#191B81#191B81

#191B81 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.1% C 0.164 H 271.0°. Best body text is #FFFFFF at 13.86:1 contrast (WCAG AA passes).

Color values

HEX	#191B81
RGB	rgb(25, 27, 129)
HSL	hsl(239, 68%, 30%)
HSV	hsv(239, 81%, 51%)
CMYK	cmyk(80.6%, 79.1%, 0%, 49.4%)
CIE-LAB	lab(18.25, 36.57, -56.51)
CIE-LCH	lch(18.25, 67.32, 302.91°)
OKLab	oklab(31.09% 0.0027 -0.1636)
OKLCH	oklch(31.09% 0.164 271)
XYZ	xyz(4.7539, 2.5750, 21.0111)
Luminance	0.0258 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191B81 #817F19

analogous

#194F81 #191B81 #4B1981

triadic

#191B81 #81191B #1B8119

tetradic

#191B81 #81194F #817F19 #19814B

square

#191B81 #81194F #817F19 #19814B

split-complementary

#191B81 #814B19 #4F8119

monochromatic

#05061A #0F104E #191B81 #2326B4 #3B3ED9

Accessibility & contrast

On white

13.86

#191B81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#191B81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191B81

13.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191B81	#FFFFFF	#000000	##FFFFFF
##191B81	1.00	13.86	1.52	13.86
#FFFFFF	13.86	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003284

Deuteranopia (green-blind)

#00277F

Tritanopia (blue-blind)

#003A4D

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #191b81;
/* rgb */ color: rgb(25, 27, 129);
/* oklch */ color: oklch(31.1% 0.164 271.0);

Tailwind

colors: {
  custom: {
    50: '#6a59a7',
    500: '#191b81',
    950: '#000000',
  },
}

SCSS

$custom: #191b81;
$custom-light: #6a59a7;
$custom-dark: #000000;

JSON

{
  "hex": "#191b81",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 129
  },
  "hsl": {
    "h": 238.846,
    "s": 67.532,
    "l": 30.196
  },
  "oklch": {
    "l": 0.31091,
    "c": 0.16367,
    "h": 271
  },
  "luminance": 0.02576
}

Semantic roles & 50–950 ramp

primary

#191B81

secondary

#B5B341

accent

#E73DEA

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#080310

muted

#7A787F

Preview Lab

Preview with #191B81

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

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