#5181DC#5181DC

#5181DC is a mid, vivid blue. Relative luminance 0.226; OKLCH L 61.3% C 0.148 H 262.0°. Best body text is #000000 at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#5181DC
RGB	rgb(81, 129, 220)
HSL	hsl(219, 67%, 59%)
HSV	hsv(219, 63%, 86%)
CMYK	cmyk(63.2%, 41.4%, 0%, 13.7%)
CIE-LAB	lab(54.67, 12.09, -51.41)
CIE-LCH	lch(54.67, 52.81, 283.24°)
OKLab	oklab(61.31% -0.0206 -0.1465)
OKLCH	oklch(61.31% 0.148 262)
XYZ	xyz(24.1573, 22.6149, 70.7883)
Luminance	0.2262 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5181DC #DCAC51

analogous

#51C6DC #5181DC #6751DC

triadic

#5181DC #DC5181 #81DC51

tetradic

#5181DC #DC51C6 #DCAC51 #51DC67

square

#5181DC #DC51C6 #DCAC51 #51DC67

split-complementary

#5181DC #DC6751 #C6DC51

monochromatic

#1E4795 #285FC8 #5181DC #84A6E6 #B7CBF0

Accessibility & contrast

On white

3.80

#5181DC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.52

#5181DC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5181DC

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5181DC	#FFFFFF	#000000	##000000
##5181DC	1.00	3.80	5.52	5.52
#FFFFFF	3.80	1.00	21.00	21.00
#000000	5.52	21.00	1.00	1.00
##000000	5.52	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#588AE0

Deuteranopia (green-blind)

#437DDA

Tritanopia (blue-blind)

#0096A4

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #5181dc;
/* rgb */ color: rgb(81, 129, 220);
/* oklch */ color: oklch(61.3% 0.148 262.0);

Tailwind

colors: {
  custom: {
    50: '#8ea5e7',
    500: '#5181dc',
    950: '#000000',
  },
}

SCSS

$custom: #5181dc;
$custom-light: #8ea5e7;
$custom-dark: #000000;

JSON

{
  "hex": "#5181dc",
  "rgb": {
    "r": 81,
    "g": 129,
    "b": 220
  },
  "hsl": {
    "h": 219.281,
    "s": 66.507,
    "l": 59.02
  },
  "oklch": {
    "l": 0.61312,
    "c": 0.14791,
    "h": 262
  },
  "luminance": 0.22617
}

Semantic roles & 50–950 ramp

primary

#5181DC

secondary

#E0CDA9

accent

#AE3EE9

background

#F9FAFE

surface

#F2F4FC

border

#CCCED5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #5181DC

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

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