#1B1058#1B1058

#1B1058 is a very dark, vivid blue. Relative luminance 0.013; OKLCH L 24.8% C 0.121 H 279.9°. Best body text is #FFFFFF at 16.65:1 contrast (WCAG AA passes).

Color values

HEX	#1B1058
RGB	rgb(27, 16, 88)
HSL	hsl(249, 69%, 20%)
HSV	hsv(249, 82%, 35%)
CMYK	cmyk(69.3%, 81.8%, 0%, 65.5%)
CIE-LAB	lab(11.33, 28.84, -41.13)
CIE-LCH	lch(11.33, 50.24, 305.04°)
OKLab	oklab(24.83% 0.0208 -0.1187)
OKLCH	oklch(24.83% 0.121 279.9)
XYZ	xyz(2.3982, 1.3080, 9.3567)
Luminance	0.0131 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1058 #4D5810

analogous

#102958 #1B1058 #3F1058

triadic

#1B1058 #581B10 #10581B

tetradic

#1B1058 #581029 #4D5810 #10583F

square

#1B1058 #581029 #4D5810 #10583F

split-complementary

#1B1058 #583F10 #295810

monochromatic

#08051A #0B0724 #1B1058 #2B198C #3B23C0

Accessibility & contrast

On white

16.65

#1B1058 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#1B1058 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1058

16.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1058	#FFFFFF	#000000	##FFFFFF
##1B1058	1.00	16.65	1.26	16.65
#FFFFFF	16.65	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00215A

Deuteranopia (green-blind)

#001B57

Tritanopia (blue-blind)

#002533

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #1b1058;
/* rgb */ color: rgb(27, 16, 88);
/* oklch */ color: oklch(24.8% 0.121 279.9);

Tailwind

colors: {
  custom: {
    50: '#615088',
    500: '#1b1058',
    950: '#000000',
  },
}

SCSS

$custom: #1b1058;
$custom-light: #615088;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1058",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 88
  },
  "hsl": {
    "h": 249.167,
    "s": 69.231,
    "l": 20.392
  },
  "oklch": {
    "l": 0.24832,
    "c": 0.12055,
    "h": 279.9
  },
  "luminance": 0.01308
}

Semantic roles & 50–950 ramp

primary

#1B1058

secondary

#839132

accent

#EC3CD1

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020B

muted

#7A787C

Preview Lab

Preview with #1B1058

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

Preview Lab → · Contrast checker → · Palette generator →