#171F41#171F41

#171F41 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.2% C 0.065 H 271.1°. Best body text is #FFFFFF at 16.05:1 contrast (WCAG AA passes).

Color values

HEX	#171F41
RGB	rgb(23, 31, 65)
HSL	hsl(229, 48%, 17%)
HSV	hsv(229, 65%, 25%)
CMYK	cmyk(64.6%, 52.3%, 0%, 74.5%)
CIE-LAB	lab(12.88, 8.71, -22.78)
CIE-LCH	lch(12.88, 24.39, 290.92°)
OKLab	oklab(25.22% 0.0013 -0.0649)
OKLCH	oklch(25.22% 0.065 271.1)
XYZ	xyz(1.7972, 1.5437, 5.2033)
Luminance	0.0154 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171F41 #413917

analogous

#173441 #171F41 #241741

triadic

#171F41 #41171F #1F4117

tetradic

#171F41 #411734 #413917 #174124

square

#171F41 #411734 #413917 #174124

split-complementary

#171F41 #412417 #344117

monochromatic

#080B17 #080B17 #171F41 #27356E #374A9B

Accessibility & contrast

On white

16.05

#171F41 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#171F41 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171F41

16.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171F41	#FFFFFF	#000000	##FFFFFF
##171F41	1.00	16.05	1.31	16.05
#FFFFFF	16.05	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F2342

Deuteranopia (green-blind)

#0A2040

Tritanopia (blue-blind)

#01272C

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #171f41;
/* rgb */ color: rgb(23, 31, 65);
/* oklch */ color: oklch(25.2% 0.065 271.1);

Tailwind

colors: {
  custom: {
    50: '#585a76',
    500: '#171f41',
    950: '#000000',
  },
}

SCSS

$custom: #171f41;
$custom-light: #585a76;
$custom-dark: #000000;

JSON

{
  "hex": "#171f41",
  "rgb": {
    "r": 23,
    "g": 31,
    "b": 65
  },
  "hsl": {
    "h": 228.571,
    "s": 47.727,
    "l": 17.255
  },
  "oklch": {
    "l": 0.2522,
    "c": 0.06495,
    "h": 271.1
  },
  "luminance": 0.01544
}

Semantic roles & 50–950 ramp

primary

#171F41

secondary

#786C3C

accent

#BE50D7

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #171F41

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

Preview Lab → · Contrast checker → · Palette generator →