#172B76#172B76

#172B76 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.6% C 0.131 H 267.1°. Best body text is #FFFFFF at 12.78:1 contrast (WCAG AA passes).

Color values

HEX	#172B76
RGB	rgb(23, 43, 118)
HSL	hsl(227, 67%, 28%)
HSV	hsv(227, 81%, 46%)
CMYK	cmyk(80.5%, 63.6%, 0%, 53.7%)
CIE-LAB	lab(20.89, 21.67, -45.17)
CIE-LCH	lch(20.89, 50.10, 295.63°)
OKLab	oklab(32.63% -0.0066 -0.1306)
OKLCH	oklch(32.63% 0.131 267.1)
XYZ	xyz(4.4861, 3.2174, 17.5206)
Luminance	0.0322 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172B76 #766217

analogous

#175B76 #172B76 #321776

triadic

#172B76 #76172B #2B7617

tetradic

#172B76 #76175B #766217 #177632

square

#172B76 #76175B #766217 #177632

split-complementary

#172B76 #763217 #5B7617

monochromatic

#05091A #0D1843 #172B76 #213EA9 #3154D7

Accessibility & contrast

On white

12.78

#172B76 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#172B76 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172B76

12.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172B76	#FFFFFF	#000000	##FFFFFF
##172B76	1.00	12.78	1.64	12.78
#FFFFFF	12.78	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003778

Deuteranopia (green-blind)

#002E75

Tritanopia (blue-blind)

#003E4C

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #172b76;
/* rgb */ color: rgb(23, 43, 118);
/* oklch */ color: oklch(32.6% 0.131 267.1);

Tailwind

colors: {
  custom: {
    50: '#65649e',
    500: '#172b76',
    950: '#000000',
  },
}

SCSS

$custom: #172b76;
$custom-light: #65649e;
$custom-dark: #000000;

JSON

{
  "hex": "#172b76",
  "rgb": {
    "r": 23,
    "g": 43,
    "b": 118
  },
  "hsl": {
    "h": 227.368,
    "s": 67.376,
    "l": 27.647
  },
  "oklch": {
    "l": 0.32632,
    "c": 0.13074,
    "h": 267.1
  },
  "luminance": 0.03218
}

Semantic roles & 50–950 ramp

primary

#172B76

secondary

#AB943E

accent

#C63EEA

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#06050E

muted

#7A797E

Preview Lab

Preview with #172B76

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

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