#191B53#191B53

#191B53 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.1% C 0.100 H 275.5°. Best body text is #FFFFFF at 15.87:1 contrast (WCAG AA passes).

Color values

HEX	#191B53
RGB	rgb(25, 27, 83)
HSL	hsl(238, 54%, 21%)
HSV	hsv(238, 70%, 33%)
CMYK	cmyk(69.9%, 67.5%, 0%, 67.5%)
CIE-LAB	lab(13.32, 19.36, -34.48)
CIE-LCH	lch(13.32, 39.55, 299.31°)
OKLab	oklab(26.06% 0.0095 -0.0993)
OKLCH	oklch(26.06% 0.1 275.5)
XYZ	xyz(2.3537, 1.6149, 8.3696)
Luminance	0.0162 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191B53 #535119

analogous

#193853 #191B53 #341953

triadic

#191B53 #53191B #1B5319

tetradic

#191B53 #531938 #535119 #195334

square

#191B53 #531938 #535119 #195334

split-complementary

#191B53 #533419 #385319

monochromatic

#070818 #0B0C24 #191B53 #272A82 #353AB1

Accessibility & contrast

On white

15.87

#191B53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#191B53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191B53

15.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191B53	#FFFFFF	#000000	##FFFFFF
##191B53	1.00	15.87	1.32	15.87
#FFFFFF	15.87	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002555

Deuteranopia (green-blind)

#002052

Tritanopia (blue-blind)

#002934

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #191b53;
/* rgb */ color: rgb(25, 27, 83);
/* oklch */ color: oklch(26.1% 0.100 275.5);

Tailwind

colors: {
  custom: {
    50: '#5e5784',
    500: '#191b53',
    950: '#000000',
  },
}

SCSS

$custom: #191b53;
$custom-light: #5e5784;
$custom-dark: #000000;

JSON

{
  "hex": "#191b53",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 83
  },
  "hsl": {
    "h": 237.931,
    "s": 53.704,
    "l": 21.176
  },
  "oklch": {
    "l": 0.26061,
    "c": 0.0998,
    "h": 275.5
  },
  "luminance": 0.01615
}

Semantic roles & 50–950 ramp

primary

#191B53

secondary

#89873E

accent

#D84BDD

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #191B53

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

Preview Lab → · Contrast checker → · Palette generator →