#191B9E#191B9E

#191B9E is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.6% C 0.199 H 269.1°. Best body text is #FFFFFF at 12.41:1 contrast (WCAG AA passes).

Color values

HEX	#191B9E
RGB	rgb(25, 27, 158)
HSL	hsl(239, 73%, 36%)
HSV	hsv(239, 84%, 62%)
CMYK	cmyk(84.2%, 82.9%, 0%, 38%)
CIE-LAB	lab(21.79, 46.31, -68.69)
CIE-LCH	lch(21.79, 82.84, 303.98°)
OKLab	oklab(34.59% -0.0031 -0.1989)
OKLCH	oklch(34.59% 0.199 269.1)
XYZ	xyz(6.9623, 3.4583, 32.6417)
Luminance	0.0346 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191B9E #9E9C19

analogous

#195D9E #191B9E #59199E

triadic

#191B9E #9E191B #1B9E19

tetradic

#191B9E #9E195D #9E9C19 #199E59

square

#191B9E #9E195D #9E9C19 #199E59

split-complementary

#191B9E #9E5919 #5D9E19

monochromatic

#080934 #111269 #191B9E #2124D3 #4E51E3

Accessibility & contrast

On white

12.41

#191B9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#191B9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191B9E

12.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191B9E	#FFFFFF	#000000	##FFFFFF
##191B9E	1.00	12.41	1.69	12.41
#FFFFFF	12.41	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003BA2

Deuteranopia (green-blind)

#002D9C

Tritanopia (blue-blind)

#00455E

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #191b9e;
/* rgb */ color: rgb(25, 27, 158);
/* oklch */ color: oklch(34.6% 0.199 269.1);

Tailwind

colors: {
  custom: {
    50: '#725bbc',
    500: '#191b9e',
    950: '#000000',
  },
}

SCSS

$custom: #191b9e;
$custom-light: #725bbc;
$custom-dark: #000000;

JSON

{
  "hex": "#191b9e",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 158
  },
  "hsl": {
    "h": 239.098,
    "s": 72.678,
    "l": 35.882
  },
  "oklch": {
    "l": 0.3459,
    "c": 0.19894,
    "h": 269.1
  },
  "luminance": 0.03459
}

Semantic roles & 50–950 ramp

primary

#191B9E

secondary

#C5C34E

accent

#ED38EF

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #191B9E

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

Preview Lab → · Contrast checker → · Palette generator →