#1B199C#1B199C

#1B199C is a dark, vivid blue. Relative luminance 0.033; OKLCH L 34.2% C 0.198 H 269.9°. Best body text is #FFFFFF at 12.61:1 contrast (WCAG AA passes).

Color values

HEX	#1B199C
RGB	rgb(27, 25, 156)
HSL	hsl(241, 72%, 35%)
HSV	hsv(241, 84%, 61%)
CMYK	cmyk(82.7%, 84%, 0%, 38.8%)
CIE-LAB	lab(21.31, 46.72, -68.27)
CIE-LCH	lch(21.31, 82.73, 304.39°)
OKLab	oklab(34.21% -0.0002 -0.1976)
OKLCH	oklch(34.21% 0.198 269.9)
XYZ	xyz(6.7983, 3.3278, 31.7301)
Luminance	0.0333 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B199C #9A9C19

analogous

#19589C #1B199C #5C199C

triadic

#1B199C #9C1B19 #199C1B

tetradic

#1B199C #9C1958 #9A9C19 #199C5C

square

#1B199C #9C1958 #9A9C19 #199C5C

split-complementary

#1B199C #9C5C19 #589C19

monochromatic

#090833 #121167 #1B199C #2421D1 #4F4DE2

Accessibility & contrast

On white

12.61

#1B199C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1B199C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B199C

12.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B199C	#FFFFFF	#000000	##FFFFFF
##1B199C	1.00	12.61	1.67	12.61
#FFFFFF	12.61	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003AA0

Deuteranopia (green-blind)

#002C9A

Tritanopia (blue-blind)

#00445C

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1b199c;
/* rgb */ color: rgb(27, 25, 156);
/* oklch */ color: oklch(34.2% 0.198 269.9);

Tailwind

colors: {
  custom: {
    50: '#725abb',
    500: '#1b199c',
    950: '#000000',
  },
}

SCSS

$custom: #1b199c;
$custom-light: #725abb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b199c",
  "rgb": {
    "r": 27,
    "g": 25,
    "b": 156
  },
  "hsl": {
    "h": 240.916,
    "s": 72.376,
    "l": 35.49
  },
  "oklch": {
    "l": 0.34211,
    "c": 0.19761,
    "h": 269.9
  },
  "luminance": 0.03329
}

Semantic roles & 50–950 ramp

primary

#1B199C

secondary

#C3C44C

accent

#EF39EC

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1B199C

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

Preview Lab → · Contrast checker → · Palette generator →