#5B81CA#5B81CA

#5B81CA is a mid, moderate blue. Relative luminance 0.222; OKLCH L 60.8% C 0.120 H 262.5°. Best body text is #000000 at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#5B81CA
RGB	rgb(91, 129, 202)
HSL	hsl(219, 51%, 57%)
HSV	hsv(219, 55%, 79%)
CMYK	cmyk(55%, 36.1%, 0%, 20.8%)
CIE-LAB	lab(54.23, 8.08, -41.92)
CIE-LCH	lch(54.23, 42.70, 280.90°)
OKLab	oklab(60.79% -0.0156 -0.1185)
OKLCH	oklch(60.79% 0.12 262.5)
XYZ	xyz(22.8217, 22.1872, 58.9456)
Luminance	0.2219 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B81CA #CAA45B

analogous

#5BB9CA #5B81CA #6C5BCA

triadic

#5B81CA #CA5B81 #81CA5B

tetradic

#5B81CA #CA5BB9 #CAA45B #5BCA6C

square

#5B81CA #CA5BB9 #CAA45B #5BCA6C

split-complementary

#5B81CA #CA6C5B #B9CA5B

monochromatic

#2A4881 #3961AF #5B81CA #89A5D9 #B8C8E8

Accessibility & contrast

On white

3.86

#5B81CA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.44

#5B81CA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B81CA

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B81CA	#FFFFFF	#000000	##000000
##5B81CA	1.00	3.86	5.44	5.44
#FFFFFF	3.86	1.00	21.00	21.00
#000000	5.44	21.00	1.00	1.00
##000000	5.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6387CD

Deuteranopia (green-blind)

#567DC8

Tritanopia (blue-blind)

#18919C

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #5b81ca;
/* rgb */ color: rgb(91, 129, 202);
/* oklch */ color: oklch(60.8% 0.120 262.5);

Tailwind

colors: {
  custom: {
    50: '#91a5da',
    500: '#5b81ca',
    950: '#000000',
  },
}

SCSS

$custom: #5b81ca;
$custom-light: #91a5da;
$custom-dark: #000000;

JSON

{
  "hex": "#5b81ca",
  "rgb": {
    "r": 91,
    "g": 129,
    "b": 202
  },
  "hsl": {
    "h": 219.459,
    "s": 51.152,
    "l": 57.451
  },
  "oklch": {
    "l": 0.60791,
    "c": 0.11957,
    "h": 262.5
  },
  "luminance": 0.22189
}

Semantic roles & 50–950 ramp

primary

#5B81CA

secondary

#D7C7AA

accent

#AA4DDB

background

#F9FAFD

surface

#F2F4FB

border

#CCCED4

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #5B81CA

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

Preview Lab → · Contrast checker → · Palette generator →