#181C8F#181C8F

#181C8F is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.8% C 0.180 H 269.6°. Best body text is #FFFFFF at 13.11:1 contrast (WCAG AA passes).

Color values

HEX	#181C8F
RGB	rgb(24, 28, 143)
HSL	hsl(238, 71%, 33%)
HSV	hsv(238, 83%, 56%)
CMYK	cmyk(83.2%, 80.4%, 0%, 43.9%)
CIE-LAB	lab(20.07, 40.78, -62.30)
CIE-LCH	lch(20.07, 74.45, 303.21°)
OKLab	oklab(32.84% -0.0014 -0.1804)
OKLCH	oklch(32.84% 0.18 269.6)
XYZ	xyz(5.7482, 3.0072, 26.2588)
Luminance	0.0301 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C8F #8F8B18

analogous

#18588F #181C8F #4F188F

triadic

#181C8F #8F181C #1C8F18

tetradic

#181C8F #8F1858 #8F8B18 #188F4F

square

#181C8F #8F1858 #8F8B18 #188F4F

split-complementary

#181C8F #8F4F18 #588F18

monochromatic

#060726 #0F125B #181C8F #2126C3 #4247DF

Accessibility & contrast

On white

13.11

#181C8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#181C8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C8F

13.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C8F	#FFFFFF	#000000	##FFFFFF
##181C8F	1.00	13.11	1.60	13.11
#FFFFFF	13.11	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003692

Deuteranopia (green-blind)

#002A8D

Tritanopia (blue-blind)

#004055

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #181c8f;
/* rgb */ color: rgb(24, 28, 143);
/* oklch */ color: oklch(32.8% 0.180 269.6);

Tailwind

colors: {
  custom: {
    50: '#6e5ab1',
    500: '#181c8f',
    950: '#000000',
  },
}

SCSS

$custom: #181c8f;
$custom-light: #6e5ab1;
$custom-dark: #000000;

JSON

{
  "hex": "#181c8f",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 143
  },
  "hsl": {
    "h": 237.983,
    "s": 71.257,
    "l": 32.745
  },
  "oklch": {
    "l": 0.32843,
    "c": 0.18045,
    "h": 269.6
  },
  "luminance": 0.03008
}

Semantic roles & 50–950 ramp

primary

#181C8F

secondary

#C0BC43

accent

#E83AEE

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #181C8F

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

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