#181D4C#181D4C

#181D4C is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.8% C 0.086 H 274.1°. Best body text is #FFFFFF at 15.92:1 contrast (WCAG AA passes).

Color values

HEX	#181D4C
RGB	rgb(24, 29, 76)
HSL	hsl(234, 52%, 20%)
HSV	hsv(234, 68%, 30%)
CMYK	cmyk(68.4%, 61.8%, 0%, 70.2%)
CIE-LAB	lab(13.20, 14.90, -29.90)
CIE-LCH	lch(13.20, 33.41, 296.49°)
OKLab	oklab(25.75% 0.0061 -0.0859)
OKLCH	oklch(25.75% 0.086 274.1)
XYZ	xyz(2.1201, 1.5945, 7.0321)
Luminance	0.0159 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.67

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D4C #4C4718

analogous

#18374C #181D4C #2D184C

triadic

#181D4C #4C181D #1D4C18

tetradic

#181D4C #4C1837 #4C4718 #184C2D

square

#181D4C #4C1837 #4C4718 #184C2D

split-complementary

#181D4C #4C2D18 #374C18

monochromatic

#070917 #090B1D #181D4C #272F7B #3540A9

Accessibility & contrast

On white

15.92

#181D4C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#181D4C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D4C

15.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D4C	#FFFFFF	#000000	##FFFFFF
##181D4C	1.00	15.92	1.32	15.92
#FFFFFF	15.92	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00244E

Deuteranopia (green-blind)

#00204B

Tritanopia (blue-blind)

#002831

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #181d4c;
/* rgb */ color: rgb(24, 29, 76);
/* oklch */ color: oklch(25.8% 0.086 274.1);

Tailwind

colors: {
  custom: {
    50: '#5c587e',
    500: '#181d4c',
    950: '#000000',
  },
}

SCSS

$custom: #181d4c;
$custom-light: #5c587e;
$custom-dark: #000000;

JSON

{
  "hex": "#181d4c",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 76
  },
  "hsl": {
    "h": 234.231,
    "s": 52,
    "l": 19.608
  },
  "oklch": {
    "l": 0.25753,
    "c": 0.08611,
    "h": 274.1
  },
  "luminance": 0.01595
}

Semantic roles & 50–950 ramp

primary

#181D4C

secondary

#837C3D

accent

#CE4CDB

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #181D4C

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

Preview Lab → · Contrast checker → · Palette generator →