#04073B#04073B

#04073B is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 17.9% C 0.097 H 268.5°. Best body text is #FFFFFF at 19.11:1 contrast (WCAG AA passes).

Color values

HEX	#04073B
RGB	rgb(4, 7, 59)
HSL	hsl(237, 87%, 12%)
HSV	hsv(237, 93%, 23%)
CMYK	cmyk(93.2%, 88.1%, 0%, 76.9%)
CIE-LAB	lab(4.46, 18.20, -32.22)
CIE-LCH	lch(4.46, 37.00, 299.46°)
OKLab	oklab(17.92% -0.0026 -0.0969)
OKLCH	oklch(17.92% 0.097 268.5)
XYZ	xyz(0.9152, 0.4934, 4.1838)
Luminance	0.0049 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04073B #3B3804

analogous

#04233B #04073B #1C043B

triadic

#04073B #3B0407 #073B04

tetradic

#04073B #3B0423 #3B3804 #043B1C

square

#04073B #3B0423 #3B3804 #043B1C

split-complementary

#04073B #3B1C04 #233B04

monochromatic

#02031D #02031D #04073B #080E74 #0C15AE

Accessibility & contrast

On white

19.11

#04073B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#04073B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04073B

19.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04073B	#FFFFFF	#000000	##FFFFFF
##04073B	1.00	19.11	1.10	19.11
#FFFFFF	19.11	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00123C

Deuteranopia (green-blind)

#000C3A

Tritanopia (blue-blind)

#001720

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #04073b;
/* rgb */ color: rgb(4, 7, 59);
/* oklch */ color: oklch(17.9% 0.097 268.5);

Tailwind

colors: {
  custom: {
    50: '#4f4972',
    500: '#04073b',
    950: '#000000',
  },
}

SCSS

$custom: #04073b;
$custom-light: #4f4972;
$custom-dark: #000000;

JSON

{
  "hex": "#04073b",
  "rgb": {
    "r": 4,
    "g": 7,
    "b": 59
  },
  "hsl": {
    "h": 236.727,
    "s": 87.302,
    "l": 12.353
  },
  "oklch": {
    "l": 0.17921,
    "c": 0.09693,
    "h": 268.5
  },
  "luminance": 0.00494
}

Semantic roles & 50–950 ramp

primary

#04073B

secondary

#7D781E

accent

#F22AFD

background

#F4F4F6

surface

#E7E6EC

border

#C3C2C7

text

#020008

muted

#78777B

Preview Lab

Preview with #04073B

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

Preview Lab → · Contrast checker → · Palette generator →