relative luminance 0.136; OKLCH L 53.4% C 0.225 H 275.6°. Best body text is #FFFFFF at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#5151EB
RGB	rgb(81, 81, 235)
HSL	hsl(240, 79%, 62%)
HSV	hsv(240, 66%, 92%)
CMYK	cmyk(65.5%, 65.5%, 0%, 7.8%)
CIE-LAB	lab(43.70, 46.51, -77.61)
CIE-LCH	lch(43.70, 90.48, 300.93°)
OKLab	oklab(53.39% 0.0221 -0.224)
OKLCH	oklch(53.39% 0.225 275.6)
XYZ	xyz(21.3262, 13.6305, 80.0882)
Luminance	0.1363 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5151EB #EBEB51

analogous

#519EEB #5151EB #9E51EB

triadic

#5151EB #EB5151 #51EB51

tetradic

#5151EB #EB519E #EBEB51 #51EB9E

square

#5151EB #EB519E #EBEB51 #51EB9E

split-complementary

#5151EB #EB9E51 #9EEB51

monochromatic

#1414AE #1A1AE5 #5151EB #8888F1 #BFBFF8

Accessibility & contrast

On white

5.64

#5151EB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#5151EB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5151EB

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5151EB	#FFFFFF	#000000	##FFFFFF
##5151EB	1.00	5.64	3.73	5.64
#FFFFFF	5.64	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006EF0

Deuteranopia (green-blind)

#0060E8

Tritanopia (blue-blind)

#007997

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #5151eb;
/* rgb */ color: rgb(81, 81, 235);
/* oklch */ color: oklch(53.4% 0.225 275.6);

Tailwind

colors: {
  custom: {
    50: '#9382f3',
    500: '#5151eb',
    950: '#000000',
  },
}

SCSS

$custom: #5151eb;
$custom-light: #9382f3;
$custom-dark: #000000;

JSON

{
  "hex": "#5151eb",
  "rgb": {
    "r": 81,
    "g": 81,
    "b": 235
  },
  "hsl": {
    "h": 240,
    "s": 79.381,
    "l": 61.961
  },
  "oklch": {
    "l": 0.53391,
    "c": 0.22507,
    "h": 275.6
  },
  "luminance": 0.13632
}

Semantic roles & 50–950 ramp

primary

#5151EB

secondary

#E8E8B0

accent

#DC0ADC

background

#F9F8FF

surface

#F2EFFE

border

#CCCAD6

text

#0F0A17

muted

#7E7C85

Preview Lab

Preview with #5151EB

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

Preview Lab → · Contrast checker → · Palette generator →