#172E83#172E83

#172E83 is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.5% C 0.145 H 266.6°. Best body text is #FFFFFF at 11.97:1 contrast (WCAG AA passes).

Color values

HEX	#172E83
RGB	rgb(23, 46, 131)
HSL	hsl(227, 70%, 30%)
HSV	hsv(227, 82%, 51%)
CMYK	cmyk(82.4%, 64.9%, 0%, 48.6%)
CIE-LAB	lab(22.91, 24.80, -50.11)
CIE-LCH	lch(22.91, 55.91, 296.33°)
OKLab	oklab(34.5% -0.0086 -0.145)
OKLCH	oklch(34.5% 0.145 266.6)
XYZ	xyz(5.4256, 3.7742, 21.9109)
Luminance	0.0377 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172E83 #836C17

analogous

#176483 #172E83 #361783

triadic

#172E83 #83172E #2E8317

tetradic

#172E83 #831764 #836C17 #178336

square

#172E83 #831764 #836C17 #178336

split-complementary

#172E83 #833617 #648317

monochromatic

#05091B #0E1C4F #172E83 #2040B7 #385BDC

Accessibility & contrast

On white

11.97

#172E83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#172E83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172E83

11.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172E83	#FFFFFF	#000000	##FFFFFF
##172E83	1.00	11.97	1.76	11.97
#FFFFFF	11.97	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C86

Deuteranopia (green-blind)

#003281

Tritanopia (blue-blind)

#004454

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #172e83;
/* rgb */ color: rgb(23, 46, 131);
/* oklch */ color: oklch(34.5% 0.145 266.6);

Tailwind

colors: {
  custom: {
    50: '#6866a8',
    500: '#172e83',
    950: '#000000',
  },
}

SCSS

$custom: #172e83;
$custom-light: #6866a8;
$custom-dark: #000000;

JSON

{
  "hex": "#172e83",
  "rgb": {
    "r": 23,
    "g": 46,
    "b": 131
  },
  "hsl": {
    "h": 227.222,
    "s": 70.13,
    "l": 30.196
  },
  "oklch": {
    "l": 0.34496,
    "c": 0.14528,
    "h": 266.6
  },
  "luminance": 0.03775
}

Semantic roles & 50–950 ramp

primary

#172E83

secondary

#B79E3F

accent

#C73BED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #172E83

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

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