#191F8B#191F8B

#191F8B is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.8% C 0.172 H 269.8°. Best body text is #FFFFFF at 13.04:1 contrast (WCAG AA passes).

Color values

HEX	#191F8B
RGB	rgb(25, 31, 139)
HSL	hsl(237, 70%, 32%)
HSV	hsv(237, 82%, 55%)
CMYK	cmyk(82%, 77.7%, 0%, 45.5%)
CIE-LAB	lab(20.24, 37.75, -59.52)
CIE-LCH	lch(20.24, 70.48, 302.39°)
OKLab	oklab(32.84% -0.0005 -0.1724)
OKLCH	oklch(32.84% 0.172 269.8)
XYZ	xyz(5.5495, 3.0501, 24.7173)
Luminance	0.0305 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191F8B #8B8519

analogous

#19588B #191F8B #4C198B

triadic

#191F8B #8B191F #1F8B19

tetradic

#191F8B #8B1958 #8B8519 #198B4C

square

#191F8B #8B1958 #8B8519 #198B4C

split-complementary

#191F8B #8B4C19 #588B19

monochromatic

#060823 #101357 #191F8B #222BBF #414ADD

Accessibility & contrast

On white

13.04

#191F8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#191F8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191F8B

13.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191F8B	#FFFFFF	#000000	##FFFFFF
##191F8B	1.00	13.04	1.61	13.04
#FFFFFF	13.04	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368E

Deuteranopia (green-blind)

#002B89

Tritanopia (blue-blind)

#003F54

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #191f8b;
/* rgb */ color: rgb(25, 31, 139);
/* oklch */ color: oklch(32.8% 0.172 269.8);

Tailwind

colors: {
  custom: {
    50: '#6d5cae',
    500: '#191f8b',
    950: '#000000',
  },
}

SCSS

$custom: #191f8b;
$custom-light: #6d5cae;
$custom-dark: #000000;

JSON

{
  "hex": "#191f8b",
  "rgb": {
    "r": 25,
    "g": 31,
    "b": 139
  },
  "hsl": {
    "h": 236.842,
    "s": 69.512,
    "l": 32.157
  },
  "oklch": {
    "l": 0.32839,
    "c": 0.1724,
    "h": 269.8
  },
  "luminance": 0.03051
}

Semantic roles & 50–950 ramp

primary

#191F8B

secondary

#BEB742

accent

#E33BEC

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080410

muted

#7B797F

Preview Lab

Preview with #191F8B

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

Preview Lab → · Contrast checker → · Palette generator →