#181C8E#181C8E

#181C8E is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.7% C 0.179 H 269.6°. Best body text is #FFFFFF at 13.16:1 contrast (WCAG AA passes).

Color values

HEX	#181C8E
RGB	rgb(24, 28, 142)
HSL	hsl(238, 71%, 33%)
HSV	hsv(238, 83%, 56%)
CMYK	cmyk(83.1%, 80.3%, 0%, 44.3%)
CIE-LAB	lab(19.95, 40.44, -61.87)
CIE-LCH	lch(19.95, 73.91, 303.17°)
OKLab	oklab(32.72% -0.0012 -0.1792)
OKLCH	oklch(32.72% 0.179 269.6)
XYZ	xyz(5.6728, 2.9770, 25.8616)
Luminance	0.0298 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C8E #8E8A18

analogous

#18578E #181C8E #4F188E

triadic

#181C8E #8E181C #1C8E18

tetradic

#181C8E #8E1857 #8E8A18 #188E4F

square

#181C8E #8E1857 #8E8A18 #188E4F

split-complementary

#181C8E #8E4F18 #578E18

monochromatic

#060725 #0F125A #181C8E #2126C2 #4147DF

Accessibility & contrast

On white

13.16

#181C8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#181C8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C8E

13.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C8E	#FFFFFF	#000000	##FFFFFF
##181C8E	1.00	13.16	1.60	13.16
#FFFFFF	13.16	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003691

Deuteranopia (green-blind)

#002A8C

Tritanopia (blue-blind)

#003F55

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #181c8e;
/* rgb */ color: rgb(24, 28, 142);
/* oklch */ color: oklch(32.7% 0.179 269.6);

Tailwind

colors: {
  custom: {
    50: '#6e5ab0',
    500: '#181c8e',
    950: '#000000',
  },
}

SCSS

$custom: #181c8e;
$custom-light: #6e5ab0;
$custom-dark: #000000;

JSON

{
  "hex": "#181c8e",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 142
  },
  "hsl": {
    "h": 237.966,
    "s": 71.084,
    "l": 32.549
  },
  "oklch": {
    "l": 0.32723,
    "c": 0.17922,
    "h": 269.6
  },
  "luminance": 0.02978
}

Semantic roles & 50–950 ramp

primary

#181C8E

secondary

#C0BB42

accent

#E83AEE

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #181C8E

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

Preview Lab → · Contrast checker → · Palette generator →