#1B1D87#1B1D87

#1B1D87 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.2% C 0.169 H 271.1°. Best body text is #FFFFFF at 13.36:1 contrast (WCAG AA passes).

Color values

HEX	#1B1D87
RGB	rgb(27, 29, 135)
HSL	hsl(239, 67%, 32%)
HSV	hsv(239, 80%, 53%)
CMYK	cmyk(80%, 78.5%, 0%, 47.1%)
CIE-LAB	lab(19.48, 37.66, -58.28)
CIE-LCH	lch(19.48, 69.39, 302.87°)
OKLab	oklab(32.19% 0.0031 -0.1687)
OKLCH	oklch(32.19% 0.169 271.1)
XYZ	xyz(5.2631, 2.8604, 23.1917)
Luminance	0.0286 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1D87 #87851B

analogous

#1B5387 #1B1D87 #4F1B87

triadic

#1B1D87 #871B1D #1D871B

tetradic

#1B1D87 #871B53 #87851B #1B874F

square

#1B1D87 #871B53 #87851B #1B874F

split-complementary

#1B1D87 #874F1B #53871B

monochromatic

#070721 #111254 #1B1D87 #2528BA #4346D9

Accessibility & contrast

On white

13.36

#1B1D87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1B1D87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1D87

13.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1D87	#FFFFFF	#000000	##FFFFFF
##1B1D87	1.00	13.36	1.57	13.36
#FFFFFF	13.36	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00348A

Deuteranopia (green-blind)

#002A85

Tritanopia (blue-blind)

#003D51

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b1d87;
/* rgb */ color: rgb(27, 29, 135);
/* oklch */ color: oklch(32.2% 0.169 271.1);

Tailwind

colors: {
  custom: {
    50: '#6c5bab',
    500: '#1b1d87',
    950: '#000000',
  },
}

SCSS

$custom: #1b1d87;
$custom-light: #6c5bab;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1d87",
  "rgb": {
    "r": 27,
    "g": 29,
    "b": 135
  },
  "hsl": {
    "h": 238.889,
    "s": 66.667,
    "l": 31.765
  },
  "oklch": {
    "l": 0.32189,
    "c": 0.16877,
    "h": 271.1
  },
  "luminance": 0.02861
}

Semantic roles & 50–950 ramp

primary

#1B1D87

secondary

#BAB844

accent

#E63EEA

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1B1D87

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

Preview Lab → · Contrast checker → · Palette generator →