#1B1066#1B1066

#1B1066 is a dark, vivid blue. Relative luminance 0.016; OKLCH L 26.5% C 0.139 H 276.9°. Best body text is #FFFFFF at 16.00:1 contrast (WCAG AA passes).

Color values

HEX	#1B1066
RGB	rgb(27, 16, 102)
HSL	hsl(248, 73%, 23%)
HSV	hsv(248, 84%, 40%)
CMYK	cmyk(73.5%, 84.3%, 0%, 60%)
CIE-LAB	lab(13.00, 33.62, -47.74)
CIE-LCH	lch(13.00, 58.39, 305.15°)
OKLab	oklab(26.49% 0.0167 -0.138)
OKLCH	oklch(26.49% 0.139 276.9)
XYZ	xyz(3.0348, 1.5626, 12.7095)
Luminance	0.0156 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1066 #5B6610

analogous

#103066 #1B1066 #461066

triadic

#1B1066 #661B10 #10661B

tetradic

#1B1066 #661030 #5B6610 #106646

square

#1B1066 #661030 #5B6610 #106646

split-complementary

#1B1066 #664610 #306610

monochromatic

#07041A #0D0831 #1B1066 #29189B #3721D0

Accessibility & contrast

On white

16.00

#1B1066 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#1B1066 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1066

16.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1066	#FFFFFF	#000000	##FFFFFF
##1B1066	1.00	16.00	1.31	16.00
#FFFFFF	16.00	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002568

Deuteranopia (green-blind)

#001E65

Tritanopia (blue-blind)

#002A3B

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #1b1066;
/* rgb */ color: rgb(27, 16, 102);
/* oklch */ color: oklch(26.5% 0.139 276.9);

Tailwind

colors: {
  custom: {
    50: '#655193',
    500: '#1b1066',
    950: '#000000',
  },
}

SCSS

$custom: #1b1066;
$custom-light: #655193;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1066",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 102
  },
  "hsl": {
    "h": 247.674,
    "s": 72.881,
    "l": 23.137
  },
  "oklch": {
    "l": 0.26493,
    "c": 0.13898,
    "h": 276.9
  },
  "luminance": 0.01563
}

Semantic roles & 50–950 ramp

primary

#1B1066

secondary

#919E33

accent

#F038D8

background

#F6F4F9

surface

#EBE7F1

border

#C6C3CB

text

#06020D

muted

#7A787E

Preview Lab

Preview with #1B1066

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

Preview Lab → · Contrast checker → · Palette generator →