#5181E2#5181E2

#5181E2 is a mid, vivid blue. Relative luminance 0.229; OKLCH L 61.7% C 0.156 H 262.8°. Best body text is #000000 at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#5181E2
RGB	rgb(81, 129, 226)
HSL	hsl(220, 71%, 60%)
HSV	hsv(220, 64%, 89%)
CMYK	cmyk(64.2%, 42.9%, 0%, 11.4%)
CIE-LAB	lab(55.01, 14.14, -54.24)
CIE-LCH	lch(55.01, 56.05, 284.61°)
OKLab	oklab(61.68% -0.0195 -0.1548)
OKLCH	oklch(61.68% 0.156 262.8)
XYZ	xyz(24.9662, 22.9385, 75.0486)
Luminance	0.2294 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5181E2 #E2B251

analogous

#51CAE2 #5181E2 #6951E2

triadic

#5181E2 #E25181 #81E251

tetradic

#5181E2 #E251CA #E2B251 #51E269

square

#5181E2 #E251CA #E2B251 #51E269

split-complementary

#5181E2 #E26951 #CAE251

monochromatic

#1A469E #235DD3 #5181E2 #85A7EB #BACDF3

Accessibility & contrast

On white

3.76

#5181E2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.59

#5181E2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5181E2

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5181E2	#FFFFFF	#000000	##000000
##5181E2	1.00	3.76	5.59	5.59
#FFFFFF	3.76	1.00	21.00	21.00
#000000	5.59	21.00	1.00	1.00
##000000	5.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#548BE6

Deuteranopia (green-blind)

#3C7DE0

Tritanopia (blue-blind)

#0097A6

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #5181e2;
/* rgb */ color: rgb(81, 129, 226);
/* oklch */ color: oklch(61.7% 0.156 262.8);

Tailwind

colors: {
  custom: {
    50: '#8fa5ec',
    500: '#5181e2',
    950: '#000000',
  },
}

SCSS

$custom: #5181e2;
$custom-light: #8fa5ec;
$custom-dark: #000000;

JSON

{
  "hex": "#5181e2",
  "rgb": {
    "r": 81,
    "g": 129,
    "b": 226
  },
  "hsl": {
    "h": 220.138,
    "s": 71.429,
    "l": 60.196
  },
  "oklch": {
    "l": 0.6168,
    "c": 0.156,
    "h": 262.8
  },
  "luminance": 0.22941
}

Semantic roles & 50–950 ramp

primary

#5181E2

secondary

#E3D1AC

accent

#9312D3

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #5181E2

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

Preview Lab → · Contrast checker → · Palette generator →