#1B1053#1B1053

#1B1053 is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 24.3% C 0.114 H 281.2°. Best body text is #FFFFFF at 16.86:1 contrast (WCAG AA passes).

Color values

HEX	#1B1053
RGB	rgb(27, 16, 83)
HSL	hsl(250, 68%, 19%)
HSV	hsv(250, 81%, 33%)
CMYK	cmyk(67.5%, 80.7%, 0%, 67.5%)
CIE-LAB	lab(10.76, 27.10, -38.67)
CIE-LCH	lch(10.76, 47.22, 305.02°)
OKLab	oklab(24.26% 0.0222 -0.1115)
OKLCH	oklch(24.26% 0.114 281.2)
XYZ	xyz(2.1981, 1.2280, 8.3031)
Luminance	0.0123 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1053 #485310

analogous

#102753 #1B1053 #3D1053

triadic

#1B1053 #531B10 #10531B

tetradic

#1B1053 #531027 #485310 #10533D

square

#1B1053 #531027 #485310 #10533D

split-complementary

#1B1053 #533D10 #275310

monochromatic

#08051A #0A0620 #1B1053 #2C1A86 #3C24BA

Accessibility & contrast

On white

16.86

#1B1053 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#1B1053 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1053

16.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1053	#FFFFFF	#000000	##FFFFFF
##1B1053	1.00	16.86	1.25	16.86
#FFFFFF	16.86	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001F55

Deuteranopia (green-blind)

#001B52

Tritanopia (blue-blind)

#002330

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #1b1053;
/* rgb */ color: rgb(27, 16, 83);
/* oklch */ color: oklch(24.3% 0.114 281.2);

Tailwind

colors: {
  custom: {
    50: '#605084',
    500: '#1b1053',
    950: '#000000',
  },
}

SCSS

$custom: #1b1053;
$custom-light: #605084;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1053",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 83
  },
  "hsl": {
    "h": 249.851,
    "s": 67.677,
    "l": 19.412
  },
  "oklch": {
    "l": 0.2426,
    "c": 0.11372,
    "h": 281.2
  },
  "luminance": 0.01228
}

Semantic roles & 50–950 ramp

primary

#1B1053

secondary

#7E8D32

accent

#EB3DCE

background

#F6F4F8

surface

#EBE7EF

border

#C6C3CA

text

#05020B

muted

#7A787C

Preview Lab

Preview with #1B1053

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

Preview Lab → · Contrast checker → · Palette generator →