#180D5A#180D5A

#180D5A is a very dark, vivid blue. Relative luminance 0.012; OKLCH L 24.4% C 0.127 H 277.8°. Best body text is #FFFFFF at 16.88:1 contrast (WCAG AA passes).

Color values

HEX	#180D5A
RGB	rgb(24, 13, 90)
HSL	hsl(249, 75%, 20%)
HSV	hsv(249, 86%, 35%)
CMYK	cmyk(73.3%, 85.6%, 0%, 64.7%)
CIE-LAB	lab(10.70, 30.88, -43.53)
CIE-LCH	lch(10.70, 53.37, 305.35°)
OKLab	oklab(24.4% 0.0172 -0.1258)
OKLCH	oklch(24.4% 0.127 277.8)
XYZ	xyz(2.3655, 1.2200, 9.7817)
Luminance	0.0122 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180D5A #4F5A0D

analogous

#0D295A #180D5A #3E0D5A

triadic

#180D5A #5A180D #0D5A18

tetradic

#180D5A #5A0D29 #4F5A0D #0D5A3E

square

#180D5A #5A0D29 #4F5A0D #0D5A3E

split-complementary

#180D5A #5A3E0D #295A0D

monochromatic

#07041B #0A0525 #180D5A #26158F #351CC5

Accessibility & contrast

On white

16.88

#180D5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#180D5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180D5A

16.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180D5A	#FFFFFF	#000000	##FFFFFF
##180D5A	1.00	16.88	1.24	16.88
#FFFFFF	16.88	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00205C

Deuteranopia (green-blind)

#001A59

Tritanopia (blue-blind)

#002534

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #180d5a;
/* rgb */ color: rgb(24, 13, 90);
/* oklch */ color: oklch(24.4% 0.127 277.8);

Tailwind

colors: {
  custom: {
    50: '#614e8a',
    500: '#180d5a',
    950: '#000000',
  },
}

SCSS

$custom: #180d5a;
$custom-light: #614e8a;
$custom-dark: #000000;

JSON

{
  "hex": "#180d5a",
  "rgb": {
    "r": 24,
    "g": 13,
    "b": 90
  },
  "hsl": {
    "h": 248.571,
    "s": 74.757,
    "l": 20.196
  },
  "oklch": {
    "l": 0.24395,
    "c": 0.12694,
    "h": 277.8
  },
  "luminance": 0.0122
}

Semantic roles & 50–950 ramp

primary

#180D5A

secondary

#86942E

accent

#F136D7

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #180D5A

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

Preview Lab → · Contrast checker → · Palette generator →