#172E80#172E80

#172E80 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.2% C 0.141 H 266.5°. Best body text is #FFFFFF at 12.08:1 contrast (WCAG AA passes).

Color values

HEX	#172E80
RGB	rgb(23, 46, 128)
HSL	hsl(227, 70%, 30%)
HSV	hsv(227, 82%, 50%)
CMYK	cmyk(82%, 64.1%, 0%, 49.8%)
CIE-LAB	lab(22.63, 23.60, -48.68)
CIE-LCH	lch(22.63, 54.10, 295.86°)
OKLab	oklab(34.21% -0.0086 -0.1408)
OKLCH	oklch(34.21% 0.141 266.5)
XYZ	xyz(5.2253, 3.6941, 20.8555)
Luminance	0.0369 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172E80 #806917

analogous

#176380 #172E80 #351780

triadic

#172E80 #80172E #2E8017

tetradic

#172E80 #801763 #806917 #178035

square

#172E80 #801763 #806917 #178035

split-complementary

#172E80 #803517 #638017

monochromatic

#05091A #0E1B4C #172E80 #2041B4 #365ADB

Accessibility & contrast

On white

12.08

#172E80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#172E80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172E80

12.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172E80	#FFFFFF	#000000	##FFFFFF
##172E80	1.00	12.08	1.74	12.08
#FFFFFF	12.08	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B83

Deuteranopia (green-blind)

#00317E

Tritanopia (blue-blind)

#004352

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #172e80;
/* rgb */ color: rgb(23, 46, 128);
/* oklch */ color: oklch(34.2% 0.141 266.5);

Tailwind

colors: {
  custom: {
    50: '#6866a6',
    500: '#172e80',
    950: '#000000',
  },
}

SCSS

$custom: #172e80;
$custom-light: #6866a6;
$custom-dark: #000000;

JSON

{
  "hex": "#172e80",
  "rgb": {
    "r": 23,
    "g": 46,
    "b": 128
  },
  "hsl": {
    "h": 226.857,
    "s": 69.536,
    "l": 29.608
  },
  "oklch": {
    "l": 0.34205,
    "c": 0.14108,
    "h": 266.5
  },
  "luminance": 0.03695
}

Semantic roles & 50–950 ramp

primary

#172E80

secondary

#B49B3E

accent

#C63BEC

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #172E80

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

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