#181A55#181A55

#181A55 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.0% C 0.105 H 274.9°. Best body text is #FFFFFF at 15.94:1 contrast (WCAG AA passes).

Color values

HEX	#181A55
RGB	rgb(24, 26, 85)
HSL	hsl(238, 56%, 21%)
HSV	hsv(238, 72%, 33%)
CMYK	cmyk(71.8%, 69.4%, 0%, 66.7%)
CIE-LAB	lab(13.16, 20.69, -36.11)
CIE-LCH	lch(13.16, 41.62, 299.82°)
OKLab	oklab(25.98% 0.0089 -0.1041)
OKLCH	oklch(25.98% 0.105 274.9)
XYZ	xyz(2.3852, 1.5886, 8.7735)
Luminance	0.0159 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A55 #555318

analogous

#183955 #181A55 #351855

triadic

#181A55 #55181A #1A5518

tetradic

#181A55 #551839 #555318 #185535

square

#181A55 #551839 #555318 #185535

split-complementary

#181A55 #553518 #395518

monochromatic

#070718 #0B0B25 #181A55 #252985 #3337B4

Accessibility & contrast

On white

15.94

#181A55 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#181A55 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A55

15.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A55	#FFFFFF	#000000	##FFFFFF
##181A55	1.00	15.94	1.32	15.94
#FFFFFF	15.94	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002557

Deuteranopia (green-blind)

#001F54

Tritanopia (blue-blind)

#002934

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #181a55;
/* rgb */ color: rgb(24, 26, 85);
/* oklch */ color: oklch(26.0% 0.105 274.9);

Tailwind

colors: {
  custom: {
    50: '#5e5685',
    500: '#181a55',
    950: '#000000',
  },
}

SCSS

$custom: #181a55;
$custom-light: #5e5685;
$custom-dark: #000000;

JSON

{
  "hex": "#181a55",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 85
  },
  "hsl": {
    "h": 238.033,
    "s": 55.963,
    "l": 21.373
  },
  "oklch": {
    "l": 0.25983,
    "c": 0.10452,
    "h": 274.9
  },
  "luminance": 0.01589
}

Semantic roles & 50–950 ramp

primary

#181A55

secondary

#8C893D

accent

#DA49DF

background

#F5F5F8

surface

#EAE9EF

border

#C6C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #181A55

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

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