#180F4C#180F4C

#180F4C is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.0% C 0.106 H 280.8°. Best body text is #FFFFFF at 17.33:1 contrast (WCAG AA passes).

Color values

HEX	#180F4C
RGB	rgb(24, 15, 76)
HSL	hsl(249, 67%, 18%)
HSV	hsv(249, 80%, 30%)
CMYK	cmyk(68.4%, 80.3%, 0%, 70.2%)
CIE-LAB	lab(9.46, 24.79, -36.00)
CIE-LCH	lch(9.46, 43.71, 304.55°)
OKLab	oklab(23.03% 0.0199 -0.1038)
OKLCH	oklch(23.03% 0.106 280.8)
XYZ	xyz(1.8516, 1.0575, 6.9426)
Luminance	0.0106 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180F4C #434C0F

analogous

#0F254C #180F4C #360F4C

triadic

#180F4C #4C180F #0F4C18

tetradic

#180F4C #4C0F25 #434C0F #0F4C36

square

#180F4C #4C0F25 #434C0F #0F4C36

split-complementary

#180F4C #4C360F #254C0F

monochromatic

#08051A #08051A #180F4C #28197F #3823B2

Accessibility & contrast

On white

17.33

#180F4C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#180F4C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180F4C

17.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180F4C	#FFFFFF	#000000	##FFFFFF
##180F4C	1.00	17.33	1.21	17.33
#FFFFFF	17.33	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D4E

Deuteranopia (green-blind)

#00184B

Tritanopia (blue-blind)

#00202C

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #180f4c;
/* rgb */ color: rgb(24, 15, 76);
/* oklch */ color: oklch(23.0% 0.106 280.8);

Tailwind

colors: {
  custom: {
    50: '#5d4e7f',
    500: '#180f4c',
    950: '#000000',
  },
}

SCSS

$custom: #180f4c;
$custom-light: #5d4e7f;
$custom-dark: #000000;

JSON

{
  "hex": "#180f4c",
  "rgb": {
    "r": 24,
    "g": 15,
    "b": 76
  },
  "hsl": {
    "h": 248.852,
    "s": 67.033,
    "l": 17.843
  },
  "oklch": {
    "l": 0.23029,
    "c": 0.10573,
    "h": 280.8
  },
  "luminance": 0.01058
}

Semantic roles & 50–950 ramp

primary

#180F4C

secondary

#7A8631

accent

#EA3ED1

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#05010A

muted

#79777C

Preview Lab

Preview with #180F4C

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

Preview Lab → · Contrast checker → · Palette generator →