#04133F#04133F

#04133F is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 20.9% C 0.087 H 264.2°. Best body text is #FFFFFF at 17.95:1 contrast (WCAG AA passes).

Color values

HEX	#04133F
RGB	rgb(4, 19, 63)
HSL	hsl(225, 88%, 13%)
HSV	hsv(225, 94%, 25%)
CMYK	cmyk(93.7%, 69.8%, 0%, 75.3%)
CIE-LAB	lab(7.68, 13.70, -29.84)
CIE-LCH	lch(7.68, 32.83, 294.66°)
OKLab	oklab(20.92% -0.0087 -0.0864)
OKLCH	oklch(20.92% 0.087 264.2)
XYZ	xyz(1.1798, 0.8503, 4.8036)
Luminance	0.0085 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04133F #3F3004

analogous

#04303F #04133F #12043F

triadic

#04133F #3F0413 #133F04

tetradic

#04133F #3F0430 #3F3004 #043F12

square

#04133F #3F0430 #3F3004 #043F12

split-complementary

#04133F #3F1204 #303F04

monochromatic

#02091D #02091D #04133F #082479 #0B36B2

Accessibility & contrast

On white

17.95

#04133F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#04133F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04133F

17.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04133F	#FFFFFF	#000000	##FFFFFF
##04133F	1.00	17.95	1.17	17.95
#FFFFFF	17.95	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001A40

Deuteranopia (green-blind)

#00143E

Tritanopia (blue-blind)

#001E26

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #04133f;
/* rgb */ color: rgb(4, 19, 63);
/* oklch */ color: oklch(20.9% 0.087 264.2);

Tailwind

colors: {
  custom: {
    50: '#515074',
    500: '#04133f',
    950: '#000000',
  },
}

SCSS

$custom: #04133f;
$custom-light: #515074;
$custom-dark: #000000;

JSON

{
  "hex": "#04133f",
  "rgb": {
    "r": 4,
    "g": 19,
    "b": 63
  },
  "hsl": {
    "h": 224.746,
    "s": 88.06,
    "l": 13.137
  },
  "oklch": {
    "l": 0.20921,
    "c": 0.08684,
    "h": 264.2
  },
  "luminance": 0.0085
}

Semantic roles & 50–950 ramp

primary

#04133F

secondary

#80671E

accent

#C82AFE

background

#F4F4F7

surface

#E7E7ED

border

#C3C3C8

text

#020208

muted

#78787B

Preview Lab

Preview with #04133F

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

Preview Lab → · Contrast checker → · Palette generator →