#1B1B86#1B1B86

#1B1B86 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.8% C 0.169 H 271.4°. Best body text is #FFFFFF at 13.57:1 contrast (WCAG AA passes).

Color values

HEX	#1B1B86
RGB	rgb(27, 27, 134)
HSL	hsl(240, 66%, 32%)
HSV	hsv(240, 80%, 53%)
CMYK	cmyk(79.9%, 79.9%, 0%, 47.5%)
CIE-LAB	lab(18.96, 38.46, -58.50)
CIE-LCH	lch(18.96, 70.01, 303.32°)
OKLab	oklab(31.79% 0.0041 -0.1694)
OKLCH	oklch(31.79% 0.169 271.4)
XYZ	xyz(5.1455, 2.7375, 22.8068)
Luminance	0.0274 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1B86 #86861B

analogous

#1B5186 #1B1B86 #511B86

triadic

#1B1B86 #861B1B #1B861B

tetradic

#1B1B86 #861B51 #86861B #1B8651

square

#1B1B86 #861B51 #86861B #1B8651

split-complementary

#1B1B86 #86511B #51861B

monochromatic

#060620 #111153 #1B1B86 #2525B9 #4242D9

Accessibility & contrast

On white

13.57

#1B1B86 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#1B1B86 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1B86

13.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1B86	#FFFFFF	#000000	##FFFFFF
##1B1B86	1.00	13.57	1.55	13.57
#FFFFFF	13.57	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003389

Deuteranopia (green-blind)

#002984

Tritanopia (blue-blind)

#003C50

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1b1b86;
/* rgb */ color: rgb(27, 27, 134);
/* oklch */ color: oklch(31.8% 0.169 271.4);

Tailwind

colors: {
  custom: {
    50: '#6c59aa',
    500: '#1b1b86',
    950: '#000000',
  },
}

SCSS

$custom: #1b1b86;
$custom-light: #6c59aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1b86",
  "rgb": {
    "r": 27,
    "g": 27,
    "b": 134
  },
  "hsl": {
    "h": 240,
    "s": 66.46,
    "l": 31.569
  },
  "oklch": {
    "l": 0.31792,
    "c": 0.16942,
    "h": 271.4
  },
  "luminance": 0.02738
}

Semantic roles & 50–950 ramp

primary

#1B1B86

secondary

#B9B944

accent

#E93EE9

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #1B1B86

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

Preview Lab → · Contrast checker → · Palette generator →