#181A5C#181A5C

#181A5C is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.7% C 0.115 H 274.1°. Best body text is #FFFFFF at 15.66:1 contrast (WCAG AA passes).

Color values

HEX	#181A5C
RGB	rgb(24, 26, 92)
HSL	hsl(238, 59%, 23%)
HSV	hsv(238, 74%, 36%)
CMYK	cmyk(73.9%, 71.7%, 0%, 63.9%)
CIE-LAB	lab(13.86, 23.43, -39.68)
CIE-LCH	lch(13.86, 46.08, 300.56°)
OKLab	oklab(26.71% 0.0082 -0.1146)
OKLCH	oklch(26.71% 0.115 274.1)
XYZ	xyz(2.6772, 1.7054, 10.3112)
Luminance	0.0171 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A5C #5C5A18

analogous

#183C5C #181A5C #38185C

triadic

#181A5C #5C181A #1A5C18

tetradic

#181A5C #5C183C #5C5A18 #185C38

square

#181A5C #5C183C #5C5A18 #185C38

split-complementary

#181A5C #5C3818 #3C5C18

monochromatic

#060718 #0B0C2B #181A5C #25288D #3135BD

Accessibility & contrast

On white

15.66

#181A5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#181A5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A5C

15.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A5C	#FFFFFF	#000000	##FFFFFF
##181A5C	1.00	15.66	1.34	15.66
#FFFFFF	15.66	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00265E

Deuteranopia (green-blind)

#00205B

Tritanopia (blue-blind)

#002C38

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #181a5c;
/* rgb */ color: rgb(24, 26, 92);
/* oklch */ color: oklch(26.7% 0.115 274.1);

Tailwind

colors: {
  custom: {
    50: '#60568b',
    500: '#181a5c',
    950: '#000000',
  },
}

SCSS

$custom: #181a5c;
$custom-light: #60568b;
$custom-dark: #000000;

JSON

{
  "hex": "#181a5c",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 92
  },
  "hsl": {
    "h": 238.235,
    "s": 58.621,
    "l": 22.745
  },
  "oklch": {
    "l": 0.26706,
    "c": 0.11491,
    "h": 274.1
  },
  "luminance": 0.01706
}

Semantic roles & 50–950 ramp

primary

#181A5C

secondary

#93903D

accent

#DD46E2

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#05030C

muted

#7A787D

Preview Lab

Preview with #181A5C

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

Preview Lab → · Contrast checker → · Palette generator →