#1B199E#1B199E

#1B199E is a dark, vivid blue. Relative luminance 0.034; OKLCH L 34.5% C 0.200 H 269.8°. Best body text is #FFFFFF at 12.50:1 contrast (WCAG AA passes).

Color values

HEX	#1B199E
RGB	rgb(27, 25, 158)
HSL	hsl(241, 73%, 36%)
HSV	hsv(241, 84%, 62%)
CMYK	cmyk(82.9%, 84.2%, 0%, 38%)
CIE-LAB	lab(21.57, 47.36, -69.07)
CIE-LCH	lch(21.57, 83.75, 304.44°)
OKLab	oklab(34.46% -0.0006 -0.1999)
OKLCH	oklch(34.46% 0.2 269.8)
XYZ	xyz(6.9691, 3.3961, 32.6293)
Luminance	0.0340 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B199E #9C9E19

analogous

#19599E #1B199E #5D199E

triadic

#1B199E #9E1B19 #199E1B

tetradic

#1B199E #9E1959 #9C9E19 #199E5D

square

#1B199E #9E1959 #9C9E19 #199E5D

split-complementary

#1B199E #9E5D19 #599E19

monochromatic

#090834 #121169 #1B199E #2421D3 #514EE3

Accessibility & contrast

On white

12.50

#1B199E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1B199E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B199E

12.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B199E	#FFFFFF	#000000	##FFFFFF
##1B199E	1.00	12.50	1.68	12.50
#FFFFFF	12.50	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003AA2

Deuteranopia (green-blind)

#002D9C

Tritanopia (blue-blind)

#00455D

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b199e;
/* rgb */ color: rgb(27, 25, 158);
/* oklch */ color: oklch(34.5% 0.200 269.8);

Tailwind

colors: {
  custom: {
    50: '#735abc',
    500: '#1b199e',
    950: '#000000',
  },
}

SCSS

$custom: #1b199e;
$custom-light: #735abc;
$custom-dark: #000000;

JSON

{
  "hex": "#1b199e",
  "rgb": {
    "r": 27,
    "g": 25,
    "b": 158
  },
  "hsl": {
    "h": 240.902,
    "s": 72.678,
    "l": 35.882
  },
  "oklch": {
    "l": 0.34459,
    "c": 0.19994,
    "h": 269.8
  },
  "luminance": 0.03397
}

Semantic roles & 50–950 ramp

primary

#1B199E

secondary

#C3C54E

accent

#EF38ED

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1B199E

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

Preview Lab → · Contrast checker → · Palette generator →