#191B3D#191B3D

#191B3D is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.1% C 0.064 H 277.9°. Best body text is #FFFFFF at 16.60:1 contrast (WCAG AA passes).

Color values

HEX	#191B3D
RGB	rgb(25, 27, 61)
HSL	hsl(237, 42%, 17%)
HSV	hsv(237, 59%, 24%)
CMYK	cmyk(59%, 55.7%, 0%, 76.1%)
CIE-LAB	lab(11.47, 10.68, -22.22)
CIE-LCH	lch(11.47, 24.66, 295.67°)
OKLab	oklab(24.09% 0.0088 -0.0633)
OKLCH	oklch(24.09% 0.064 277.9)
XYZ	xyz(1.6349, 1.3274, 4.5840)
Luminance	0.0133 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191B3D #3D3B19

analogous

#192D3D #191B3D #29193D

triadic

#191B3D #3D191B #1B3D19

tetradic

#191B3D #3D192D #3D3B19 #193D29

square

#191B3D #3D192D #3D3B19 #193D29

split-complementary

#191B3D #3D2919 #2D3D19

monochromatic

#090A16 #090A16 #191B3D #2B2E68 #3D4194

Accessibility & contrast

On white

16.60

#191B3D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#191B3D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191B3D

16.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191B3D	#FFFFFF	#000000	##FFFFFF
##191B3D	1.00	16.60	1.27	16.60
#FFFFFF	16.60	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B203E

Deuteranopia (green-blind)

#081D3C

Tritanopia (blue-blind)

#0A2229

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #191b3d;
/* rgb */ color: rgb(25, 27, 61);
/* oklch */ color: oklch(24.1% 0.064 277.9);

Tailwind

colors: {
  custom: {
    50: '#595773',
    500: '#191b3d',
    950: '#000000',
  },
}

SCSS

$custom: #191b3d;
$custom-light: #595773;
$custom-dark: #000000;

JSON

{
  "hex": "#191b3d",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 61
  },
  "hsl": {
    "h": 236.667,
    "s": 41.86,
    "l": 16.863
  },
  "oklch": {
    "l": 0.24092,
    "c": 0.0639,
    "h": 277.9
  },
  "luminance": 0.01327
}

Semantic roles & 50–950 ramp

primary

#191B3D

secondary

#73703F

accent

#CB56D2

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#040308

muted

#79787B

Preview Lab

Preview with #191B3D

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

Preview Lab → · Contrast checker → · Palette generator →