#1B1477#1B1477

#1B1477 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.1% C 0.157 H 273.7°. Best body text is #FFFFFF at 14.86:1 contrast (WCAG AA passes).

Color values

HEX	#1B1477
RGB	rgb(27, 20, 119)
HSL	hsl(244, 71%, 27%)
HSV	hsv(244, 83%, 47%)
CMYK	cmyk(77.3%, 83.2%, 0%, 53.3%)
CIE-LAB	lab(15.82, 37.19, -54.15)
CIE-LCH	lch(15.82, 65.69, 304.48°)
OKLab	oklab(29.07% 0.0102 -0.1566)
OKLCH	oklch(29.07% 0.157 273.7)
XYZ	xyz(4.0308, 2.0648, 17.6353)
Luminance	0.0207 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1477 #707714

analogous

#143F77 #1B1477 #4C1477

triadic

#1B1477 #771B14 #14771B

tetradic

#1B1477 #77143F #707714 #14774C

square

#1B1477 #77143F #707714 #14774C

split-complementary

#1B1477 #774C14 #3F7714

monochromatic

#06041A #0F0B43 #1B1477 #271DAB #372ADB

Accessibility & contrast

On white

14.86

#1B1477 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#1B1477 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1477

14.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1477	#FFFFFF	#000000	##FFFFFF
##1B1477	1.00	14.86	1.41	14.86
#FFFFFF	14.86	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C7A

Deuteranopia (green-blind)

#002375

Tritanopia (blue-blind)

#003346

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1b1477;
/* rgb */ color: rgb(27, 20, 119);
/* oklch */ color: oklch(29.1% 0.157 273.7);

Tailwind

colors: {
  custom: {
    50: '#69549f',
    500: '#1b1477',
    950: '#000000',
  },
}

SCSS

$custom: #1b1477;
$custom-light: #69549f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1477",
  "rgb": {
    "r": 27,
    "g": 20,
    "b": 119
  },
  "hsl": {
    "h": 244.242,
    "s": 71.223,
    "l": 27.255
  },
  "oklch": {
    "l": 0.29069,
    "c": 0.15697,
    "h": 273.7
  },
  "luminance": 0.02065
}

Semantic roles & 50–950 ramp

primary

#1B1477

secondary

#A5AD3A

accent

#EE3AE1

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030F

muted

#7A787E

Preview Lab

Preview with #1B1477

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

Preview Lab → · Contrast checker → · Palette generator →