#18273C#18273C

#18273C is a dark, muted blue. Relative luminance 0.020; OKLCH L 27.0% C 0.044 H 256.9°. Best body text is #FFFFFF at 15.06:1 contrast (WCAG AA passes).

Color values

HEX	#18273C
RGB	rgb(24, 39, 60)
HSL	hsl(215, 43%, 16%)
HSV	hsv(215, 60%, 24%)
CMYK	cmyk(60%, 35%, 0%, 76.5%)
CIE-LAB	lab(15.34, 1.05, -15.39)
CIE-LCH	lch(15.34, 15.43, 273.88°)
OKLab	oklab(27.03% -0.01 -0.0433)
OKLCH	oklch(27.03% 0.044 256.9)
XYZ	xyz(1.9175, 1.9713, 4.5535)
Luminance	0.0197 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18273C #3C2D18

analogous

#18393C #18273C #1B183C

triadic

#18273C #3C1827 #273C18

tetradic

#18273C #3C1839 #3C2D18 #183C1B

square

#18273C #3C1839 #3C2D18 #183C1B

split-complementary

#18273C #3C1B18 #393C18

monochromatic

#090E16 #090E16 #18273C #294368 #3B6093

Accessibility & contrast

On white

15.06

#18273C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#18273C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18273C

15.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18273C	#FFFFFF	#000000	##FFFFFF
##18273C	1.00	15.06	1.39	15.06
#FFFFFF	15.06	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F283D

Deuteranopia (green-blind)

#1A253C

Tritanopia (blue-blind)

#062C2E

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #18273c;
/* rgb */ color: rgb(24, 39, 60);
/* oklch */ color: oklch(27.0% 0.044 256.9);

Tailwind

colors: {
  custom: {
    50: '#586071',
    500: '#18273c',
    950: '#000000',
  },
}

SCSS

$custom: #18273c;
$custom-light: #586071;
$custom-dark: #000000;

JSON

{
  "hex": "#18273c",
  "rgb": {
    "r": 24,
    "g": 39,
    "b": 60
  },
  "hsl": {
    "h": 215,
    "s": 42.857,
    "l": 16.471
  },
  "oklch": {
    "l": 0.2703,
    "c": 0.04441,
    "h": 256.9
  },
  "luminance": 0.01971
}

Semantic roles & 50–950 ramp

primary

#18273C

secondary

#725C3E

accent

#9E55D3

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030507

muted

#78797A

Preview Lab

Preview with #18273C

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

Preview Lab → · Contrast checker → · Palette generator →