#1B1C87#1B1C87

#1B1C87 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.0% C 0.170 H 271.2°. Best body text is #FFFFFF at 13.44:1 contrast (WCAG AA passes).

Color values

HEX	#1B1C87
RGB	rgb(27, 28, 135)
HSL	hsl(239, 67%, 32%)
HSV	hsv(239, 80%, 53%)
CMYK	cmyk(80%, 79.3%, 0%, 47.1%)
CIE-LAB	lab(19.28, 38.24, -58.61)
CIE-LCH	lch(19.28, 69.98, 303.12°)
OKLab	oklab(32.05% 0.0035 -0.1697)
OKLCH	oklch(32.05% 0.17 271.2)
XYZ	xyz(5.2389, 2.8122, 23.1837)
Luminance	0.0281 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1C87 #87861B

analogous

#1B5287 #1B1C87 #501B87

triadic

#1B1C87 #871B1C #1C871B

tetradic

#1B1C87 #871B52 #87861B #1B8750

square

#1B1C87 #871B52 #87861B #1B8750

split-complementary

#1B1C87 #87501B #52871B

monochromatic

#070721 #111154 #1B1C87 #2527BA #4344D9

Accessibility & contrast

On white

13.44

#1B1C87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1B1C87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1C87

13.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1C87	#FFFFFF	#000000	##FFFFFF
##1B1C87	1.00	13.44	1.56	13.44
#FFFFFF	13.44	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00348A

Deuteranopia (green-blind)

#002985

Tritanopia (blue-blind)

#003C51

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b1c87;
/* rgb */ color: rgb(27, 28, 135);
/* oklch */ color: oklch(32.0% 0.170 271.2);

Tailwind

colors: {
  custom: {
    50: '#6c5aab',
    500: '#1b1c87',
    950: '#000000',
  },
}

SCSS

$custom: #1b1c87;
$custom-light: #6c5aab;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1c87",
  "rgb": {
    "r": 27,
    "g": 28,
    "b": 135
  },
  "hsl": {
    "h": 239.444,
    "s": 66.667,
    "l": 31.765
  },
  "oklch": {
    "l": 0.32048,
    "c": 0.16973,
    "h": 271.2
  },
  "luminance": 0.02813
}

Semantic roles & 50–950 ramp

primary

#1B1C87

secondary

#BAB944

accent

#E83EEA

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1B1C87

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

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