#1B1059#1B1059

#1B1059 is a very dark, vivid blue. Relative luminance 0.013; OKLCH L 24.9% C 0.122 H 279.7°. Best body text is #FFFFFF at 16.60:1 contrast (WCAG AA passes).

Color values

HEX	#1B1059
RGB	rgb(27, 16, 89)
HSL	hsl(249, 70%, 21%)
HSV	hsv(249, 82%, 35%)
CMYK	cmyk(69.7%, 82%, 0%, 65.1%)
CIE-LAB	lab(11.45, 29.19, -41.62)
CIE-LCH	lch(11.45, 50.84, 305.04°)
OKLab	oklab(24.95% 0.0205 -0.1201)
OKLCH	oklch(24.95% 0.122 279.7)
XYZ	xyz(2.4399, 1.3247, 9.5764)
Luminance	0.0132 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1059 #4E5910

analogous

#102959 #1B1059 #3F1059

triadic

#1B1059 #591B10 #10591B

tetradic

#1B1059 #591029 #4E5910 #10593F

square

#1B1059 #591029 #4E5910 #10593F

split-complementary

#1B1059 #593F10 #295910

monochromatic

#08051A #0B0725 #1B1059 #2B198D #3A23C1

Accessibility & contrast

On white

16.60

#1B1059 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#1B1059 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1059

16.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1059	#FFFFFF	#000000	##FFFFFF
##1B1059	1.00	16.60	1.26	16.60
#FFFFFF	16.60	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00215B

Deuteranopia (green-blind)

#001C58

Tritanopia (blue-blind)

#002534

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #1b1059;
/* rgb */ color: rgb(27, 16, 89);
/* oklch */ color: oklch(24.9% 0.122 279.7);

Tailwind

colors: {
  custom: {
    50: '#625089',
    500: '#1b1059',
    950: '#000000',
  },
}

SCSS

$custom: #1b1059;
$custom-light: #625089;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1059",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 89
  },
  "hsl": {
    "h": 249.041,
    "s": 69.524,
    "l": 20.588
  },
  "oklch": {
    "l": 0.24948,
    "c": 0.12189,
    "h": 279.7
  },
  "luminance": 0.01325
}

Semantic roles & 50–950 ramp

primary

#1B1059

secondary

#849233

accent

#EC3BD2

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020B

muted

#7A787C

Preview Lab

Preview with #1B1059

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

Preview Lab → · Contrast checker → · Palette generator →