#172A5E#172A5E

#172A5E is a dark, moderate blue. Relative luminance 0.026; OKLCH L 30.2% C 0.096 H 265.8°. Best body text is #FFFFFF at 13.73:1 contrast (WCAG AA passes).

Color values

HEX	#172A5E
RGB	rgb(23, 42, 94)
HSL	hsl(224, 61%, 23%)
HSV	hsv(224, 76%, 37%)
CMYK	cmyk(75.5%, 55.3%, 0%, 63.1%)
CIE-LAB	lab(18.57, 12.48, -33.35)
CIE-LCH	lch(18.57, 35.61, 290.51°)
OKLab	oklab(30.25% -0.0071 -0.0959)
OKLCH	oklch(30.25% 0.096 265.8)
XYZ	xyz(3.2010, 2.6459, 10.9295)
Luminance	0.0265 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A5E #5E4B17

analogous

#174D5E #172A5E #28175E

triadic

#172A5E #5E172A #2A5E17

tetradic

#172A5E #5E174D #5E4B17 #175E28

square

#172A5E #5E174D #5E4B17 #175E28

split-complementary

#172A5E #5E2817 #4D5E17

monochromatic

#060B19 #0B142D #172A5E #23408F #2F56C0

Accessibility & contrast

On white

13.73

#172A5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#172A5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A5E

13.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A5E	#FFFFFF	#000000	##FFFFFF
##172A5E	1.00	13.73	1.53	13.73
#FFFFFF	13.73	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#093160

Deuteranopia (green-blind)

#002A5D

Tritanopia (blue-blind)

#00363F

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #172a5e;
/* rgb */ color: rgb(23, 42, 94);
/* oklch */ color: oklch(30.2% 0.096 265.8);

Tailwind

colors: {
  custom: {
    50: '#5f638c',
    500: '#172a5e',
    950: '#000000',
  },
}

SCSS

$custom: #172a5e;
$custom-light: #5f638c;
$custom-dark: #000000;

JSON

{
  "hex": "#172a5e",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 94
  },
  "hsl": {
    "h": 223.944,
    "s": 60.684,
    "l": 22.941
  },
  "oklch": {
    "l": 0.30246,
    "c": 0.09612,
    "h": 265.8
  },
  "luminance": 0.02646
}

Semantic roles & 50–950 ramp

primary

#172A5E

secondary

#957D3C

accent

#B944E4

background

#F5F5F8

surface

#EAEAF0

border

#C6C6CB

text

#05050C

muted

#79797D

Preview Lab

Preview with #172A5E

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

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