#180F56#180F56

#180F56 is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 24.2% C 0.120 H 278.3°. Best body text is #FFFFFF at 16.91:1 contrast (WCAG AA passes).

Color values

HEX	#180F56
RGB	rgb(24, 15, 86)
HSL	hsl(248, 70%, 20%)
HSV	hsv(248, 83%, 34%)
CMYK	cmyk(72.1%, 82.6%, 0%, 66.3%)
CIE-LAB	lab(10.61, 28.36, -40.97)
CIE-LCH	lch(10.61, 49.83, 304.69°)
OKLab	oklab(24.19% 0.0172 -0.1183)
OKLCH	oklch(24.19% 0.12 278.3)
XYZ	xyz(2.2267, 1.2075, 8.9180)
Luminance	0.0121 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180F56 #4D560F

analogous

#0F2956 #180F56 #3C0F56

triadic

#180F56 #56180F #0F5618

tetradic

#180F56 #560F29 #4D560F #0F563C

square

#180F56 #560F29 #4D560F #0F563C

split-complementary

#180F56 #563C0F #29560F

monochromatic

#07051A #090622 #180F56 #27188A #3521BE

Accessibility & contrast

On white

16.91

#180F56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#180F56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180F56

16.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180F56	#FFFFFF	#000000	##FFFFFF
##180F56	1.00	16.91	1.24	16.91
#FFFFFF	16.91	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001F58

Deuteranopia (green-blind)

#001A55

Tritanopia (blue-blind)

#002432

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #180f56;
/* rgb */ color: rgb(24, 15, 86);
/* oklch */ color: oklch(24.2% 0.120 278.3);

Tailwind

colors: {
  custom: {
    50: '#604f86',
    500: '#180f56',
    950: '#000000',
  },
}

SCSS

$custom: #180f56;
$custom-light: #604f86;
$custom-dark: #000000;

JSON

{
  "hex": "#180f56",
  "rgb": {
    "r": 24,
    "g": 15,
    "b": 86
  },
  "hsl": {
    "h": 247.606,
    "s": 70.297,
    "l": 19.804
  },
  "oklch": {
    "l": 0.24187,
    "c": 0.11959,
    "h": 278.3
  },
  "luminance": 0.01208
}

Semantic roles & 50–950 ramp

primary

#180F56

secondary

#849031

accent

#ED3BD6

background

#F6F4F8

surface

#EBE7EF

border

#C6C3CA

text

#05020B

muted

#7A787C

Preview Lab

Preview with #180F56

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

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