#172B84#172B84

#172B84 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.0% C 0.150 H 267.4°. Best body text is #FFFFFF at 12.24:1 contrast (WCAG AA passes).

Color values

HEX	#172B84
RGB	rgb(23, 43, 132)
HSL	hsl(229, 70%, 30%)
HSV	hsv(229, 83%, 52%)
CMYK	cmyk(82.6%, 67.4%, 0%, 48.2%)
CIE-LAB	lab(22.21, 27.27, -51.88)
CIE-LCH	lch(22.21, 58.61, 297.73°)
OKLab	oklab(34.01% -0.0069 -0.1502)
OKLCH	oklch(34.01% 0.15 267.4)
XYZ	xyz(5.3806, 3.5752, 22.2318)
Luminance	0.0358 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172B84 #847017

analogous

#176184 #172B84 #391784

triadic

#172B84 #84172B #2B8417

tetradic

#172B84 #841761 #847017 #178439

square

#172B84 #841761 #847017 #178439

split-complementary

#172B84 #843917 #618417

monochromatic

#05091C #0E1A50 #172B84 #203CB8 #3957DC

Accessibility & contrast

On white

12.24

#172B84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#172B84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172B84

12.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172B84	#FFFFFF	#000000	##FFFFFF
##172B84	1.00	12.24	1.72	12.24
#FFFFFF	12.24	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A87

Deuteranopia (green-blind)

#003082

Tritanopia (blue-blind)

#004353

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #172b84;
/* rgb */ color: rgb(23, 43, 132);
/* oklch */ color: oklch(34.0% 0.150 267.4);

Tailwind

colors: {
  custom: {
    50: '#6964a9',
    500: '#172b84',
    950: '#000000',
  },
}

SCSS

$custom: #172b84;
$custom-light: #6964a9;
$custom-dark: #000000;

JSON

{
  "hex": "#172b84",
  "rgb": {
    "r": 23,
    "g": 43,
    "b": 132
  },
  "hsl": {
    "h": 228.991,
    "s": 70.323,
    "l": 30.392
  },
  "oklch": {
    "l": 0.34012,
    "c": 0.15039,
    "h": 267.4
  },
  "luminance": 0.03576
}

Semantic roles & 50–950 ramp

primary

#172B84

secondary

#B8A23F

accent

#CC3BED

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#070510

muted

#7A797F

Preview Lab

Preview with #172B84

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

Preview Lab → · Contrast checker → · Palette generator →