#18173E#18173E

#18173E is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.2% C 0.073 H 280.3°. Best body text is #FFFFFF at 17.06:1 contrast (WCAG AA passes).

Color values

HEX	#18173E
RGB	rgb(24, 23, 62)
HSL	hsl(242, 46%, 17%)
HSV	hsv(242, 63%, 24%)
CMYK	cmyk(61.3%, 62.9%, 0%, 75.7%)
CIE-LAB	lab(10.22, 13.84, -24.94)
CIE-LCH	lch(10.22, 28.53, 299.04°)
OKLab	oklab(23.16% 0.0129 -0.0713)
OKLCH	oklch(23.16% 0.073 280.3)
XYZ	xyz(1.5523, 1.1547, 4.6976)
Luminance	0.0115 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18173E #3D3E17

analogous

#172A3E #18173E #2C173E

triadic

#18173E #3E1817 #173E18

tetradic

#18173E #3E172A #3D3E17 #173E2C

square

#18173E #3E172A #3D3E17 #173E2C

split-complementary

#18173E #3E2C17 #2A3E17

monochromatic

#090816 #090816 #18173E #29286B #3B3897

Accessibility & contrast

On white

17.06

#18173E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#18173E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18173E

17.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18173E	#FFFFFF	#000000	##FFFFFF
##18173E	1.00	17.06	1.23	17.06
#FFFFFF	17.06	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#021D3F

Deuteranopia (green-blind)

#001A3D

Tritanopia (blue-blind)

#072027

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #18173e;
/* rgb */ color: rgb(24, 23, 62);
/* oklch */ color: oklch(23.2% 0.073 280.3);

Tailwind

colors: {
  custom: {
    50: '#595373',
    500: '#18173e',
    950: '#000000',
  },
}

SCSS

$custom: #18173e;
$custom-light: #595373;
$custom-dark: #000000;

JSON

{
  "hex": "#18173e",
  "rgb": {
    "r": 24,
    "g": 23,
    "b": 62
  },
  "hsl": {
    "h": 241.538,
    "s": 45.882,
    "l": 16.667
  },
  "oklch": {
    "l": 0.23159,
    "c": 0.07251,
    "h": 280.3
  },
  "luminance": 0.01155
}

Semantic roles & 50–950 ramp

primary

#18173E

secondary

#73753C

accent

#D652D2

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#040208

muted

#79787B

Preview Lab

Preview with #18173E

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

Preview Lab → · Contrast checker → · Palette generator →