#172F80#172F80

#172F80 is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.4% C 0.140 H 266.2°. Best body text is #FFFFFF at 11.97:1 contrast (WCAG AA passes).

Color values

HEX	#172F80
RGB	rgb(23, 47, 128)
HSL	hsl(226, 70%, 30%)
HSV	hsv(226, 82%, 50%)
CMYK	cmyk(82%, 63.3%, 0%, 49.8%)
CIE-LAB	lab(22.91, 22.90, -48.23)
CIE-LCH	lch(22.91, 53.39, 295.39°)
OKLab	oklab(34.41% -0.0092 -0.1395)
OKLCH	oklch(34.41% 0.14 266.2)
XYZ	xyz(5.2648, 3.7731, 20.8687)
Luminance	0.0377 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F80 #806817

analogous

#176380 #172F80 #341780

triadic

#172F80 #80172F #2F8017

tetradic

#172F80 #801763 #806817 #178034

square

#172F80 #801763 #806817 #178034

split-complementary

#172F80 #803417 #638017

monochromatic

#050A1A #0E1C4C #172F80 #2042B4 #365CDB

Accessibility & contrast

On white

11.97

#172F80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#172F80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F80

11.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F80	#FFFFFF	#000000	##FFFFFF
##172F80	1.00	11.97	1.75	11.97
#FFFFFF	11.97	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C83

Deuteranopia (green-blind)

#00327E

Tritanopia (blue-blind)

#004452

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #172f80;
/* rgb */ color: rgb(23, 47, 128);
/* oklch */ color: oklch(34.4% 0.140 266.2);

Tailwind

colors: {
  custom: {
    50: '#6767a6',
    500: '#172f80',
    950: '#000000',
  },
}

SCSS

$custom: #172f80;
$custom-light: #6767a6;
$custom-dark: #000000;

JSON

{
  "hex": "#172f80",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 128
  },
  "hsl": {
    "h": 226.286,
    "s": 69.536,
    "l": 29.608
  },
  "oklch": {
    "l": 0.34408,
    "c": 0.1398,
    "h": 266.2
  },
  "luminance": 0.03774
}

Semantic roles & 50–950 ramp

primary

#172F80

secondary

#B4993E

accent

#C43BEC

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #172F80

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

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