#1B1056#1B1056

#1B1056 is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.6% C 0.118 H 280.4°. Best body text is #FFFFFF at 16.73:1 contrast (WCAG AA passes).

Color values

HEX	#1B1056
RGB	rgb(27, 16, 86)
HSL	hsl(249, 69%, 20%)
HSV	hsv(249, 81%, 34%)
CMYK	cmyk(68.6%, 81.4%, 0%, 66.3%)
CIE-LAB	lab(11.10, 28.15, -40.16)
CIE-LCH	lch(11.10, 49.04, 305.03°)
OKLab	oklab(24.6% 0.0214 -0.1159)
OKLCH	oklch(24.6% 0.118 280.4)
XYZ	xyz(2.3165, 1.2753, 8.9264)
Luminance	0.0127 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1056 #4B5610

analogous

#102856 #1B1056 #3E1056

triadic

#1B1056 #561B10 #10561B

tetradic

#1B1056 #561028 #4B5610 #10563E

square

#1B1056 #561028 #4B5610 #10563E

split-complementary

#1B1056 #563E10 #285610

monochromatic

#08051A #0B0622 #1B1056 #2B1A8A #3B23BD

Accessibility & contrast

On white

16.73

#1B1056 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#1B1056 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1056

16.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1056	#FFFFFF	#000000	##FFFFFF
##1B1056	1.00	16.73	1.25	16.73
#FFFFFF	16.73	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002058

Deuteranopia (green-blind)

#001B55

Tritanopia (blue-blind)

#002432

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #1b1056;
/* rgb */ color: rgb(27, 16, 86);
/* oklch */ color: oklch(24.6% 0.118 280.4);

Tailwind

colors: {
  custom: {
    50: '#615086',
    500: '#1b1056',
    950: '#000000',
  },
}

SCSS

$custom: #1b1056;
$custom-light: #615086;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1056",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 86
  },
  "hsl": {
    "h": 249.429,
    "s": 68.627,
    "l": 20
  },
  "oklch": {
    "l": 0.24602,
    "c": 0.11783,
    "h": 280.4
  },
  "luminance": 0.01275
}

Semantic roles & 50–950 ramp

primary

#1B1056

secondary

#818F32

accent

#EB3CD0

background

#F6F4F8

surface

#EBE7EF

border

#C6C3CA

text

#05020B

muted

#7A787C

Preview Lab

Preview with #1B1056

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

Preview Lab → · Contrast checker → · Palette generator →