#04123A#04123A

#04123A is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.1% C 0.080 H 264.1°. Best body text is #FFFFFF at 18.22:1 contrast (WCAG AA passes).

Color values

HEX	#04123A
RGB	rgb(4, 18, 58)
HSL	hsl(224, 87%, 12%)
HSV	hsv(224, 93%, 23%)
CMYK	cmyk(93.1%, 69%, 0%, 77.3%)
CIE-LAB	lab(6.90, 11.93, -27.53)
CIE-LCH	lch(6.90, 30.00, 293.44°)
OKLab	oklab(20.14% -0.0082 -0.0799)
OKLCH	oklch(20.14% 0.08 264.1)
XYZ	xyz(1.0298, 0.7638, 4.0953)
Luminance	0.0076 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04123A #3A2C04

analogous

#042D3A #04123A #11043A

triadic

#04123A #3A0412 #123A04

tetradic

#04123A #3A042D #3A2C04 #043A11

square

#04123A #3A042D #3A2C04 #043A11

split-complementary

#04123A #3A1104 #2D3A04

monochromatic

#02091D #02091D #04123A #082473 #0C36AD

Accessibility & contrast

On white

18.22

#04123A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#04123A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04123A

18.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04123A	#FFFFFF	#000000	##FFFFFF
##04123A	1.00	18.22	1.15	18.22
#FFFFFF	18.22	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00183B

Deuteranopia (green-blind)

#001339

Tritanopia (blue-blind)

#001C23

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #04123a;
/* rgb */ color: rgb(4, 18, 58);
/* oklch */ color: oklch(20.1% 0.080 264.1);

Tailwind

colors: {
  custom: {
    50: '#4f4f71',
    500: '#04123a',
    950: '#000000',
  },
}

SCSS

$custom: #04123a;
$custom-light: #4f4f71;
$custom-dark: #000000;

JSON

{
  "hex": "#04123a",
  "rgb": {
    "r": 4,
    "g": 18,
    "b": 58
  },
  "hsl": {
    "h": 224.444,
    "s": 87.097,
    "l": 12.157
  },
  "oklch": {
    "l": 0.20141,
    "c": 0.08032,
    "h": 264.1
  },
  "luminance": 0.00764
}

Semantic roles & 50–950 ramp

primary

#04123A

secondary

#7C631E

accent

#C72BFD

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020107

muted

#78777A

Preview Lab

Preview with #04123A

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

Preview Lab → · Contrast checker → · Palette generator →