#1B1877#1B1877

#1B1877 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.6% C 0.153 H 273.2°. Best body text is #FFFFFF at 14.55:1 contrast (WCAG AA passes).

Color values

HEX	#1B1877
RGB	rgb(27, 24, 119)
HSL	hsl(242, 66%, 28%)
HSV	hsv(242, 80%, 47%)
CMYK	cmyk(77.3%, 79.8%, 0%, 53.3%)
CIE-LAB	lab(16.59, 34.98, -52.88)
CIE-LCH	lch(16.59, 63.40, 303.48°)
OKLab	oklab(29.6% 0.0085 -0.153)
OKLCH	oklch(29.6% 0.153 273.2)
XYZ	xyz(4.1073, 2.2178, 17.6608)
Luminance	0.0222 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1877 #747718

analogous

#184477 #1B1877 #4A1877

triadic

#1B1877 #771B18 #18771B

tetradic

#1B1877 #771844 #747718 #18774A

square

#1B1877 #771844 #747718 #18774A

split-complementary

#1B1877 #774A18 #447718

monochromatic

#060519 #0F0E44 #1B1877 #2722AA #3933D6

Accessibility & contrast

On white

14.55

#1B1877 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#1B1877 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1877

14.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1877	#FFFFFF	#000000	##FFFFFF
##1B1877	1.00	14.55	1.44	14.55
#FFFFFF	14.55	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D7A

Deuteranopia (green-blind)

#002475

Tritanopia (blue-blind)

#003447

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1b1877;
/* rgb */ color: rgb(27, 24, 119);
/* oklch */ color: oklch(29.6% 0.153 273.2);

Tailwind

colors: {
  custom: {
    50: '#69579f',
    500: '#1b1877',
    950: '#000000',
  },
}

SCSS

$custom: #1b1877;
$custom-light: #69579f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1877",
  "rgb": {
    "r": 27,
    "g": 24,
    "b": 119
  },
  "hsl": {
    "h": 241.895,
    "s": 66.434,
    "l": 28.039
  },
  "oklch": {
    "l": 0.29605,
    "c": 0.15325,
    "h": 273.2
  },
  "luminance": 0.02218
}

Semantic roles & 50–950 ramp

primary

#1B1877

secondary

#A9AC3F

accent

#E93EE4

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030F

muted

#7A787E

Preview Lab

Preview with #1B1877

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

Preview Lab → · Contrast checker → · Palette generator →