#172B6B#172B6B

#172B6B is a dark, moderate blue. Relative luminance 0.030; OKLCH L 31.6% C 0.115 H 266.5°. Best body text is #FFFFFF at 13.17:1 contrast (WCAG AA passes).

Color values

HEX	#172B6B
RGB	rgb(23, 43, 107)
HSL	hsl(226, 65%, 25%)
HSV	hsv(226, 79%, 42%)
CMYK	cmyk(78.5%, 59.8%, 0%, 58%)
CIE-LAB	lab(19.93, 17.15, -39.66)
CIE-LCH	lch(19.93, 43.21, 293.39°)
OKLab	oklab(31.61% -0.0069 -0.1144)
OKLCH	oklch(31.61% 0.115 266.5)
XYZ	xyz(3.8701, 2.9710, 14.2766)
Luminance	0.0297 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172B6B #6B5717

analogous

#17556B #172B6B #2D176B

triadic

#172B6B #6B172B #2B6B17

tetradic

#172B6B #6B1755 #6B5717 #176B2D

square

#172B6B #6B1755 #6B5717 #176B2D

split-complementary

#172B6B #6B2D17 #556B17

monochromatic

#050A19 #0C1739 #172B6B #223F9D #2D53D0

Accessibility & contrast

On white

13.17

#172B6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#172B6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172B6B

13.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172B6B	#FFFFFF	#000000	##FFFFFF
##172B6B	1.00	13.17	1.59	13.17
#FFFFFF	13.17	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00346D

Deuteranopia (green-blind)

#002C6A

Tritanopia (blue-blind)

#003B46

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #172b6b;
/* rgb */ color: rgb(23, 43, 107);
/* oklch */ color: oklch(31.6% 0.115 266.5);

Tailwind

colors: {
  custom: {
    50: '#626396',
    500: '#172b6b',
    950: '#000000',
  },
}

SCSS

$custom: #172b6b;
$custom-light: #626396;
$custom-dark: #000000;

JSON

{
  "hex": "#172b6b",
  "rgb": {
    "r": 23,
    "g": 43,
    "b": 107
  },
  "hsl": {
    "h": 225.714,
    "s": 64.615,
    "l": 25.49
  },
  "oklch": {
    "l": 0.31609,
    "c": 0.11461,
    "h": 266.5
  },
  "luminance": 0.02971
}

Semantic roles & 50–950 ramp

primary

#172B6B

secondary

#A1893D

accent

#C040E8

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#06050D

muted

#7A797E

Preview Lab

Preview with #172B6B

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

Preview Lab → · Contrast checker → · Palette generator →