#1B033B#1B033B

#1B033B is a very dark, moderate violet. Relative luminance 0.006; OKLCH L 19.6% C 0.098 H 295.7°. Best body text is #FFFFFF at 18.70:1 contrast (WCAG AA passes).

Color values

HEX	#1B033B
RGB	rgb(27, 3, 59)
HSL	hsl(266, 90%, 12%)
HSV	hsv(266, 95%, 23%)
CMYK	cmyk(54.2%, 94.9%, 0%, 76.9%)
CIE-LAB	lab(5.55, 25.90, -30.37)
CIE-LCH	lch(5.55, 39.91, 310.46°)
OKLab	oklab(19.58% 0.0427 -0.0886)
OKLCH	oklch(19.58% 0.098 295.7)
XYZ	xyz(1.2738, 0.6139, 4.1882)
Luminance	0.0061 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.15

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B033B #233B03

analogous

#03073B #1B033B #37033B

triadic

#1B033B #3B1B03 #033B1B

tetradic

#1B033B #3B0307 #233B03 #033B37

square

#1B033B #3B0307 #233B03 #033B37

split-complementary

#1B033B #3B3703 #073B03

monochromatic

#0D011D #0D011D #1B033B #360675 #5009AF

Accessibility & contrast

On white

18.70

#1B033B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.12

#1B033B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B033B

18.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B033B	#FFFFFF	#000000	##FFFFFF
##1B033B	1.00	18.70	1.12	18.70
#FFFFFF	18.70	1.00	21.00	1.00
#000000	1.12	21.00	1.00	21.00
##FFFFFF	18.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00133D

Deuteranopia (green-blind)

#00113A

Tritanopia (blue-blind)

#12131F

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #1b033b;
/* rgb */ color: rgb(27, 3, 59);
/* oklch */ color: oklch(19.6% 0.098 295.7);

Tailwind

colors: {
  custom: {
    50: '#5c4771',
    500: '#1b033b',
    950: '#000000',
  },
}

SCSS

$custom: #1b033b;
$custom-light: #5c4771;
$custom-dark: #000000;

JSON

{
  "hex": "#1b033b",
  "rgb": {
    "r": 27,
    "g": 3,
    "b": 59
  },
  "hsl": {
    "h": 265.714,
    "s": 90.323,
    "l": 12.157
  },
  "oklch": {
    "l": 0.1958,
    "c": 0.09838,
    "h": 295.7
  },
  "luminance": 0.00614
}

Semantic roles & 50–950 ramp

primary

#1B033B

secondary

#547E1C

accent

#FF29A3

background

#F5F4F6

surface

#E9E6EC

border

#C5C2C7

text

#040008

muted

#79777B

Preview Lab

Preview with #1B033B

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

Preview Lab → · Contrast checker → · Palette generator →