#172A85#172A85

#172A85 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.9% C 0.153 H 267.6°. Best body text is #FFFFFF at 12.31:1 contrast (WCAG AA passes).

Color values

HEX	#172A85
RGB	rgb(23, 42, 133)
HSL	hsl(230, 71%, 31%)
HSV	hsv(230, 83%, 52%)
CMYK	cmyk(82.7%, 68.4%, 0%, 47.8%)
CIE-LAB	lab(22.06, 28.34, -52.77)
CIE-LCH	lch(22.06, 59.90, 298.24°)
OKLab	oklab(33.93% -0.0065 -0.1528)
OKLCH	oklch(33.93% 0.153 267.6)
XYZ	xyz(5.4135, 3.5309, 22.5820)
Luminance	0.0353 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A85 #857217

analogous

#176185 #172A85 #3B1785

triadic

#172A85 #85172A #2A8517

tetradic

#172A85 #851761 #857217 #17853B

square

#172A85 #851761 #857217 #17853B

split-complementary

#172A85 #853B17 #618517

monochromatic

#05091D #0E1A51 #172A85 #203AB9 #3A56DD

Accessibility & contrast

On white

12.31

#172A85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#172A85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A85

12.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A85	#FFFFFF	#000000	##FFFFFF
##172A85	1.00	12.31	1.71	12.31
#FFFFFF	12.31	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A88

Deuteranopia (green-blind)

#003083

Tritanopia (blue-blind)

#004353

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #172a85;
/* rgb */ color: rgb(23, 42, 133);
/* oklch */ color: oklch(33.9% 0.153 267.6);

Tailwind

colors: {
  custom: {
    50: '#6963a9',
    500: '#172a85',
    950: '#000000',
  },
}

SCSS

$custom: #172a85;
$custom-light: #6963a9;
$custom-dark: #000000;

JSON

{
  "hex": "#172a85",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 133
  },
  "hsl": {
    "h": 229.636,
    "s": 70.513,
    "l": 30.588
  },
  "oklch": {
    "l": 0.33926,
    "c": 0.15297,
    "h": 267.6
  },
  "luminance": 0.03532
}

Semantic roles & 50–950 ramp

primary

#172A85

secondary

#B9A43F

accent

#CE3BED

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#070510

muted

#7A797F

Preview Lab

Preview with #172A85

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

Preview Lab → · Contrast checker → · Palette generator →