#191B57#191B57

#191B57 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.5% C 0.106 H 275.0°. Best body text is #FFFFFF at 15.72:1 contrast (WCAG AA passes).

Color values

HEX	#191B57
RGB	rgb(25, 27, 87)
HSL	hsl(238, 55%, 22%)
HSV	hsv(238, 71%, 34%)
CMYK	cmyk(71.3%, 69%, 0%, 65.9%)
CIE-LAB	lab(13.70, 20.93, -36.58)
CIE-LCH	lch(13.70, 42.14, 299.78°)
OKLab	oklab(26.46% 0.0092 -0.1055)
OKLCH	oklch(26.46% 0.106 275)
XYZ	xyz(2.5126, 1.6784, 9.2065)
Luminance	0.0168 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191B57 #575519

analogous

#193A57 #191B57 #361957

triadic

#191B57 #57191B #1B5719

tetradic

#191B57 #57193A #575519 #195736

square

#191B57 #57193A #575519 #195736

split-complementary

#191B57 #573619 #3A5719

monochromatic

#070718 #0B0C27 #191B57 #272A87 #3439B6

Accessibility & contrast

On white

15.72

#191B57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#191B57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191B57

15.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191B57	#FFFFFF	#000000	##FFFFFF
##191B57	1.00	15.72	1.34	15.72
#FFFFFF	15.72	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002659

Deuteranopia (green-blind)

#002056

Tritanopia (blue-blind)

#002A36

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #191b57;
/* rgb */ color: rgb(25, 27, 87);
/* oklch */ color: oklch(26.5% 0.106 275.0);

Tailwind

colors: {
  custom: {
    50: '#5f5787',
    500: '#191b57',
    950: '#000000',
  },
}

SCSS

$custom: #191b57;
$custom-light: #5f5787;
$custom-dark: #000000;

JSON

{
  "hex": "#191b57",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 87
  },
  "hsl": {
    "h": 238.065,
    "s": 55.357,
    "l": 21.961
  },
  "oklch": {
    "l": 0.26457,
    "c": 0.10588,
    "h": 275
  },
  "luminance": 0.01679
}

Semantic roles & 50–950 ramp

primary

#191B57

secondary

#8D8B3E

accent

#DA49DF

background

#F5F5F8

surface

#EAE9EF

border

#C6C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #191B57

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

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