#172A80#172A80

#172A80 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.4% C 0.146 H 267.6°. Best body text is #FFFFFF at 12.50:1 contrast (WCAG AA passes).

Color values

HEX	#172A80
RGB	rgb(23, 42, 128)
HSL	hsl(229, 70%, 30%)
HSV	hsv(229, 82%, 50%)
CMYK	cmyk(82%, 67.2%, 0%, 49.8%)
CIE-LAB	lab(21.56, 26.38, -50.43)
CIE-LCH	lch(21.56, 56.91, 297.61°)
OKLab	oklab(33.42% -0.0062 -0.146)
OKLCH	oklch(33.42% 0.146 267.6)
XYZ	xyz(5.0762, 3.3960, 20.8058)
Luminance	0.0340 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A80 #806D17

analogous

#175F80 #172A80 #391780

triadic

#172A80 #80172A #2A8017

tetradic

#172A80 #80175F #806D17 #178039

square

#172A80 #80175F #806D17 #178039

split-complementary

#172A80 #803917 #5F8017

monochromatic

#05091A #0E194C #172A80 #203BB4 #3654DB

Accessibility & contrast

On white

12.50

#172A80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#172A80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A80

12.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A80	#FFFFFF	#000000	##FFFFFF
##172A80	1.00	12.50	1.68	12.50
#FFFFFF	12.50	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003983

Deuteranopia (green-blind)

#002F7E

Tritanopia (blue-blind)

#004151

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #172a80;
/* rgb */ color: rgb(23, 42, 128);
/* oklch */ color: oklch(33.4% 0.146 267.6);

Tailwind

colors: {
  custom: {
    50: '#6863a6',
    500: '#172a80',
    950: '#000000',
  },
}

SCSS

$custom: #172a80;
$custom-light: #6863a6;
$custom-dark: #000000;

JSON

{
  "hex": "#172a80",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 128
  },
  "hsl": {
    "h": 229.143,
    "s": 69.536,
    "l": 29.608
  },
  "oklch": {
    "l": 0.33417,
    "c": 0.14611,
    "h": 267.6
  },
  "luminance": 0.03397
}

Semantic roles & 50–950 ramp

primary

#172A80

secondary

#B49F3E

accent

#CC3BEC

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#07050F

muted

#7A797F

Preview Lab

Preview with #172A80

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

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