#172C83#172C83

#172C83 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.1% C 0.148 H 267.1°. Best body text is #FFFFFF at 12.18:1 contrast (WCAG AA passes).

Color values

HEX	#172C83
RGB	rgb(23, 44, 131)
HSL	hsl(228, 70%, 30%)
HSV	hsv(228, 82%, 51%)
CMYK	cmyk(82.4%, 66.4%, 0%, 48.6%)
CIE-LAB	lab(22.38, 26.19, -50.98)
CIE-LCH	lch(22.38, 57.32, 297.19°)
OKLab	oklab(34.1% -0.0075 -0.1476)
OKLCH	oklch(34.1% 0.148 267.1)
XYZ	xyz(5.3493, 3.6216, 21.8854)
Luminance	0.0362 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C83 #836E17

analogous

#176283 #172C83 #381783

triadic

#172C83 #83172C #2C8317

tetradic

#172C83 #831762 #836E17 #178338

square

#172C83 #831762 #836E17 #178338

split-complementary

#172C83 #833817 #628317

monochromatic

#05091B #0E1B4F #172C83 #203DB7 #3858DC

Accessibility & contrast

On white

12.18

#172C83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#172C83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C83

12.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C83	#FFFFFF	#000000	##FFFFFF
##172C83	1.00	12.18	1.72	12.18
#FFFFFF	12.18	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B86

Deuteranopia (green-blind)

#003081

Tritanopia (blue-blind)

#004353

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #172c83;
/* rgb */ color: rgb(23, 44, 131);
/* oklch */ color: oklch(34.1% 0.148 267.1);

Tailwind

colors: {
  custom: {
    50: '#6965a8',
    500: '#172c83',
    950: '#000000',
  },
}

SCSS

$custom: #172c83;
$custom-light: #6965a8;
$custom-dark: #000000;

JSON

{
  "hex": "#172c83",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 131
  },
  "hsl": {
    "h": 228.333,
    "s": 70.13,
    "l": 30.196
  },
  "oklch": {
    "l": 0.34104,
    "c": 0.14778,
    "h": 267.1
  },
  "luminance": 0.03622
}

Semantic roles & 50–950 ramp

primary

#172C83

secondary

#B7A03F

accent

#CA3BED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070510

muted

#7A7A7F

Preview Lab

Preview with #172C83

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

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