#04073F#04073F

#04073F is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 18.5% C 0.103 H 268.1°. Best body text is #FFFFFF at 18.96:1 contrast (WCAG AA passes).

Color values

HEX	#04073F
RGB	rgb(4, 7, 63)
HSL	hsl(237, 88%, 13%)
HSV	hsv(237, 94%, 25%)
CMYK	cmyk(93.7%, 88.9%, 0%, 75.3%)
CIE-LAB	lab(4.85, 20.54, -34.47)
CIE-LCH	lch(4.85, 40.12, 300.79°)
OKLab	oklab(18.48% -0.0033 -0.1026)
OKLCH	oklch(18.48% 0.103 268.1)
XYZ	xyz(1.0229, 0.5365, 4.7513)
Luminance	0.0054 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04073F #3F3C04

analogous

#04243F #04073F #1E043F

triadic

#04073F #3F0407 #073F04

tetradic

#04073F #3F0424 #3F3C04 #043F1E

square

#04073F #3F0424 #3F3C04 #043F1E

split-complementary

#04073F #3F1E04 #243F04

monochromatic

#02031D #02031D #04073F #080D79 #0B14B2

Accessibility & contrast

On white

18.96

#04073F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#04073F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04073F

18.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04073F	#FFFFFF	#000000	##FFFFFF
##04073F	1.00	18.96	1.11	18.96
#FFFFFF	18.96	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001341

Deuteranopia (green-blind)

#000D3E

Tritanopia (blue-blind)

#001823

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #04073f;
/* rgb */ color: rgb(4, 7, 63);
/* oklch */ color: oklch(18.5% 0.103 268.1);

Tailwind

colors: {
  custom: {
    50: '#514875',
    500: '#04073f',
    950: '#000000',
  },
}

SCSS

$custom: #04073f;
$custom-light: #514875;
$custom-dark: #000000;

JSON

{
  "hex": "#04073f",
  "rgb": {
    "r": 4,
    "g": 7,
    "b": 63
  },
  "hsl": {
    "h": 236.949,
    "s": 88.06,
    "l": 13.137
  },
  "oklch": {
    "l": 0.18477,
    "c": 0.10263,
    "h": 268.1
  },
  "luminance": 0.00537
}

Semantic roles & 50–950 ramp

primary

#04073F

secondary

#807B1E

accent

#F32AFE

background

#F4F4F7

surface

#E7E6ED

border

#C3C2C8

text

#030008

muted

#78777B

Preview Lab

Preview with #04073F

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

Preview Lab → · Contrast checker → · Palette generator →