#5181DE#5181DE

#5181DE is a mid, vivid blue. Relative luminance 0.227; OKLCH L 61.4% C 0.151 H 262.3°. Best body text is #000000 at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#5181DE
RGB	rgb(81, 129, 222)
HSL	hsl(220, 68%, 59%)
HSV	hsv(220, 64%, 87%)
CMYK	cmyk(63.5%, 41.9%, 0%, 12.9%)
CIE-LAB	lab(54.78, 12.77, -52.35)
CIE-LCH	lch(54.78, 53.89, 283.71°)
OKLab	oklab(61.43% -0.0202 -0.1492)
OKLCH	oklch(61.43% 0.151 262.3)
XYZ	xyz(24.4238, 22.7215, 72.1916)
Luminance	0.2272 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5181DE #DEAE51

analogous

#51C8DE #5181DE #6751DE

triadic

#5181DE #DE5181 #81DE51

tetradic

#5181DE #DE51C8 #DEAE51 #51DE67

square

#5181DE #DE51C8 #DEAE51 #51DE67

split-complementary

#5181DE #DE6751 #C8DE51

monochromatic

#1D4798 #275FCB #5181DE #84A6E8 #B8CCF2

Accessibility & contrast

On white

3.79

#5181DE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.54

#5181DE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5181DE

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5181DE	#FFFFFF	#000000	##000000
##5181DE	1.00	3.79	5.54	5.54
#FFFFFF	3.79	1.00	21.00	21.00
#000000	5.54	21.00	1.00	1.00
##000000	5.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#568AE2

Deuteranopia (green-blind)

#417DDC

Tritanopia (blue-blind)

#0096A5

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #5181de;
/* rgb */ color: rgb(81, 129, 222);
/* oklch */ color: oklch(61.4% 0.151 262.3);

Tailwind

colors: {
  custom: {
    50: '#8fa5e9',
    500: '#5181de',
    950: '#000000',
  },
}

SCSS

$custom: #5181de;
$custom-light: #8fa5e9;
$custom-dark: #000000;

JSON

{
  "hex": "#5181de",
  "rgb": {
    "r": 81,
    "g": 129,
    "b": 222
  },
  "hsl": {
    "h": 219.574,
    "s": 68.116,
    "l": 59.412
  },
  "oklch": {
    "l": 0.61434,
    "c": 0.15061,
    "h": 262.3
  },
  "luminance": 0.22724
}

Semantic roles & 50–950 ramp

primary

#5181DE

secondary

#E1CEAA

accent

#B03DEB

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #5181DE

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

Preview Lab → · Contrast checker → · Palette generator →