#180F54#180F54

#180F54 is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 24.0% C 0.117 H 278.8°. Best body text is #FFFFFF at 17.00:1 contrast (WCAG AA passes).

Color values

HEX	#180F54
RGB	rgb(24, 15, 84)
HSL	hsl(248, 70%, 19%)
HSV	hsv(248, 82%, 33%)
CMYK	cmyk(71.4%, 82.1%, 0%, 67.1%)
CIE-LAB	lab(10.38, 27.65, -40.00)
CIE-LCH	lch(10.38, 48.62, 304.65°)
OKLab	oklab(23.95% 0.0178 -0.1155)
OKLCH	oklch(23.95% 0.117 278.8)
XYZ	xyz(2.1472, 1.1758, 8.4996)
Luminance	0.0118 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180F54 #4B540F

analogous

#0F2954 #180F54 #3B0F54

triadic

#180F54 #54180F #0F5418

tetradic

#180F54 #540F29 #4B540F #0F543B

square

#180F54 #540F29 #4B540F #0F543B

split-complementary

#180F54 #543B0F #29540F

monochromatic

#07051A #090620 #180F54 #271888 #3622BC

Accessibility & contrast

On white

17.00

#180F54 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#180F54 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180F54

17.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180F54	#FFFFFF	#000000	##FFFFFF
##180F54	1.00	17.00	1.24	17.00
#FFFFFF	17.00	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	17.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001F56

Deuteranopia (green-blind)

#001953

Tritanopia (blue-blind)

#002331

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #180f54;
/* rgb */ color: rgb(24, 15, 84);
/* oklch */ color: oklch(24.0% 0.117 278.8);

Tailwind

colors: {
  custom: {
    50: '#5f4f85',
    500: '#180f54',
    950: '#000000',
  },
}

SCSS

$custom: #180f54;
$custom-light: #5f4f85;
$custom-dark: #000000;

JSON

{
  "hex": "#180f54",
  "rgb": {
    "r": 24,
    "g": 15,
    "b": 84
  },
  "hsl": {
    "h": 247.826,
    "s": 69.697,
    "l": 19.412
  },
  "oklch": {
    "l": 0.23952,
    "c": 0.11686,
    "h": 278.8
  },
  "luminance": 0.01176
}

Semantic roles & 50–950 ramp

primary

#180F54

secondary

#828E31

accent

#ED3BD5

background

#F5F4F8

surface

#EAE7EF

border

#C6C3CA

text

#05020B

muted

#79787C

Preview Lab

Preview with #180F54

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

Preview Lab → · Contrast checker → · Palette generator →