#172F6A#172F6A

#172F6A is a dark, moderate blue. Relative luminance 0.033; OKLCH L 32.4% C 0.108 H 264.5°. Best body text is #FFFFFF at 12.72:1 contrast (WCAG AA passes).

Color values

HEX	#172F6A
RGB	rgb(23, 47, 106)
HSL	hsl(223, 64%, 25%)
HSV	hsv(223, 78%, 42%)
CMYK	cmyk(78.3%, 55.7%, 0%, 58.4%)
CIE-LAB	lab(21.04, 13.84, -37.21)
CIE-LCH	lch(21.04, 39.70, 290.40°)
OKLab	oklab(32.42% -0.0104 -0.1071)
OKLCH	oklch(32.42% 0.108 264.5)
XYZ	xyz(3.9705, 3.2554, 14.0520)
Luminance	0.0326 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F6A #6A5217

analogous

#17586A #172F6A #29176A

triadic

#172F6A #6A172F #2F6A17

tetradic

#172F6A #6A1758 #6A5217 #176A29

square

#172F6A #6A1758 #6A5217 #176A29

split-complementary

#172F6A #6A2917 #586A17

monochromatic

#050B19 #0C1938 #172F6A #22459C #2D5CCF

Accessibility & contrast

On white

12.72

#172F6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#172F6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F6A

12.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F6A	#FFFFFF	#000000	##FFFFFF
##172F6A	1.00	12.72	1.65	12.72
#FFFFFF	12.72	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#06376C

Deuteranopia (green-blind)

#002F69

Tritanopia (blue-blind)

#003D47

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #172f6a;
/* rgb */ color: rgb(23, 47, 106);
/* oklch */ color: oklch(32.4% 0.108 264.5);

Tailwind

colors: {
  custom: {
    50: '#616795',
    500: '#172f6a',
    950: '#000000',
  },
}

SCSS

$custom: #172f6a;
$custom-light: #616795;
$custom-dark: #000000;

JSON

{
  "hex": "#172f6a",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 106
  },
  "hsl": {
    "h": 222.651,
    "s": 64.341,
    "l": 25.294
  },
  "oklch": {
    "l": 0.32421,
    "c": 0.10761,
    "h": 264.5
  },
  "luminance": 0.03256
}

Semantic roles & 50–950 ramp

primary

#172F6A

secondary

#A0833D

accent

#B740E7

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #172F6A

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

Preview Lab → · Contrast checker → · Palette generator →