#172A8E#172A8E

#172A8E is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.9% C 0.165 H 267.5°. Best body text is #FFFFFF at 11.94:1 contrast (WCAG AA passes).

Color values

HEX	#172A8E
RGB	rgb(23, 42, 142)
HSL	hsl(230, 72%, 32%)
HSV	hsv(230, 84%, 56%)
CMYK	cmyk(83.8%, 70.4%, 0%, 44.3%)
CIE-LAB	lab(22.97, 31.81, -56.89)
CIE-LCH	lch(22.97, 65.18, 299.21°)
OKLab	oklab(34.87% -0.0071 -0.1649)
OKLCH	oklch(34.87% 0.165 267.5)
XYZ	xyz(6.0621, 3.7904, 25.9981)
Luminance	0.0379 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A8E #8E7B17

analogous

#17668E #172A8E #3F178E

triadic

#172A8E #8E172A #2A8E17

tetradic

#172A8E #8E1766 #8E7B17 #178E3F

square

#172A8E #8E1766 #8E7B17 #178E3F

split-complementary

#172A8E #8E3F17 #668E17

monochromatic

#060B25 #0E1A59 #172A8E #203AC3 #3F59E0

Accessibility & contrast

On white

11.94

#172A8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#172A8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A8E

11.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A8E	#FFFFFF	#000000	##FFFFFF
##172A8E	1.00	11.94	1.76	11.94
#FFFFFF	11.94	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D91

Deuteranopia (green-blind)

#00318C

Tritanopia (blue-blind)

#004658

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #172a8e;
/* rgb */ color: rgb(23, 42, 142);
/* oklch */ color: oklch(34.9% 0.165 267.5);

Tailwind

colors: {
  custom: {
    50: '#6c63b0',
    500: '#172a8e',
    950: '#000000',
  },
}

SCSS

$custom: #172a8e;
$custom-light: #6c63b0;
$custom-dark: #000000;

JSON

{
  "hex": "#172a8e",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 142
  },
  "hsl": {
    "h": 230.42,
    "s": 72.121,
    "l": 32.353
  },
  "oklch": {
    "l": 0.34865,
    "c": 0.16501,
    "h": 267.5
  },
  "luminance": 0.03791
}

Semantic roles & 50–950 ramp

primary

#172A8E

secondary

#C0AC40

accent

#D239EF

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#080511

muted

#7B7980

Preview Lab

Preview with #172A8E

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

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