#191B4E#191B4E

#191B4E is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.6% C 0.092 H 276.0°. Best body text is #FFFFFF at 16.05:1 contrast (WCAG AA passes).

Color values

HEX	#191B4E
RGB	rgb(25, 27, 78)
HSL	hsl(238, 51%, 20%)
HSV	hsv(238, 68%, 31%)
CMYK	cmyk(67.9%, 65.4%, 0%, 69.4%)
CIE-LAB	lab(12.86, 17.38, -31.82)
CIE-LCH	lch(12.86, 36.25, 298.65°)
OKLab	oklab(25.58% 0.0097 -0.0915)
OKLCH	oklch(25.58% 0.092 276)
XYZ	xyz(2.1675, 1.5404, 7.3894)
Luminance	0.0154 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191B4E #4E4C19

analogous

#19354E #191B4E #31194E

triadic

#191B4E #4E191B #1B4E19

tetradic

#191B4E #4E1935 #4E4C19 #194E31

square

#191B4E #4E1935 #4E4C19 #194E31

split-complementary

#191B4E #4E3119 #354E19

monochromatic

#070817 #0A0B20 #191B4E #282B7C #373BAB

Accessibility & contrast

On white

16.05

#191B4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#191B4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191B4E

16.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191B4E	#FFFFFF	#000000	##FFFFFF
##191B4E	1.00	16.05	1.31	16.05
#FFFFFF	16.05	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002450

Deuteranopia (green-blind)

#001F4D

Tritanopia (blue-blind)

#002731

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #191b4e;
/* rgb */ color: rgb(25, 27, 78);
/* oklch */ color: oklch(25.6% 0.092 276.0);

Tailwind

colors: {
  custom: {
    50: '#5d5780',
    500: '#191b4e',
    950: '#000000',
  },
}

SCSS

$custom: #191b4e;
$custom-light: #5d5780;
$custom-dark: #000000;

JSON

{
  "hex": "#191b4e",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 78
  },
  "hsl": {
    "h": 237.736,
    "s": 51.456,
    "l": 20.196
  },
  "oklch": {
    "l": 0.2558,
    "c": 0.09201,
    "h": 276
  },
  "luminance": 0.01541
}

Semantic roles & 50–950 ramp

primary

#191B4E

secondary

#84823E

accent

#D64DDB

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #191B4E

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

Preview Lab → · Contrast checker → · Palette generator →