#172D58#172D58

#172D58 is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.5% C 0.082 H 262.3°. Best body text is #FFFFFF at 13.52:1 contrast (WCAG AA passes).

Color values

HEX	#172D58
RGB	rgb(23, 45, 88)
HSL	hsl(220, 59%, 22%)
HSV	hsv(220, 74%, 35%)
CMYK	cmyk(73.9%, 48.9%, 0%, 65.5%)
CIE-LAB	lab(19.07, 7.77, -28.56)
CIE-LCH	lch(19.07, 29.60, 285.22°)
OKLab	oklab(30.49% -0.0111 -0.0817)
OKLCH	oklch(30.49% 0.082 262.3)
XYZ	xyz(3.0526, 2.7632, 9.6031)
Luminance	0.0276 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172D58 #584217

analogous

#174E58 #172D58 #211758

triadic

#172D58 #58172D #2D5817

tetradic

#172D58 #58174E #584217 #175821

square

#172D58 #58174E #584217 #175821

split-complementary

#172D58 #582117 #4E5817

monochromatic

#060C18 #0A1427 #172D58 #244689 #305FB9

Accessibility & contrast

On white

13.52

#172D58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#172D58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D58

13.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172D58	#FFFFFF	#000000	##FFFFFF
##172D58	1.00	13.52	1.55	13.52
#FFFFFF	13.52	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#18315A

Deuteranopia (green-blind)

#0B2C57

Tritanopia (blue-blind)

#00373E

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #172d58;
/* rgb */ color: rgb(23, 45, 88);
/* oklch */ color: oklch(30.5% 0.082 262.3);

Tailwind

colors: {
  custom: {
    50: '#5d6587',
    500: '#172d58',
    950: '#000000',
  },
}

SCSS

$custom: #172d58;
$custom-light: #5d6587;
$custom-dark: #000000;

JSON

{
  "hex": "#172d58",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 88
  },
  "hsl": {
    "h": 219.692,
    "s": 58.559,
    "l": 21.765
  },
  "oklch": {
    "l": 0.30488,
    "c": 0.08246,
    "h": 262.3
  },
  "luminance": 0.02764
}

Semantic roles & 50–950 ramp

primary

#172D58

secondary

#8F733C

accent

#AD46E2

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#05050B

muted

#797A7C

Preview Lab

Preview with #172D58

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

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