#09043B#09043B

#09043B is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 17.7% C 0.099 H 274.6°. Best body text is #FFFFFF at 19.23:1 contrast (WCAG AA passes).

Color values

HEX	#09043B
RGB	rgb(9, 4, 59)
HSL	hsl(245, 87%, 12%)
HSV	hsv(245, 93%, 23%)
CMYK	cmyk(84.7%, 93.2%, 0%, 76.9%)
CIE-LAB	lab(4.16, 20.62, -32.69)
CIE-LCH	lch(4.16, 38.65, 302.25°)
OKLab	oklab(17.73% 0.008 -0.0988)
OKLCH	oklch(17.73% 0.099 274.6)
XYZ	xyz(0.9452, 0.4606, 4.1759)
Luminance	0.0046 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#09043B #363B04

analogous

#041A3B #09043B #25043B

triadic

#09043B #3B0904 #043B09

tetradic

#09043B #3B041A #363B04 #043B25

square

#09043B #3B041A #363B04 #043B25

split-complementary

#09043B #3B2504 #1A3B04

monochromatic

#04021D #04021D #09043B #120874 #1A0CAE

Accessibility & contrast

On white

19.23

#09043B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#09043B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #09043B

19.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##09043B	#FFFFFF	#000000	##FFFFFF
##09043B	1.00	19.23	1.09	19.23
#FFFFFF	19.23	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00113D

Deuteranopia (green-blind)

#000C3A

Tritanopia (blue-blind)

#001520

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #09043b;
/* rgb */ color: rgb(9, 4, 59);
/* oklch */ color: oklch(17.7% 0.099 274.6);

Tailwind

colors: {
  custom: {
    50: '#514772',
    500: '#09043b',
    950: '#000000',
  },
}

SCSS

$custom: #09043b;
$custom-light: #514772;
$custom-dark: #000000;

JSON

{
  "hex": "#09043b",
  "rgb": {
    "r": 9,
    "g": 4,
    "b": 59
  },
  "hsl": {
    "h": 245.455,
    "s": 87.302,
    "l": 12.353
  },
  "oklch": {
    "l": 0.17727,
    "c": 0.09911,
    "h": 274.6
  },
  "luminance": 0.00461
}

Semantic roles & 50–950 ramp

primary

#09043B

secondary

#747D1E

accent

#FD2AEA

background

#F4F4F6

surface

#E7E6EC

border

#C3C2C7

text

#030008

muted

#78777B

Preview Lab

Preview with #09043B

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

Preview Lab → · Contrast checker → · Palette generator →