#1B033A#1B033A

#1B033A is a very dark, moderate violet. Relative luminance 0.006; OKLCH L 19.5% C 0.097 H 296.4°. Best body text is #FFFFFF at 18.74:1 contrast (WCAG AA passes).

Color values

HEX	#1B033A
RGB	rgb(27, 3, 58)
HSL	hsl(266, 90%, 12%)
HSV	hsv(266, 95%, 23%)
CMYK	cmyk(53.4%, 94.8%, 0%, 77.3%)
CIE-LAB	lab(5.45, 25.49, -29.79)
CIE-LCH	lch(5.45, 39.21, 310.56°)
OKLab	oklab(19.46% 0.0432 -0.0871)
OKLCH	oklch(19.46% 0.097 296.4)
XYZ	xyz(1.2481, 0.6036, 4.0529)
Luminance	0.0060 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.14

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B033A #223A03

analogous

#03063A #1B033A #37033A

triadic

#1B033A #3A1B03 #033A1B

tetradic

#1B033A #3A0306 #223A03 #033A37

square

#1B033A #3A0306 #223A03 #033A37

split-complementary

#1B033A #3A3703 #063A03

monochromatic

#0E021D #0E021D #1B033A #360674 #5109AE

Accessibility & contrast

On white

18.74

#1B033A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.12

#1B033A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B033A

18.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B033A	#FFFFFF	#000000	##FFFFFF
##1B033A	1.00	18.74	1.12	18.74
#FFFFFF	18.74	1.00	21.00	1.00
#000000	1.12	21.00	1.00	21.00
##FFFFFF	18.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00123B

Deuteranopia (green-blind)

#001139

Tritanopia (blue-blind)

#12121F

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #1b033a;
/* rgb */ color: rgb(27, 3, 58);
/* oklch */ color: oklch(19.5% 0.097 296.4);

Tailwind

colors: {
  custom: {
    50: '#5b4771',
    500: '#1b033a',
    950: '#000000',
  },
}

SCSS

$custom: #1b033a;
$custom-light: #5b4771;
$custom-dark: #000000;

JSON

{
  "hex": "#1b033a",
  "rgb": {
    "r": 27,
    "g": 3,
    "b": 58
  },
  "hsl": {
    "h": 266.182,
    "s": 90.164,
    "l": 11.961
  },
  "oklch": {
    "l": 0.19462,
    "c": 0.0972,
    "h": 296.4
  },
  "luminance": 0.00604
}

Semantic roles & 50–950 ramp

primary

#1B033A

secondary

#537D1C

accent

#FF29A2

background

#F5F4F6

surface

#E9E6EC

border

#C5C2C7

text

#040007

muted

#79777A

Preview Lab

Preview with #1B033A

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

Preview Lab → · Contrast checker → · Palette generator →