#172A64#172A64

#172A64 is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.8% C 0.105 H 266.5°. Best body text is #FFFFFF at 13.53:1 contrast (WCAG AA passes).

Color values

HEX	#172A64
RGB	rgb(23, 42, 100)
HSL	hsl(225, 63%, 24%)
HSV	hsv(225, 77%, 39%)
CMYK	cmyk(77%, 58%, 0%, 60.8%)
CIE-LAB	lab(19.05, 14.98, -36.53)
CIE-LCH	lch(19.05, 39.48, 292.30°)
OKLab	oklab(30.76% -0.0065 -0.1052)
OKLCH	oklch(30.76% 0.105 266.5)
XYZ	xyz(3.4808, 2.7578, 12.4030)
Luminance	0.0276 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A64 #645117

analogous

#175164 #172A64 #2B1764

triadic

#172A64 #64172A #2A6417

tetradic

#172A64 #641751 #645117 #17642B

square

#172A64 #641751 #645117 #17642B

split-complementary

#172A64 #642B17 #516417

monochromatic

#060A19 #0C1532 #172A64 #223F96 #2E54C8

Accessibility & contrast

On white

13.53

#172A64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#172A64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A64

13.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A64	#FFFFFF	#000000	##FFFFFF
##172A64	1.00	13.53	1.55	13.53
#FFFFFF	13.53	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003266

Deuteranopia (green-blind)

#002B63

Tritanopia (blue-blind)

#003842

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #172a64;
/* rgb */ color: rgb(23, 42, 100);
/* oklch */ color: oklch(30.8% 0.105 266.5);

Tailwind

colors: {
  custom: {
    50: '#606391',
    500: '#172a64',
    950: '#000000',
  },
}

SCSS

$custom: #172a64;
$custom-light: #606391;
$custom-dark: #000000;

JSON

{
  "hex": "#172a64",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 100
  },
  "hsl": {
    "h": 225.195,
    "s": 62.602,
    "l": 24.118
  },
  "oklch": {
    "l": 0.30762,
    "c": 0.10539,
    "h": 266.5
  },
  "luminance": 0.02758
}

Semantic roles & 50–950 ramp

primary

#172A64

secondary

#9A833C

accent

#BD42E6

background

#F6F5F8

surface

#EBEAF0

border

#C6C6CB

text

#05050D

muted

#7A797D

Preview Lab

Preview with #172A64

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

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