#18273B#18273B

#18273B is a dark, muted cyan. Relative luminance 0.020; OKLCH L 27.0% C 0.043 H 255.9°. Best body text is #FFFFFF at 15.08:1 contrast (WCAG AA passes).

Color values

HEX	#18273B
RGB	rgb(24, 39, 59)
HSL	hsl(214, 42%, 16%)
HSV	hsv(214, 59%, 23%)
CMYK	cmyk(59.3%, 33.9%, 0%, 76.9%)
CIE-LAB	lab(15.28, 0.66, -14.78)
CIE-LCH	lch(15.28, 14.80, 272.57°)
OKLab	oklab(26.97% -0.0104 -0.0415)
OKLCH	oklch(26.97% 0.043 255.9)
XYZ	xyz(1.8914, 1.9609, 4.4156)
Luminance	0.0196 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18273B #3B2C18

analogous

#18393B #18273B #1B183B

triadic

#18273B #3B1827 #273B18

tetradic

#18273B #3B1839 #3B2C18 #183B1B

square

#18273B #3B1839 #3B2C18 #183B1B

split-complementary

#18273B #3B1B18 #393B18

monochromatic

#090E16 #090E16 #18273B #2A4467 #3B6192

Accessibility & contrast

On white

15.08

#18273B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#18273B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18273B

15.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18273B	#FFFFFF	#000000	##FFFFFF
##18273B	1.00	15.08	1.39	15.08
#FFFFFF	15.08	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F283C

Deuteranopia (green-blind)

#1B253B

Tritanopia (blue-blind)

#072B2E

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #18273b;
/* rgb */ color: rgb(24, 39, 59);
/* oklch */ color: oklch(27.0% 0.043 255.9);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#18273b",
  "rgb": {
    "r": 24,
    "g": 39,
    "b": 59
  },
  "hsl": {
    "h": 214.286,
    "s": 42.169,
    "l": 16.275
  },
  "oklch": {
    "l": 0.26968,
    "c": 0.04277,
    "h": 255.9
  },
  "luminance": 0.01961
}

Semantic roles & 50–950 ramp

primary

#18273B

secondary

#715B3E

accent

#9D56D2

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030507

muted

#78797A

Preview Lab

Preview with #18273B

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

Preview Lab → · Contrast checker → · Palette generator →