#191B40#191B40

#191B40 is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.3% C 0.069 H 277.6°. Best body text is #FFFFFF at 16.51:1 contrast (WCAG AA passes).

Color values

HEX	#191B40
RGB	rgb(25, 27, 64)
HSL	hsl(237, 44%, 17%)
HSV	hsv(237, 61%, 25%)
CMYK	cmyk(60.9%, 57.8%, 0%, 74.9%)
CIE-LAB	lab(11.69, 11.85, -23.98)
CIE-LCH	lch(11.69, 26.75, 296.31°)
OKLab	oklab(24.34% 0.0092 -0.0684)
OKLCH	oklch(24.34% 0.069 277.6)
XYZ	xyz(1.7180, 1.3606, 5.0216)
Luminance	0.0136 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191B40 #403E19

analogous

#192F40 #191B40 #2B1940

triadic

#191B40 #40191B #1B4019

tetradic

#191B40 #40192F #403E19 #19402B

square

#191B40 #40192F #403E19 #19402B

split-complementary

#191B40 #402B19 #2F4019

monochromatic

#090916 #090916 #191B40 #2A2E6C #3B4098

Accessibility & contrast

On white

16.51

#191B40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#191B40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191B40

16.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191B40	#FFFFFF	#000000	##FFFFFF
##191B40	1.00	16.51	1.27	16.51
#FFFFFF	16.51	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#082041

Deuteranopia (green-blind)

#041D3F

Tritanopia (blue-blind)

#07232A

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #191b40;
/* rgb */ color: rgb(25, 27, 64);
/* oklch */ color: oklch(24.3% 0.069 277.6);

Tailwind

colors: {
  custom: {
    50: '#5a5775',
    500: '#191b40',
    950: '#000000',
  },
}

SCSS

$custom: #191b40;
$custom-light: #5a5775;
$custom-dark: #000000;

JSON

{
  "hex": "#191b40",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 64
  },
  "hsl": {
    "h": 236.923,
    "s": 43.82,
    "l": 17.451
  },
  "oklch": {
    "l": 0.24336,
    "c": 0.06905,
    "h": 277.6
  },
  "luminance": 0.01361
}

Semantic roles & 50–950 ramp

primary

#191B40

secondary

#76733F

accent

#CD54D4

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040308

muted

#79787B

Preview Lab

Preview with #191B40

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

Preview Lab → · Contrast checker → · Palette generator →