#18184C#18184C

#18184C is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.7% C 0.094 H 277.1°. Best body text is #FFFFFF at 16.49:1 contrast (WCAG AA passes).

Color values

HEX	#18184C
RGB	rgb(24, 24, 76)
HSL	hsl(240, 52%, 20%)
HSV	hsv(240, 68%, 30%)
CMYK	cmyk(68.4%, 68.4%, 0%, 70.2%)
CIE-LAB	lab(11.75, 18.59, -32.25)
CIE-LCH	lch(11.75, 37.23, 299.96°)
OKLab	oklab(24.68% 0.0115 -0.0928)
OKLCH	oklch(24.68% 0.094 277.1)
XYZ	xyz(2.0074, 1.3691, 6.9946)
Luminance	0.0137 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18184C #4C4C18

analogous

#18324C #18184C #32184C

triadic

#18184C #4C1818 #184C18

tetradic

#18184C #4C1832 #4C4C18 #184C32

square

#18184C #4C1832 #4C4C18 #184C32

split-complementary

#18184C #4C3218 #324C18

monochromatic

#070717 #09091D #18184C #27277B #3535A9

Accessibility & contrast

On white

16.49

#18184C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#18184C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18184C

16.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18184C	#FFFFFF	#000000	##FFFFFF
##18184C	1.00	16.49	1.27	16.49
#FFFFFF	16.49	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00214E

Deuteranopia (green-blind)

#001D4B

Tritanopia (blue-blind)

#00252F

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #18184c;
/* rgb */ color: rgb(24, 24, 76);
/* oklch */ color: oklch(24.7% 0.094 277.1);

Tailwind

colors: {
  custom: {
    50: '#5c557f',
    500: '#18184c',
    950: '#000000',
  },
}

SCSS

$custom: #18184c;
$custom-light: #5c557f;
$custom-dark: #000000;

JSON

{
  "hex": "#18184c",
  "rgb": {
    "r": 24,
    "g": 24,
    "b": 76
  },
  "hsl": {
    "h": 240,
    "s": 52,
    "l": 19.608
  },
  "oklch": {
    "l": 0.24682,
    "c": 0.09356,
    "h": 277.1
  },
  "luminance": 0.01369
}

Semantic roles & 50–950 ramp

primary

#18184C

secondary

#83833D

accent

#DB4CDB

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #18184C

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

Preview Lab → · Contrast checker → · Palette generator →