#04123F#04123F

#04123F is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.7% C 0.088 H 264.7°. Best body text is #FFFFFF at 18.05:1 contrast (WCAG AA passes).

Color values

HEX	#04123F
RGB	rgb(4, 18, 63)
HSL	hsl(226, 88%, 13%)
HSV	hsv(226, 94%, 25%)
CMYK	cmyk(93.7%, 71.4%, 0%, 75.3%)
CIE-LAB	lab(7.38, 14.44, -30.33)
CIE-LCH	lch(7.38, 33.59, 295.47°)
OKLab	oklab(20.69% -0.0081 -0.0879)
OKLCH	oklch(20.69% 0.088 264.7)
XYZ	xyz(1.1633, 0.8172, 4.7981)
Luminance	0.0082 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04123F #3F3104

analogous

#042F3F #04123F #13043F

triadic

#04123F #3F0412 #123F04

tetradic

#04123F #3F042F #3F3104 #043F13

square

#04123F #3F042F #3F3104 #043F13

split-complementary

#04123F #3F1304 #2F3F04

monochromatic

#02081D #02081D #04123F #082279 #0B33B2

Accessibility & contrast

On white

18.05

#04123F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#04123F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04123F

18.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04123F	#FFFFFF	#000000	##FFFFFF
##04123F	1.00	18.05	1.16	18.05
#FFFFFF	18.05	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001940

Deuteranopia (green-blind)

#00143E

Tritanopia (blue-blind)

#001E26

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #04123f;
/* rgb */ color: rgb(4, 18, 63);
/* oklch */ color: oklch(20.7% 0.088 264.7);

Tailwind

colors: {
  custom: {
    50: '#514f75',
    500: '#04123f',
    950: '#000000',
  },
}

SCSS

$custom: #04123f;
$custom-light: #514f75;
$custom-dark: #000000;

JSON

{
  "hex": "#04123f",
  "rgb": {
    "r": 4,
    "g": 18,
    "b": 63
  },
  "hsl": {
    "h": 225.763,
    "s": 88.06,
    "l": 13.137
  },
  "oklch": {
    "l": 0.20689,
    "c": 0.08828,
    "h": 264.7
  },
  "luminance": 0.00817
}

Semantic roles & 50–950 ramp

primary

#04123F

secondary

#80691E

accent

#CC2AFE

background

#F4F4F7

surface

#E7E7ED

border

#C3C3C8

text

#020108

muted

#78777B

Preview Lab

Preview with #04123F

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

Preview Lab → · Contrast checker → · Palette generator →