#172855#172855

#172855 is a dark, moderate blue. Relative luminance 0.024; OKLCH L 29.0% C 0.085 H 265.8°. Best body text is #FFFFFF at 14.27:1 contrast (WCAG AA passes).

Color values

HEX	#172855
RGB	rgb(23, 40, 85)
HSL	hsl(224, 57%, 21%)
HSV	hsv(224, 73%, 33%)
CMYK	cmyk(72.9%, 52.9%, 0%, 66.7%)
CIE-LAB	lab(17.25, 10.20, -29.47)
CIE-LCH	lch(17.25, 31.19, 289.08°)
OKLab	oklab(29.03% -0.0062 -0.0845)
OKLCH	oklch(29.03% 0.085 265.8)
XYZ	xyz(2.7513, 2.3554, 8.9022)
Luminance	0.0236 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172855 #554417

analogous

#174755 #172855 #251755

triadic

#172855 #551728 #285517

tetradic

#172855 #551747 #554417 #175525

square

#172855 #551747 #554417 #175525

split-complementary

#172855 #552517 #475517

monochromatic

#070B18 #0A1125 #172855 #243F85 #3155B5

Accessibility & contrast

On white

14.27

#172855 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#172855 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172855

14.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172855	#FFFFFF	#000000	##FFFFFF
##172855	1.00	14.27	1.47	14.27
#FFFFFF	14.27	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#102D57

Deuteranopia (green-blind)

#022854

Tritanopia (blue-blind)

#00323A

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #172855;
/* rgb */ color: rgb(23, 40, 85);
/* oklch */ color: oklch(29.0% 0.085 265.8);

Tailwind

colors: {
  custom: {
    50: '#5c6185',
    500: '#172855',
    950: '#000000',
  },
}

SCSS

$custom: #172855;
$custom-light: #5c6185;
$custom-dark: #000000;

JSON

{
  "hex": "#172855",
  "rgb": {
    "r": 23,
    "g": 40,
    "b": 85
  },
  "hsl": {
    "h": 223.548,
    "s": 57.407,
    "l": 21.176
  },
  "oklch": {
    "l": 0.29026,
    "c": 0.08471,
    "h": 265.8
  },
  "luminance": 0.02356
}

Semantic roles & 50–950 ramp

primary

#172855

secondary

#8C763C

accent

#B747E1

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04050B

muted

#79797C

Preview Lab

Preview with #172855

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

Preview Lab → · Contrast checker → · Palette generator →