#12043B#12043B

#12043B is a very dark, moderate violet. Relative luminance 0.005; OKLCH L 18.6% C 0.097 H 284.4°. Best body text is #FFFFFF at 18.98:1 contrast (WCAG AA passes).

Color values

HEX	#12043B
RGB	rgb(18, 4, 59)
HSL	hsl(255, 87%, 12%)
HSV	hsv(255, 93%, 23%)
CMYK	cmyk(69.5%, 93.2%, 0%, 76.9%)
CIE-LAB	lab(4.80, 22.83, -31.62)
CIE-LCH	lch(4.80, 39.01, 305.83°)
OKLab	oklab(18.61% 0.0242 -0.0939)
OKLCH	oklch(18.61% 0.097 284.4)
XYZ	xyz(1.0820, 0.5311, 4.1823)
Luminance	0.0053 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Night Blue

#040348

ΔE00 3.71

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12043B #2D3B04

analogous

#04113B #12043B #2E043B

triadic

#12043B #3B1204 #043B12

tetradic

#12043B #3B0411 #2D3B04 #043B2E

square

#12043B #3B0411 #2D3B04 #043B2E

split-complementary

#12043B #3B2E04 #113B04

monochromatic

#09021D #09021D #12043B #230874 #350CAE

Accessibility & contrast

On white

18.98

#12043B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#12043B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12043B

18.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12043B	#FFFFFF	#000000	##FFFFFF
##12043B	1.00	18.98	1.11	18.98
#FFFFFF	18.98	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00123D

Deuteranopia (green-blind)

#000F3A

Tritanopia (blue-blind)

#001420

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #12043b;
/* rgb */ color: rgb(18, 4, 59);
/* oklch */ color: oklch(18.6% 0.097 284.4);

Tailwind

colors: {
  custom: {
    50: '#564772',
    500: '#12043b',
    950: '#000000',
  },
}

SCSS

$custom: #12043b;
$custom-light: #564772;
$custom-dark: #000000;

JSON

{
  "hex": "#12043b",
  "rgb": {
    "r": 18,
    "g": 4,
    "b": 59
  },
  "hsl": {
    "h": 255.273,
    "s": 87.302,
    "l": 12.353
  },
  "oklch": {
    "l": 0.18606,
    "c": 0.097,
    "h": 284.4
  },
  "luminance": 0.00531
}

Semantic roles & 50–950 ramp

primary

#12043B

secondary

#657D1E

accent

#FD2AC8

background

#F5F4F6

surface

#E9E6EC

border

#C5C2C7

text

#030008

muted

#78777B

Preview Lab

Preview with #12043B

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

Preview Lab → · Contrast checker → · Palette generator →