#172B6A#172B6A

#172B6A is a dark, moderate blue. Relative luminance 0.030; OKLCH L 31.5% C 0.113 H 266.5°. Best body text is #FFFFFF at 13.21:1 contrast (WCAG AA passes).

Color values

HEX	#172B6A
RGB	rgb(23, 43, 106)
HSL	hsl(226, 64%, 25%)
HSV	hsv(226, 78%, 42%)
CMYK	cmyk(78.3%, 59.4%, 0%, 58.4%)
CIE-LAB	lab(19.84, 16.74, -39.15)
CIE-LCH	lch(19.84, 42.58, 293.15°)
OKLab	oklab(31.52% -0.007 -0.1129)
OKLCH	oklch(31.52% 0.113 266.5)
XYZ	xyz(3.8178, 2.9501, 14.0011)
Luminance	0.0295 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172B6A #6A5617

analogous

#17546A #172B6A #2C176A

triadic

#172B6A #6A172B #2B6A17

tetradic

#172B6A #6A1754 #6A5617 #176A2C

square

#172B6A #6A1754 #6A5617 #176A2C

split-complementary

#172B6A #6A2C17 #546A17

monochromatic

#050A19 #0C1738 #172B6A #223F9C #2D54CF

Accessibility & contrast

On white

13.21

#172B6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#172B6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172B6A

13.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172B6A	#FFFFFF	#000000	##FFFFFF
##172B6A	1.00	13.21	1.59	13.21
#FFFFFF	13.21	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00346C

Deuteranopia (green-blind)

#002C69

Tritanopia (blue-blind)

#003B46

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #172b6a;
/* rgb */ color: rgb(23, 43, 106);
/* oklch */ color: oklch(31.5% 0.113 266.5);

Tailwind

colors: {
  custom: {
    50: '#626395',
    500: '#172b6a',
    950: '#000000',
  },
}

SCSS

$custom: #172b6a;
$custom-light: #626395;
$custom-dark: #000000;

JSON

{
  "hex": "#172b6a",
  "rgb": {
    "r": 23,
    "g": 43,
    "b": 106
  },
  "hsl": {
    "h": 225.542,
    "s": 64.341,
    "l": 25.294
  },
  "oklch": {
    "l": 0.31519,
    "c": 0.1131,
    "h": 266.5
  },
  "luminance": 0.02951
}

Semantic roles & 50–950 ramp

primary

#172B6A

secondary

#A0883D

accent

#BF40E7

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#06050D

muted

#7A797E

Preview Lab

Preview with #172B6A

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

Preview Lab → · Contrast checker → · Palette generator →