#191B8B#191B8B

#191B8B is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.3% C 0.176 H 270.2°. Best body text is #FFFFFF at 13.37:1 contrast (WCAG AA passes).

Color values

HEX	#191B8B
RGB	rgb(25, 27, 139)
HSL	hsl(239, 70%, 32%)
HSV	hsv(239, 82%, 55%)
CMYK	cmyk(82%, 80.6%, 0%, 45.5%)
CIE-LAB	lab(19.45, 40.03, -60.83)
CIE-LCH	lch(19.45, 72.82, 303.34°)
OKLab	oklab(32.28% 0.0008 -0.1762)
OKLCH	oklch(32.28% 0.176 270.2)
XYZ	xyz(5.4515, 2.8540, 24.6847)
Luminance	0.0285 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191B8B #8B8919

analogous

#19548B #191B8B #50198B

triadic

#191B8B #8B191B #1B8B19

tetradic

#191B8B #8B1954 #8B8919 #198B50

square

#191B8B #8B1954 #8B8919 #198B50

split-complementary

#191B8B #8B5019 #548B19

monochromatic

#060723 #101157 #191B8B #2225BF #4144DD

Accessibility & contrast

On white

13.37

#191B8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#191B8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191B8B

13.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191B8B	#FFFFFF	#000000	##FFFFFF
##191B8B	1.00	13.37	1.57	13.37
#FFFFFF	13.37	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00358E

Deuteranopia (green-blind)

#002989

Tritanopia (blue-blind)

#003E53

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #191b8b;
/* rgb */ color: rgb(25, 27, 139);
/* oklch */ color: oklch(32.3% 0.176 270.2);

Tailwind

colors: {
  custom: {
    50: '#6d5aae',
    500: '#191b8b',
    950: '#000000',
  },
}

SCSS

$custom: #191b8b;
$custom-light: #6d5aae;
$custom-dark: #000000;

JSON

{
  "hex": "#191b8b",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 139
  },
  "hsl": {
    "h": 238.947,
    "s": 69.512,
    "l": 32.157
  },
  "oklch": {
    "l": 0.3228,
    "c": 0.17616,
    "h": 270.2
  },
  "luminance": 0.02855
}

Semantic roles & 50–950 ramp

primary

#191B8B

secondary

#BEBC42

accent

#E93BEC

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080410

muted

#7B797F

Preview Lab

Preview with #191B8B

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

Preview Lab → · Contrast checker → · Palette generator →