#1B1180#1B1180

#1B1180 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.8% C 0.170 H 272.9°. Best body text is #FFFFFF at 14.60:1 contrast (WCAG AA passes).

Color values

HEX	#1B1180
RGB	rgb(27, 17, 128)
HSL	hsl(245, 77%, 28%)
HSV	hsv(245, 87%, 50%)
CMYK	cmyk(78.9%, 86.7%, 0%, 49.8%)
CIE-LAB	lab(16.46, 41.58, -58.85)
CIE-LCH	lch(16.46, 72.06, 305.25°)
OKLab	oklab(29.84% 0.0086 -0.1702)
OKLCH	oklch(29.84% 0.17 272.9)
XYZ	xyz(4.5474, 2.1919, 20.6013)
Luminance	0.0219 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1180 #768011

analogous

#113E80 #1B1180 #521180

triadic

#1B1180 #801B11 #11801B

tetradic

#1B1180 #80113E #768011 #118052

square

#1B1180 #80113E #768011 #118052

split-complementary

#1B1180 #805211 #3E8011

monochromatic

#06041B #100A4A #1B1180 #2618B6 #3A29E3

Accessibility & contrast

On white

14.60

#1B1180 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#1B1180 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1180

14.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1180	#FFFFFF	#000000	##FFFFFF
##1B1180	1.00	14.60	1.44	14.60
#FFFFFF	14.60	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E83

Deuteranopia (green-blind)

#00237E

Tritanopia (blue-blind)

#00354B

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1b1180;
/* rgb */ color: rgb(27, 17, 128);
/* oklch */ color: oklch(29.8% 0.170 272.9);

Tailwind

colors: {
  custom: {
    50: '#6c54a6',
    500: '#1b1180',
    950: '#000000',
  },
}

SCSS

$custom: #1b1180;
$custom-light: #6c54a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1180",
  "rgb": {
    "r": 27,
    "g": 17,
    "b": 128
  },
  "hsl": {
    "h": 245.405,
    "s": 76.552,
    "l": 28.431
  },
  "oklch": {
    "l": 0.2984,
    "c": 0.17041,
    "h": 272.9
  },
  "luminance": 0.02192
}

Semantic roles & 50–950 ramp

primary

#1B1180

secondary

#AAB637

accent

#F335E2

background

#F7F4FA

surface

#EDE8F4

border

#C8C4CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #1B1180

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

Preview Lab → · Contrast checker → · Palette generator →