#18193C#18193C

#18193C is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.4% C 0.066 H 278.8°. Best body text is #FFFFFF at 16.89:1 contrast (WCAG AA passes).

Color values

HEX	#18193C
RGB	rgb(24, 25, 60)
HSL	hsl(238, 43%, 16%)
HSV	hsv(238, 60%, 24%)
CMYK	cmyk(60%, 58.3%, 0%, 76.5%)
CIE-LAB	lab(10.67, 11.55, -22.79)
CIE-LCH	lch(10.67, 25.55, 296.87°)
OKLab	oklab(23.45% 0.0101 -0.065)
OKLCH	oklch(23.45% 0.066 278.8)
XYZ	xyz(1.5397, 1.2156, 4.4276)
Luminance	0.0122 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18193C #3C3B18

analogous

#182B3C #18193C #29183C

triadic

#18193C #3C1819 #193C18

tetradic

#18193C #3C182B #3C3B18 #183C29

square

#18193C #3C182B #3C3B18 #183C29

split-complementary

#18193C #3C2918 #2B3C18

monochromatic

#090916 #090916 #18193C #292B68 #3B3D93

Accessibility & contrast

On white

16.89

#18193C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#18193C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18193C

16.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18193C	#FFFFFF	#000000	##FFFFFF
##18193C	1.00	16.89	1.24	16.89
#FFFFFF	16.89	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#081E3D

Deuteranopia (green-blind)

#051B3B

Tritanopia (blue-blind)

#092127

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #18193c;
/* rgb */ color: rgb(24, 25, 60);
/* oklch */ color: oklch(23.4% 0.066 278.8);

Tailwind

colors: {
  custom: {
    50: '#585572',
    500: '#18193c',
    950: '#000000',
  },
}

SCSS

$custom: #18193c;
$custom-light: #585572;
$custom-dark: #000000;

JSON

{
  "hex": "#18193c",
  "rgb": {
    "r": 24,
    "g": 25,
    "b": 60
  },
  "hsl": {
    "h": 238.333,
    "s": 42.857,
    "l": 16.471
  },
  "oklch": {
    "l": 0.23447,
    "c": 0.06578,
    "h": 278.8
  },
  "luminance": 0.01216
}

Semantic roles & 50–950 ramp

primary

#18193C

secondary

#72713E

accent

#CF55D3

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030308

muted

#78787B

Preview Lab

Preview with #18193C

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

Preview Lab → · Contrast checker → · Palette generator →