#04133B#04133B

#04133B is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.5% C 0.080 H 263.7°. Best body text is #FFFFFF at 18.08:1 contrast (WCAG AA passes).

Color values

HEX	#04133B
RGB	rgb(4, 19, 59)
HSL	hsl(224, 87%, 12%)
HSV	hsv(224, 93%, 23%)
CMYK	cmyk(93.2%, 67.8%, 0%, 76.9%)
CIE-LAB	lab(7.29, 11.74, -27.61)
CIE-LCH	lch(7.29, 30.00, 293.03°)
OKLab	oklab(20.49% -0.0089 -0.08)
OKLCH	oklch(20.49% 0.08 263.7)
XYZ	xyz(1.0721, 0.8072, 4.2361)
Luminance	0.0081 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04133B #3B2C04

analogous

#042F3B #04133B #10043B

triadic

#04133B #3B0413 #133B04

tetradic

#04133B #3B042F #3B2C04 #043B10

square

#04133B #3B042F #3B2C04 #043B10

split-complementary

#04133B #3B1004 #2F3B04

monochromatic

#02091D #02091D #04133B #082574 #0C38AE

Accessibility & contrast

On white

18.08

#04133B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#04133B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04133B

18.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04133B	#FFFFFF	#000000	##FFFFFF
##04133B	1.00	18.08	1.16	18.08
#FFFFFF	18.08	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00193C

Deuteranopia (green-blind)

#00143A

Tritanopia (blue-blind)

#001D24

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #04133b;
/* rgb */ color: rgb(4, 19, 59);
/* oklch */ color: oklch(20.5% 0.080 263.7);

Tailwind

colors: {
  custom: {
    50: '#4f5071',
    500: '#04133b',
    950: '#000000',
  },
}

SCSS

$custom: #04133b;
$custom-light: #4f5071;
$custom-dark: #000000;

JSON

{
  "hex": "#04133b",
  "rgb": {
    "r": 4,
    "g": 19,
    "b": 59
  },
  "hsl": {
    "h": 223.636,
    "s": 87.302,
    "l": 12.353
  },
  "oklch": {
    "l": 0.20491,
    "c": 0.08045,
    "h": 263.7
  },
  "luminance": 0.00807
}

Semantic roles & 50–950 ramp

primary

#04133B

secondary

#7D631E

accent

#C42AFD

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020208

muted

#78787B

Preview Lab

Preview with #04133B

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

Preview Lab → · Contrast checker → · Palette generator →