#171F85#171F85

#171F85 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.0% C 0.165 H 269.4°. Best body text is #FFFFFF at 13.37:1 contrast (WCAG AA passes).

Color values

HEX	#171F85
RGB	rgb(23, 31, 133)
HSL	hsl(236, 71%, 31%)
HSV	hsv(236, 83%, 52%)
CMYK	cmyk(82.7%, 76.7%, 0%, 47.8%)
CIE-LAB	lab(19.45, 35.47, -57.06)
CIE-LCH	lch(19.45, 67.19, 301.86°)
OKLab	oklab(32.05% -0.0016 -0.1653)
OKLCH	oklch(32.05% 0.165 269.4)
XYZ	xyz(5.0755, 2.8550, 22.4693)
Luminance	0.0286 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171F85 #857D17

analogous

#175685 #171F85 #461785

triadic

#171F85 #85171F #1F8517

tetradic

#171F85 #851756 #857D17 #178546

square

#171F85 #851756 #857D17 #178546

split-complementary

#171F85 #854617 #568517

monochromatic

#05071D #0E1351 #171F85 #202BB9 #3A45DD

Accessibility & contrast

On white

13.37

#171F85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#171F85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171F85

13.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171F85	#FFFFFF	#000000	##FFFFFF
##171F85	1.00	13.37	1.57	13.37
#FFFFFF	13.37	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003588

Deuteranopia (green-blind)

#002A83

Tritanopia (blue-blind)

#003D50

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #171f85;
/* rgb */ color: rgb(23, 31, 133);
/* oklch */ color: oklch(32.0% 0.165 269.4);

Tailwind

colors: {
  custom: {
    50: '#6a5caa',
    500: '#171f85',
    950: '#000000',
  },
}

SCSS

$custom: #171f85;
$custom-light: #6a5caa;
$custom-dark: #000000;

JSON

{
  "hex": "#171f85",
  "rgb": {
    "r": 23,
    "g": 31,
    "b": 133
  },
  "hsl": {
    "h": 235.636,
    "s": 70.513,
    "l": 30.588
  },
  "oklch": {
    "l": 0.32048,
    "c": 0.16532,
    "h": 269.4
  },
  "luminance": 0.02856
}

Semantic roles & 50–950 ramp

primary

#171F85

secondary

#B9B03F

accent

#E03BED

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #171F85

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

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