#1B1F86#1B1F86

#1B1F86 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.4% C 0.166 H 270.9°. Best body text is #FFFFFF at 13.23:1 contrast (WCAG AA passes).

Color values

HEX	#1B1F86
RGB	rgb(27, 31, 134)
HSL	hsl(238, 66%, 32%)
HSV	hsv(238, 80%, 53%)
CMYK	cmyk(79.9%, 76.9%, 0%, 47.5%)
CIE-LAB	lab(19.78, 36.13, -57.15)
CIE-LCH	lch(19.78, 67.62, 302.30°)
OKLab	oklab(32.37% 0.0026 -0.1655)
OKLCH	oklch(32.37% 0.166 270.9)
XYZ	xyz(5.2436, 2.9336, 22.8395)
Luminance	0.0293 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1F86 #86821B

analogous

#1B5586 #1B1F86 #4D1B86

triadic

#1B1F86 #861B1F #1F861B

tetradic

#1B1F86 #861B55 #86821B #1B864D

square

#1B1F86 #861B55 #86821B #1B864D

split-complementary

#1B1F86 #864D1B #55861B

monochromatic

#060720 #111353 #1B1F86 #252BB9 #4248D9

Accessibility & contrast

On white

13.23

#1B1F86 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1B1F86 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1F86

13.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1F86	#FFFFFF	#000000	##FFFFFF
##1B1F86	1.00	13.23	1.59	13.23
#FFFFFF	13.23	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003589

Deuteranopia (green-blind)

#002A84

Tritanopia (blue-blind)

#003D51

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1b1f86;
/* rgb */ color: rgb(27, 31, 134);
/* oklch */ color: oklch(32.4% 0.166 270.9);

Tailwind

colors: {
  custom: {
    50: '#6c5caa',
    500: '#1b1f86',
    950: '#000000',
  },
}

SCSS

$custom: #1b1f86;
$custom-light: #6c5caa;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1f86",
  "rgb": {
    "r": 27,
    "g": 31,
    "b": 134
  },
  "hsl": {
    "h": 237.757,
    "s": 66.46,
    "l": 31.569
  },
  "oklch": {
    "l": 0.32368,
    "c": 0.16551,
    "h": 270.9
  },
  "luminance": 0.02934
}

Semantic roles & 50–950 ramp

primary

#1B1F86

secondary

#B9B544

accent

#E33EE9

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1B1F86

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

Preview Lab → · Contrast checker → · Palette generator →