#18174D#18174D

#18174D is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.6% C 0.097 H 277.4°. Best body text is #FFFFFF at 16.55:1 contrast (WCAG AA passes).

Color values

HEX	#18174D
RGB	rgb(24, 23, 77)
HSL	hsl(241, 54%, 20%)
HSV	hsv(241, 70%, 30%)
CMYK	cmyk(68.8%, 70.1%, 0%, 69.8%)
CIE-LAB	lab(11.57, 19.71, -33.24)
CIE-LCH	lch(11.57, 38.64, 300.67°)
OKLab	oklab(24.58% 0.0124 -0.0957)
OKLCH	oklch(24.58% 0.097 277.4)
XYZ	xyz(2.0222, 1.3426, 7.1723)
Luminance	0.0134 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.73

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18174D #4C4D17

analogous

#17314D #18174D #33174D

triadic

#18174D #4D1817 #174D18

tetradic

#18174D #4D1731 #4C4D17 #174D33

square

#18174D #4D1731 #4C4D17 #174D33

split-complementary

#18174D #4D3317 #314D17

monochromatic

#070718 #09091E #18174D #27257C #3533AB

Accessibility & contrast

On white

16.55

#18174D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#18174D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18174D

16.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18174D	#FFFFFF	#000000	##FFFFFF
##18174D	1.00	16.55	1.27	16.55
#FFFFFF	16.55	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00214F

Deuteranopia (green-blind)

#001C4C

Tritanopia (blue-blind)

#00252F

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #18174d;
/* rgb */ color: rgb(24, 23, 77);
/* oklch */ color: oklch(24.6% 0.097 277.4);

Tailwind

colors: {
  custom: {
    50: '#5c547f',
    500: '#18174d',
    950: '#000000',
  },
}

SCSS

$custom: #18174d;
$custom-light: #5c547f;
$custom-dark: #000000;

JSON

{
  "hex": "#18174d",
  "rgb": {
    "r": 24,
    "g": 23,
    "b": 77
  },
  "hsl": {
    "h": 241.111,
    "s": 54,
    "l": 19.608
  },
  "oklch": {
    "l": 0.2458,
    "c": 0.09654,
    "h": 277.4
  },
  "luminance": 0.01343
}

Semantic roles & 50–950 ramp

primary

#18174D

secondary

#83843C

accent

#DD4ADB

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04020A

muted

#79787C

Preview Lab

Preview with #18174D

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

Preview Lab → · Contrast checker → · Palette generator →