#172C85#172C85

#172C85 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.3% C 0.151 H 267.1°. Best body text is #FFFFFF at 12.10:1 contrast (WCAG AA passes).

Color values

HEX	#172C85
RGB	rgb(23, 44, 133)
HSL	hsl(229, 71%, 31%)
HSV	hsv(229, 83%, 52%)
CMYK	cmyk(82.7%, 66.9%, 0%, 47.8%)
CIE-LAB	lab(22.57, 26.98, -51.93)
CIE-LCH	lch(22.57, 58.52, 297.45°)
OKLab	oklab(34.3% -0.0075 -0.1503)
OKLCH	oklch(34.3% 0.151 267.1)
XYZ	xyz(5.4862, 3.6763, 22.6062)
Luminance	0.0368 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C85 #857017

analogous

#176385 #172C85 #391785

triadic

#172C85 #85172C #2C8517

tetradic

#172C85 #851763 #857017 #178539

square

#172C85 #851763 #857017 #178539

split-complementary

#172C85 #853917 #638517

monochromatic

#05091D #0E1B51 #172C85 #203DB9 #3A59DD

Accessibility & contrast

On white

12.10

#172C85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#172C85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C85

12.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C85	#FFFFFF	#000000	##FFFFFF
##172C85	1.00	12.10	1.74	12.10
#FFFFFF	12.10	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B88

Deuteranopia (green-blind)

#003183

Tritanopia (blue-blind)

#004454

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #172c85;
/* rgb */ color: rgb(23, 44, 133);
/* oklch */ color: oklch(34.3% 0.151 267.1);

Tailwind

colors: {
  custom: {
    50: '#6965a9',
    500: '#172c85',
    950: '#000000',
  },
}

SCSS

$custom: #172c85;
$custom-light: #6965a9;
$custom-dark: #000000;

JSON

{
  "hex": "#172c85",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 133
  },
  "hsl": {
    "h": 228.545,
    "s": 70.513,
    "l": 30.588
  },
  "oklch": {
    "l": 0.34304,
    "c": 0.15053,
    "h": 267.1
  },
  "luminance": 0.03677
}

Semantic roles & 50–950 ramp

primary

#172C85

secondary

#B9A23F

accent

#CB3BED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070510

muted

#7A7A7F

Preview Lab

Preview with #172C85

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

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