#191F5B#191F5B

#191F5B is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.7% C 0.106 H 272.9°. Best body text is #FFFFFF at 15.13:1 contrast (WCAG AA passes).

Color values

HEX	#191F5B
RGB	rgb(25, 31, 91)
HSL	hsl(235, 57%, 23%)
HSV	hsv(235, 73%, 36%)
CMYK	cmyk(72.5%, 65.9%, 0%, 64.3%)
CIE-LAB	lab(15.18, 19.64, -36.85)
CIE-LCH	lch(15.18, 41.76, 298.05°)
OKLab	oklab(27.66% 0.0054 -0.1063)
OKLCH	oklch(27.66% 0.106 272.9)
XYZ	xyz(2.7786, 1.9417, 10.1239)
Luminance	0.0194 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191F5B #5B5519

analogous

#19405B #191F5B #34195B

triadic

#191F5B #5B191F #1F5B19

tetradic

#191F5B #5B1940 #5B5519 #195B34

square

#191F5B #5B1940 #5B5519 #195B34

split-complementary

#191F5B #5B3419 #405B19

monochromatic

#070818 #0C0F2B #191F5B #262F8B #3340BB

Accessibility & contrast

On white

15.13

#191F5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#191F5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191F5B

15.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191F5B	#FFFFFF	#000000	##FFFFFF
##191F5B	1.00	15.13	1.39	15.13
#FFFFFF	15.13	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00295D

Deuteranopia (green-blind)

#00235A

Tritanopia (blue-blind)

#002E39

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #191f5b;
/* rgb */ color: rgb(25, 31, 91);
/* oklch */ color: oklch(27.7% 0.106 272.9);

Tailwind

colors: {
  custom: {
    50: '#605a8a',
    500: '#191f5b',
    950: '#000000',
  },
}

SCSS

$custom: #191f5b;
$custom-light: #605a8a;
$custom-dark: #000000;

JSON

{
  "hex": "#191f5b",
  "rgb": {
    "r": 25,
    "g": 31,
    "b": 91
  },
  "hsl": {
    "h": 234.545,
    "s": 56.897,
    "l": 22.745
  },
  "oklch": {
    "l": 0.2766,
    "c": 0.1064,
    "h": 272.9
  },
  "luminance": 0.01942
}

Semantic roles & 50–950 ramp

primary

#191F5B

secondary

#918A3F

accent

#D248E0

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #191F5B

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

Preview Lab → · Contrast checker → · Palette generator →