#191F3F#191F3F

#191F3F is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.2% C 0.061 H 273.3°. Best body text is #FFFFFF at 16.04:1 contrast (WCAG AA passes).

Color values

HEX	#191F3F
RGB	rgb(25, 31, 63)
HSL	hsl(231, 43%, 17%)
HSV	hsv(231, 60%, 25%)
CMYK	cmyk(60.3%, 50.8%, 0%, 75.3%)
CIE-LAB	lab(12.89, 8.43, -21.35)
CIE-LCH	lch(12.89, 22.95, 291.55°)
OKLab	oklab(25.22% 0.0035 -0.0607)
OKLCH	oklch(25.22% 0.061 273.3)
XYZ	xyz(1.7878, 1.5454, 4.9057)
Luminance	0.0155 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#191F3F #3F3919

analogous

#19323F #191F3F #26193F

triadic

#191F3F #3F191F #1F3F19

tetradic

#191F3F #3F1932 #3F3919 #193F26

square

#191F3F #3F1932 #3F3919 #193F26

split-complementary

#191F3F #3F2619 #323F19

monochromatic

#090B16 #090B16 #191F3F #2A356B #3C4A97

Accessibility & contrast

On white

16.04

#191F3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#191F3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #191F3F

16.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##191F3F	#FFFFFF	#000000	##FFFFFF
##191F3F	1.00	16.04	1.31	16.04
#FFFFFF	16.04	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#112340

Deuteranopia (green-blind)

#0D203E

Tritanopia (blue-blind)

#07262B

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #191f3f;
/* rgb */ color: rgb(25, 31, 63);
/* oklch */ color: oklch(25.2% 0.061 273.3);

Tailwind

colors: {
  custom: {
    50: '#595a74',
    500: '#191f3f',
    950: '#000000',
  },
}

SCSS

$custom: #191f3f;
$custom-light: #595a74;
$custom-dark: #000000;

JSON

{
  "hex": "#191f3f",
  "rgb": {
    "r": 25,
    "g": 31,
    "b": 63
  },
  "hsl": {
    "h": 230.526,
    "s": 43.182,
    "l": 17.255
  },
  "oklch": {
    "l": 0.25223,
    "c": 0.06079,
    "h": 273.3
  },
  "luminance": 0.01546
}

Semantic roles & 50–950 ramp

primary

#191F3F

secondary

#756C3F

accent

#BF55D3

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040308

muted

#79787B

Preview Lab

Preview with #191F3F

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

Preview Lab → · Contrast checker → · Palette generator →