#181D5F#181D5F

#181D5F is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.6% C 0.115 H 272.8°. Best body text is #FFFFFF at 15.22:1 contrast (WCAG AA passes).

Color values

HEX	#181D5F
RGB	rgb(24, 29, 95)
HSL	hsl(236, 60%, 23%)
HSV	hsv(236, 75%, 37%)
CMYK	cmyk(74.7%, 69.5%, 0%, 62.7%)
CIE-LAB	lab(14.95, 22.50, -39.90)
CIE-LCH	lch(14.95, 45.81, 299.42°)
OKLab	oklab(27.59% 0.0056 -0.1152)
OKLCH	oklch(27.59% 0.115 272.8)
XYZ	xyz(2.8809, 1.8989, 11.0389)
Luminance	0.0190 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D5F #5F5A18

analogous

#18405F #181D5F #36185F

triadic

#181D5F #5F181D #1D5F18

tetradic

#181D5F #5F1840 #5F5A18 #185F36

square

#181D5F #5F1840 #5F5A18 #185F36

split-complementary

#181D5F #5F3618 #405F18

monochromatic

#060718 #0C0E2E #181D5F #242C90 #313BC1

Accessibility & contrast

On white

15.22

#181D5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#181D5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D5F

15.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D5F	#FFFFFF	#000000	##FFFFFF
##181D5F	1.00	15.22	1.38	15.22
#FFFFFF	15.22	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002961

Deuteranopia (green-blind)

#00225E

Tritanopia (blue-blind)

#002E3B

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #181d5f;
/* rgb */ color: rgb(24, 29, 95);
/* oklch */ color: oklch(27.6% 0.115 272.8);

Tailwind

colors: {
  custom: {
    50: '#60598d',
    500: '#181d5f',
    950: '#000000',
  },
}

SCSS

$custom: #181d5f;
$custom-light: #60598d;
$custom-dark: #000000;

JSON

{
  "hex": "#181d5f",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 95
  },
  "hsl": {
    "h": 235.775,
    "s": 59.664,
    "l": 23.333
  },
  "oklch": {
    "l": 0.27591,
    "c": 0.11537,
    "h": 272.8
  },
  "luminance": 0.01899
}

Semantic roles & 50–950 ramp

primary

#181D5F

secondary

#958F3D

accent

#D845E3

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#05030C

muted

#7A787D

Preview Lab

Preview with #181D5F

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

Preview Lab → · Contrast checker → · Palette generator →