#191F57#191F57

#191F57 is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.3% C 0.100 H 273.1°. Best body text is #FFFFFF at 15.27:1 contrast (WCAG AA passes).

Color values

HEX	#191F57
RGB	rgb(25, 31, 87)
HSL	hsl(234, 55%, 22%)
HSV	hsv(234, 71%, 34%)
CMYK	cmyk(71.3%, 64.4%, 0%, 65.9%)
CIE-LAB	lab(14.81, 18.04, -34.76)
CIE-LCH	lch(14.81, 39.16, 297.43°)
OKLab	oklab(27.28% 0.0055 -0.1001)
OKLCH	oklch(27.28% 0.1 273.1)
XYZ	xyz(2.6106, 1.8745, 9.2392)
Luminance	0.0187 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191F57 #575119

analogous

#193E57 #191F57 #321957

triadic

#191F57 #57191F #1F5719

tetradic

#191F57 #57193E #575119 #195732

square

#191F57 #57193E #575119 #195732

split-complementary

#191F57 #573219 #3E5719

monochromatic

#070818 #0B0E27 #191F57 #273087 #3441B6

Accessibility & contrast

On white

15.27

#191F57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#191F57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191F57

15.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191F57	#FFFFFF	#000000	##FFFFFF
##191F57	1.00	15.27	1.38	15.27
#FFFFFF	15.27	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002859

Deuteranopia (green-blind)

#002356

Tritanopia (blue-blind)

#002D37

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #191f57;
/* rgb */ color: rgb(25, 31, 87);
/* oklch */ color: oklch(27.3% 0.100 273.1);

Tailwind

colors: {
  custom: {
    50: '#5f5a87',
    500: '#191f57',
    950: '#000000',
  },
}

SCSS

$custom: #191f57;
$custom-light: #5f5a87;
$custom-dark: #000000;

JSON

{
  "hex": "#191f57",
  "rgb": {
    "r": 25,
    "g": 31,
    "b": 87
  },
  "hsl": {
    "h": 234.194,
    "s": 55.357,
    "l": 21.961
  },
  "oklch": {
    "l": 0.27278,
    "c": 0.10026,
    "h": 273.1
  },
  "luminance": 0.01875
}

Semantic roles & 50–950 ramp

primary

#191F57

secondary

#8D863E

accent

#D049DF

background

#F5F5F8

surface

#EAE9EF

border

#C6C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #191F57

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

Preview Lab → · Contrast checker → · Palette generator →