#191B5B#191B5B

#191B5B is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.9% C 0.112 H 274.5°. Best body text is #FFFFFF at 15.56:1 contrast (WCAG AA passes).

Color values

HEX	#191B5B
RGB	rgb(25, 27, 91)
HSL	hsl(238, 57%, 23%)
HSV	hsv(238, 73%, 36%)
CMYK	cmyk(72.5%, 70.3%, 0%, 64.3%)
CIE-LAB	lab(14.09, 22.49, -38.63)
CIE-LCH	lch(14.09, 44.70, 300.21°)
OKLab	oklab(26.86% 0.0089 -0.1115)
OKLCH	oklch(26.86% 0.112 274.5)
XYZ	xyz(2.6805, 1.7456, 10.0912)
Luminance	0.0175 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191B5B #5B5919

analogous

#193C5B #191B5B #38195B

triadic

#191B5B #5B191B #1B5B19

tetradic

#191B5B #5B193C #5B5919 #195B38

square

#191B5B #5B193C #5B5919 #195B38

split-complementary

#191B5B #5B3819 #3C5B19

monochromatic

#070718 #0C0D2B #191B5B #26298B #3337BB

Accessibility & contrast

On white

15.56

#191B5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#191B5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191B5B

15.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191B5B	#FFFFFF	#000000	##FFFFFF
##191B5B	1.00	15.56	1.35	15.56
#FFFFFF	15.56	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00275D

Deuteranopia (green-blind)

#00215A

Tritanopia (blue-blind)

#002C38

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #191b5b;
/* rgb */ color: rgb(25, 27, 91);
/* oklch */ color: oklch(26.9% 0.112 274.5);

Tailwind

colors: {
  custom: {
    50: '#60578a',
    500: '#191b5b',
    950: '#000000',
  },
}

SCSS

$custom: #191b5b;
$custom-light: #60578a;
$custom-dark: #000000;

JSON

{
  "hex": "#191b5b",
  "rgb": {
    "r": 25,
    "g": 27,
    "b": 91
  },
  "hsl": {
    "h": 238.182,
    "s": 56.897,
    "l": 22.745
  },
  "oklch": {
    "l": 0.26863,
    "c": 0.11185,
    "h": 274.5
  },
  "luminance": 0.01746
}

Semantic roles & 50–950 ramp

primary

#191B5B

secondary

#918F3F

accent

#DC48E0

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#05030C

muted

#7A787D

Preview Lab

Preview with #191B5B

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

Preview Lab → · Contrast checker → · Palette generator →