#191B66#191B66

#191B66 is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.0% C 0.128 H 273.4°. Best body text is #FFFFFF at 15.11:1 contrast (WCAG AA passes).

Color values

HEX	#191B66
RGB	rgb(25, 27, 102)
HSL	hsl(238, 61%, 25%)
HSV	hsv(238, 75%, 40%)
CMYK	cmyk(75.5%, 73.5%, 0%, 60%)
CIE-LAB	lab(15.22, 26.72, -44.09)
CIE-LCH	lch(15.22, 51.55, 301.22°)
OKLab	oklab(28.03% 0.0075 -0.1275)
OKLCH	oklch(28.03% 0.128 273.4)
XYZ	xyz(3.1903, 1.9495, 12.7760)
Luminance	0.0195 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191B66 #666419

analogous

#194166 #191B66 #3E1966

triadic

#191B66 #66191B #1B6619

tetradic

#191B66 #661941 #666419 #19663E

square

#191B66 #661941 #666419 #19663E

split-complementary

#191B66 #663E19 #416619

monochromatic

#060719 #0D0E35 #191B66 #252897 #3135C8

Accessibility & contrast

On white

15.11

#191B66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#191B66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191B66

15.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191B66	#FFFFFF	#000000	##FFFFFF
##191B66	1.00	15.11	1.39	15.11
#FFFFFF	15.11	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A68

Deuteranopia (green-blind)

#002265

Tritanopia (blue-blind)

#00303E

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #191b66;
/* rgb */ color: rgb(25, 27, 102);
/* oklch */ color: oklch(28.0% 0.128 273.4);

Tailwind

colors: {
  custom: {
    50: '#635892',
    500: '#191b66',
    950: '#000000',
  },
}

SCSS

$custom: #191b66;
$custom-light: #635892;
$custom-dark: #000000;

JSON

{
  "hex": "#191b66",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 102
  },
  "hsl": {
    "h": 238.442,
    "s": 60.63,
    "l": 24.902
  },
  "oklch": {
    "l": 0.28026,
    "c": 0.12768,
    "h": 273.4
  },
  "luminance": 0.0195
}

Semantic roles & 50–950 ramp

primary

#191B66

secondary

#9C993F

accent

#E044E4

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#06030D

muted

#7A787E

Preview Lab

Preview with #191B66

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

Preview Lab → · Contrast checker → · Palette generator →