#180D53#180D53

#180D53 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.5% C 0.118 H 279.5°. Best body text is #FFFFFF at 17.19:1 contrast (WCAG AA passes).

Color values

HEX	#180D53
RGB	rgb(24, 13, 83)
HSL	hsl(249, 73%, 19%)
HSV	hsv(249, 84%, 33%)
CMYK	cmyk(71.1%, 84.3%, 0%, 67.5%)
CIE-LAB	lab(9.85, 28.47, -40.19)
CIE-LCH	lch(9.85, 49.25, 305.32°)
OKLab	oklab(23.55% 0.0194 -0.116)
OKLCH	oklch(23.55% 0.118 279.5)
XYZ	xyz(2.0814, 1.1064, 8.2858)
Luminance	0.0111 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180D53 #48530D

analogous

#0D2553 #180D53 #3B0D53

triadic

#180D53 #53180D #0D5318

tetradic

#180D53 #530D25 #48530D #0D533B

square

#180D53 #530D25 #48530D #0D533B

split-complementary

#180D53 #533B0D #25530D

monochromatic

#08041A #09051E #180D53 #271588 #371EBD

Accessibility & contrast

On white

17.19

#180D53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#180D53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180D53

17.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180D53	#FFFFFF	#000000	##FFFFFF
##180D53	1.00	17.19	1.22	17.19
#FFFFFF	17.19	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E55

Deuteranopia (green-blind)

#001852

Tritanopia (blue-blind)

#002230

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #180d53;
/* rgb */ color: rgb(24, 13, 83);
/* oklch */ color: oklch(23.5% 0.118 279.5);

Tailwind

colors: {
  custom: {
    50: '#5f4d84',
    500: '#180d53',
    950: '#000000',
  },
}

SCSS

$custom: #180d53;
$custom-light: #5f4d84;
$custom-dark: #000000;

JSON

{
  "hex": "#180d53",
  "rgb": {
    "r": 24,
    "g": 13,
    "b": 83
  },
  "hsl": {
    "h": 249.429,
    "s": 72.917,
    "l": 18.824
  },
  "oklch": {
    "l": 0.23545,
    "c": 0.11764,
    "h": 279.5
  },
  "luminance": 0.01107
}

Semantic roles & 50–950 ramp

primary

#180D53

secondary

#7F8E2E

accent

#F038D3

background

#F5F4F8

surface

#EAE7EF

border

#C6C3CA

text

#05010B

muted

#79777C

Preview Lab

Preview with #180D53

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

Preview Lab → · Contrast checker → · Palette generator →