#191B4D#191B4D

#191B4D is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.5% C 0.090 H 276.2°. Best body text is #FFFFFF at 16.09:1 contrast (WCAG AA passes).

Color values

HEX	#191B4D
RGB	rgb(25, 27, 77)
HSL	hsl(238, 51%, 20%)
HSV	hsv(238, 68%, 30%)
CMYK	cmyk(67.5%, 64.9%, 0%, 69.8%)
CIE-LAB	lab(12.77, 16.99, -31.27)
CIE-LCH	lch(12.77, 35.59, 298.51°)
OKLab	oklab(25.49% 0.0097 -0.0899)
OKLCH	oklch(25.49% 0.09 276.2)
XYZ	xyz(2.1320, 1.5262, 7.2020)
Luminance	0.0153 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191B4D #4D4B19

analogous

#19354D #191B4D #31194D

triadic

#191B4D #4D191B #1B4D19

tetradic

#191B4D #4D1935 #4D4B19 #194D31

square

#191B4D #4D1935 #4D4B19 #194D31

split-complementary

#191B4D #4D3119 #354D19

monochromatic

#080817 #0A0B1F #191B4D #282B7B #373BA9

Accessibility & contrast

On white

16.09

#191B4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#191B4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191B4D

16.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191B4D	#FFFFFF	#000000	##FFFFFF
##191B4D	1.00	16.09	1.31	16.09
#FFFFFF	16.09	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00234F

Deuteranopia (green-blind)

#001F4C

Tritanopia (blue-blind)

#002731

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #191b4d;
/* rgb */ color: rgb(25, 27, 77);
/* oklch */ color: oklch(25.5% 0.090 276.2);

Tailwind

colors: {
  custom: {
    50: '#5c577f',
    500: '#191b4d',
    950: '#000000',
  },
}

SCSS

$custom: #191b4d;
$custom-light: #5c577f;
$custom-dark: #000000;

JSON

{
  "hex": "#191b4d",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 77
  },
  "hsl": {
    "h": 237.692,
    "s": 50.98,
    "l": 20
  },
  "oklch": {
    "l": 0.25486,
    "c": 0.09043,
    "h": 276.2
  },
  "luminance": 0.01526
}

Semantic roles & 50–950 ramp

primary

#191B4D

secondary

#83813E

accent

#D54DDA

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #191B4D

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

Preview Lab → · Contrast checker → · Palette generator →