#191B4B#191B4B

#191B4B is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.3% C 0.087 H 276.4°. Best body text is #FFFFFF at 16.16:1 contrast (WCAG AA passes).

Color values

HEX	#191B4B
RGB	rgb(25, 27, 75)
HSL	hsl(238, 50%, 20%)
HSV	hsv(238, 67%, 29%)
CMYK	cmyk(66.7%, 64%, 0%, 70.6%)
CIE-LAB	lab(12.60, 16.19, -30.18)
CIE-LCH	lch(12.60, 34.25, 298.21°)
OKLab	oklab(25.3% 0.0097 -0.0867)
OKLCH	oklch(25.3% 0.087 276.4)
XYZ	xyz(2.0624, 1.4984, 6.8358)
Luminance	0.0150 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191B4B #4B4919

analogous

#19344B #191B4B #30194B

triadic

#191B4B #4B191B #1B4B19

tetradic

#191B4B #4B1934 #4B4919 #194B30

square

#191B4B #4B1934 #4B4919 #194B30

split-complementary

#191B4B #4B3019 #344B19

monochromatic

#080817 #0A0A1D #191B4B #282C79 #383CA7

Accessibility & contrast

On white

16.16

#191B4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#191B4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191B4B

16.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191B4B	#FFFFFF	#000000	##FFFFFF
##191B4B	1.00	16.16	1.30	16.16
#FFFFFF	16.16	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00234D

Deuteranopia (green-blind)

#001F4A

Tritanopia (blue-blind)

#002630

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #191b4b;
/* rgb */ color: rgb(25, 27, 75);
/* oklch */ color: oklch(25.3% 0.087 276.4);

Tailwind

colors: {
  custom: {
    50: '#5c577e',
    500: '#191b4b',
    950: '#000000',
  },
}

SCSS

$custom: #191b4b;
$custom-light: #5c577e;
$custom-dark: #000000;

JSON

{
  "hex": "#191b4b",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 75
  },
  "hsl": {
    "h": 237.6,
    "s": 50,
    "l": 19.608
  },
  "oklch": {
    "l": 0.253,
    "c": 0.08724,
    "h": 276.4
  },
  "luminance": 0.01499
}

Semantic roles & 50–950 ramp

primary

#191B4B

secondary

#817F3E

accent

#D44EDA

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #191B4B

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

Preview Lab → · Contrast checker → · Palette generator →