#181DA1#181DA1

#181DA1 is a dark, highly saturated blue. Relative luminance 0.036; OKLCH L 35.1% C 0.201 H 268.6°. Best body text is #FFFFFF at 12.14:1 contrast (WCAG AA passes).

Color values

HEX	#181DA1
RGB	rgb(24, 29, 161)
HSL	hsl(238, 74%, 36%)
HSV	hsv(238, 85%, 63%)
CMYK	cmyk(85.1%, 82%, 0%, 36.9%)
CIE-LAB	lab(22.46, 46.23, -69.42)
CIE-LCH	lch(22.46, 83.40, 303.67°)
OKLab	oklab(35.15% -0.005 -0.2011)
OKLCH	oklch(35.15% 0.201 268.6)
XYZ	xyz(7.2469, 3.6452, 34.0330)
Luminance	0.0365 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181DA1 #A19C18

analogous

#1862A1 #181DA1 #5818A1

triadic

#181DA1 #A1181D #1DA118

tetradic

#181DA1 #A11862 #A19C18 #18A158

square

#181DA1 #A11862 #A19C18 #18A158

split-complementary

#181DA1 #A15818 #62A118

monochromatic

#080A36 #10136C #181DA1 #2027D6 #4F54E5

Accessibility & contrast

On white

12.14

#181DA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#181DA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181DA1

12.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181DA1	#FFFFFF	#000000	##FFFFFF
##181DA1	1.00	12.14	1.73	12.14
#FFFFFF	12.14	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003DA5

Deuteranopia (green-blind)

#002E9F

Tritanopia (blue-blind)

#004760

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #181da1;
/* rgb */ color: rgb(24, 29, 161);
/* oklch */ color: oklch(35.1% 0.201 268.6);

Tailwind

colors: {
  custom: {
    50: '#735cbe',
    500: '#181da1',
    950: '#000000',
  },
}

SCSS

$custom: #181da1;
$custom-light: #735cbe;
$custom-dark: #000000;

JSON

{
  "hex": "#181da1",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 161
  },
  "hsl": {
    "h": 237.81,
    "s": 74.054,
    "l": 36.275
  },
  "oklch": {
    "l": 0.3515,
    "c": 0.20112,
    "h": 268.6
  },
  "luminance": 0.03646
}

Semantic roles & 50–950 ramp

primary

#181DA1

secondary

#C7C24E

accent

#EA37F1

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #181DA1

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

Preview Lab → · Contrast checker → · Palette generator →