#18174B#18174B

#18174B is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.4% C 0.093 H 277.8°. Best body text is #FFFFFF at 16.63:1 contrast (WCAG AA passes).

Color values

HEX	#18174B
RGB	rgb(24, 23, 75)
HSL	hsl(241, 53%, 19%)
HSV	hsv(241, 69%, 29%)
CMYK	cmyk(68%, 69.3%, 0%, 70.6%)
CIE-LAB	lab(11.38, 18.93, -32.17)
CIE-LCH	lch(11.38, 37.33, 300.48°)
OKLab	oklab(24.38% 0.0126 -0.0926)
OKLCH	oklch(24.38% 0.093 277.8)
XYZ	xyz(1.9527, 1.3148, 6.8061)
Luminance	0.0132 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18174B #4A4B17

analogous

#17304B #18174B #32174B

triadic

#18174B #4B1817 #174B18

tetradic

#18174B #4B1730 #4A4B17 #174B32

square

#18174B #4B1730 #4A4B17 #174B32

split-complementary

#18174B #4B3217 #304B17

monochromatic

#070717 #09091C #18174B #27257A #3634A9

Accessibility & contrast

On white

16.63

#18174B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#18174B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18174B

16.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18174B	#FFFFFF	#000000	##FFFFFF
##18174B	1.00	16.63	1.26	16.63
#FFFFFF	16.63	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00204D

Deuteranopia (green-blind)

#001C4A

Tritanopia (blue-blind)

#00242E

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #18174b;
/* rgb */ color: rgb(24, 23, 75);
/* oklch */ color: oklch(24.4% 0.093 277.8);

Tailwind

colors: {
  custom: {
    50: '#5c547e',
    500: '#18174b',
    950: '#000000',
  },
}

SCSS

$custom: #18174b;
$custom-light: #5c547e;
$custom-dark: #000000;

JSON

{
  "hex": "#18174b",
  "rgb": {
    "r": 24,
    "g": 23,
    "b": 75
  },
  "hsl": {
    "h": 241.154,
    "s": 53.061,
    "l": 19.216
  },
  "oklch": {
    "l": 0.2438,
    "c": 0.09346,
    "h": 277.8
  },
  "luminance": 0.01315
}

Semantic roles & 50–950 ramp

primary

#18174B

secondary

#81823C

accent

#DC4BDA

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04020A

muted

#79787C

Preview Lab

Preview with #18174B

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

Preview Lab → · Contrast checker → · Palette generator →