#171F60#171F60

#171F60 is a dark, moderate blue. Relative luminance 0.020; OKLCH L 28.0% C 0.114 H 271.4°. Best body text is #FFFFFF at 14.99:1 contrast (WCAG AA passes).

Color values

HEX	#171F60
RGB	rgb(23, 31, 96)
HSL	hsl(233, 61%, 23%)
HSV	hsv(233, 76%, 38%)
CMYK	cmyk(76%, 67.7%, 0%, 62.4%)
CIE-LAB	lab(15.52, 21.34, -39.63)
CIE-LCH	lch(15.52, 45.01, 298.30°)
OKLab	oklab(28.02% 0.0027 -0.1145)
OKLCH	oklch(28.02% 0.114 271.4)
XYZ	xyz(2.9539, 2.0064, 11.2957)
Luminance	0.0201 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171F60 #605817

analogous

#174360 #171F60 #331760

triadic

#171F60 #60171F #1F6017

tetradic

#171F60 #601743 #605817 #176033

square

#171F60 #601743 #605817 #176033

split-complementary

#171F60 #603317 #436017

monochromatic

#060819 #0B0F2F #171F60 #232F91 #2F3FC3

Accessibility & contrast

On white

14.99

#171F60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#171F60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171F60

14.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171F60	#FFFFFF	#000000	##FFFFFF
##171F60	1.00	14.99	1.40	14.99
#FFFFFF	14.99	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	14.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A62

Deuteranopia (green-blind)

#00235F

Tritanopia (blue-blind)

#00303C

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #171f60;
/* rgb */ color: rgb(23, 31, 96);
/* oklch */ color: oklch(28.0% 0.114 271.4);

Tailwind

colors: {
  custom: {
    50: '#605a8e',
    500: '#171f60',
    950: '#000000',
  },
}

SCSS

$custom: #171f60;
$custom-light: #605a8e;
$custom-dark: #000000;

JSON

{
  "hex": "#171f60",
  "rgb": {
    "r": 23,
    "g": 31,
    "b": 96
  },
  "hsl": {
    "h": 233.425,
    "s": 61.345,
    "l": 23.333
  },
  "oklch": {
    "l": 0.28024,
    "c": 0.11449,
    "h": 271.4
  },
  "luminance": 0.02007
}

Semantic roles & 50–950 ramp

primary

#171F60

secondary

#978D3C

accent

#D343E4

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#05040C

muted

#7A797D

Preview Lab

Preview with #171F60

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

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