#04053B#04053B

#04053B is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 17.5% C 0.100 H 268.9°. Best body text is #FFFFFF at 19.27:1 contrast (WCAG AA passes).

Color values

HEX	#04053B
RGB	rgb(4, 5, 59)
HSL	hsl(239, 87%, 12%)
HSV	hsv(239, 93%, 23%)
CMYK	cmyk(93.2%, 91.5%, 0%, 76.9%)
CIE-LAB	lab(4.06, 19.04, -32.86)
CIE-LCH	lch(4.06, 37.97, 300.09°)
OKLab	oklab(17.5% -0.0019 -0.0997)
OKLCH	oklch(17.5% 0.1 268.9)
XYZ	xyz(0.8935, 0.4500, 4.1766)
Luminance	0.0045 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04053B #3B3A04

analogous

#04213B #04053B #1F043B

triadic

#04053B #3B0405 #053B04

tetradic

#04053B #3B0421 #3B3A04 #043B1F

square

#04053B #3B0421 #3B3A04 #043B1F

split-complementary

#04053B #3B1F04 #213B04

monochromatic

#02021D #02021D #04053B #080A74 #0C0FAE

Accessibility & contrast

On white

19.27

#04053B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#04053B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04053B

19.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04053B	#FFFFFF	#000000	##FFFFFF
##04053B	1.00	19.27	1.09	19.27
#FFFFFF	19.27	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00113D

Deuteranopia (green-blind)

#000B3A

Tritanopia (blue-blind)

#001620

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #04053b;
/* rgb */ color: rgb(4, 5, 59);
/* oklch */ color: oklch(17.5% 0.100 268.9);

Tailwind

colors: {
  custom: {
    50: '#4f4872',
    500: '#04053b',
    950: '#000000',
  },
}

SCSS

$custom: #04053b;
$custom-light: #4f4872;
$custom-dark: #000000;

JSON

{
  "hex": "#04053b",
  "rgb": {
    "r": 4,
    "g": 5,
    "b": 59
  },
  "hsl": {
    "h": 238.909,
    "s": 87.302,
    "l": 12.353
  },
  "oklch": {
    "l": 0.17502,
    "c": 0.09974,
    "h": 268.9
  },
  "luminance": 0.0045
}

Semantic roles & 50–950 ramp

primary

#04053B

secondary

#7D7B1E

accent

#FA2AFD

background

#F4F4F6

surface

#E7E6EC

border

#C3C2C7

text

#020008

muted

#78777B

Preview Lab

Preview with #04053B

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

Preview Lab → · Contrast checker → · Palette generator →