#191B71#191B71

#191B71 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.2% C 0.143 H 272.3°. Best body text is #FFFFFF at 14.62:1 contrast (WCAG AA passes).

Color values

HEX	#191B71
RGB	rgb(25, 27, 113)
HSL	hsl(239, 64%, 27%)
HSV	hsv(239, 78%, 44%)
CMYK	cmyk(77.9%, 76.1%, 0%, 55.7%)
CIE-LAB	lab(16.42, 30.83, -49.30)
CIE-LCH	lch(16.42, 58.15, 302.02°)
OKLab	oklab(29.24% 0.0057 -0.1427)
OKLCH	oklch(29.24% 0.143 272.3)
XYZ	xyz(3.7725, 2.1824, 15.8420)
Luminance	0.0218 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191B71 #716F19

analogous

#194771 #191B71 #431971

triadic

#191B71 #71191B #1B7119

tetradic

#191B71 #711947 #716F19 #197143

square

#191B71 #711947 #716F19 #197143

split-complementary

#191B71 #714319 #477119

monochromatic

#060619 #0E0F3F #191B71 #2427A3 #3336D2

Accessibility & contrast

On white

14.62

#191B71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#191B71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191B71

14.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191B71	#FFFFFF	#000000	##FFFFFF
##191B71	1.00	14.62	1.44	14.62
#FFFFFF	14.62	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D74

Deuteranopia (green-blind)

#00246F

Tritanopia (blue-blind)

#003444

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #191b71;
/* rgb */ color: rgb(25, 27, 113);
/* oklch */ color: oklch(29.2% 0.143 272.3);

Tailwind

colors: {
  custom: {
    50: '#66589b',
    500: '#191b71',
    950: '#000000',
  },
}

SCSS

$custom: #191b71;
$custom-light: #66589b;
$custom-dark: #000000;

JSON

{
  "hex": "#191b71",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 113
  },
  "hsl": {
    "h": 238.636,
    "s": 63.768,
    "l": 27.059
  },
  "oklch": {
    "l": 0.29244,
    "c": 0.14278,
    "h": 272.3
  },
  "luminance": 0.02183
}

Semantic roles & 50–950 ramp

primary

#191B71

secondary

#A6A440

accent

#E341E7

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #191B71

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

Preview Lab → · Contrast checker → · Palette generator →