#040123#040123

#040123 is a very dark, moderate blue. Relative luminance 0.002; OKLCH L 12.8% C 0.073 H 276.5°. Best body text is #FFFFFF at 20.31:1 contrast (WCAG AA passes).

Color values

HEX	#040123
RGB	rgb(4, 1, 35)
HSL	hsl(245, 94%, 7%)
HSV	hsv(245, 97%, 14%)
CMYK	cmyk(88.6%, 97.1%, 0%, 86.3%)
CIE-LAB	lab(1.52, 8.35, -18.80)
CIE-LCH	lch(1.52, 20.57, 293.93°)
OKLab	oklab(12.76% 0.0082 -0.0728)
OKLCH	oklch(12.76% 0.073 276.5)
XYZ	xyz(0.3642, 0.1688, 1.6032)
Luminance	0.0017 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040123 #202301

analogous

#010F23 #040123 #150123

triadic

#040123 #230401 #012304

tetradic

#040123 #23010F #202301 #012315

square

#040123 #23010F #202301 #012315

split-complementary

#040123 #231501 #0F2301

monochromatic

#03011E #03011E #040123 #0B035F #12049A

Accessibility & contrast

On white

20.31

#040123 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.03

#040123 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040123

20.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040123	#FFFFFF	#000000	##FFFFFF
##040123	1.00	20.31	1.03	20.31
#FFFFFF	20.31	1.00	21.00	1.00
#000000	1.03	21.00	1.00	21.00
##FFFFFF	20.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000724

Deuteranopia (green-blind)

#000422

Tritanopia (blue-blind)

#000910

Achromatopsia (no color)

#060606

Design tokens & code

CSS

--color: #040123;
/* rgb */ color: rgb(4, 1, 35);
/* oklch */ color: oklch(12.8% 0.073 276.5);

Tailwind

colors: {
  custom: {
    50: '#48475e',
    500: '#040123',
    950: '#000000',
  },
}

SCSS

$custom: #040123;
$custom-light: #48475e;
$custom-dark: #000000;

JSON

{
  "hex": "#040123",
  "rgb": {
    "r": 4,
    "g": 1,
    "b": 35
  },
  "hsl": {
    "h": 245.294,
    "s": 94.444,
    "l": 7.059
  },
  "oklch": {
    "l": 0.12762,
    "c": 0.07326,
    "h": 276.5
  },
  "luminance": 0.00169
}

Semantic roles & 50–950 ramp

primary

#040123

secondary

#636A16

accent

#FF29EC

background

#F4F3F5

surface

#E6E5E9

border

#C2C1C5

text

#000004

muted

#777779

Preview Lab

Preview with #040123

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

Preview Lab → · Contrast checker → · Palette generator →