#18184B#18184B

#18184B is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.6% C 0.092 H 277.2°. Best body text is #FFFFFF at 16.52:1 contrast (WCAG AA passes).

Color values

HEX	#18184B
RGB	rgb(24, 24, 75)
HSL	hsl(240, 52%, 19%)
HSV	hsv(240, 68%, 29%)
CMYK	cmyk(68%, 68%, 0%, 70.6%)
CIE-LAB	lab(11.66, 18.20, -31.72)
CIE-LCH	lch(11.66, 36.57, 299.85°)
OKLab	oklab(24.58% 0.0116 -0.0913)
OKLCH	oklch(24.58% 0.092 277.2)
XYZ	xyz(1.9729, 1.3553, 6.8129)
Luminance	0.0135 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18184B #4B4B18

analogous

#18324B #18184B #32184B

triadic

#18184B #4B1818 #184B18

tetradic

#18184B #4B1832 #4B4B18 #184B32

square

#18184B #4B1832 #4B4B18 #184B32

split-complementary

#18184B #4B3218 #324B18

monochromatic

#070717 #09091D #18184B #272779 #3636A8

Accessibility & contrast

On white

16.52

#18184B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#18184B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18184B

16.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18184B	#FFFFFF	#000000	##FFFFFF
##18184B	1.00	16.52	1.27	16.52
#FFFFFF	16.52	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00214D

Deuteranopia (green-blind)

#001D4A

Tritanopia (blue-blind)

#00252E

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #18184b;
/* rgb */ color: rgb(24, 24, 75);
/* oklch */ color: oklch(24.6% 0.092 277.2);

Tailwind

colors: {
  custom: {
    50: '#5c547e',
    500: '#18184b',
    950: '#000000',
  },
}

SCSS

$custom: #18184b;
$custom-light: #5c547e;
$custom-dark: #000000;

JSON

{
  "hex": "#18184b",
  "rgb": {
    "r": 24,
    "g": 24,
    "b": 75
  },
  "hsl": {
    "h": 240,
    "s": 51.515,
    "l": 19.412
  },
  "oklch": {
    "l": 0.24584,
    "c": 0.092,
    "h": 277.2
  },
  "luminance": 0.01355
}

Semantic roles & 50–950 ramp

primary

#18184B

secondary

#82823D

accent

#DB4DDB

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #18184B

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

Preview Lab → · Contrast checker → · Palette generator →