#172F7D#172F7D

#172F7D is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.1% C 0.136 H 266.1°. Best body text is #FFFFFF at 12.07:1 contrast (WCAG AA passes).

Color values

HEX	#172F7D
RGB	rgb(23, 47, 125)
HSL	hsl(226, 69%, 29%)
HSV	hsv(226, 82%, 49%)
CMYK	cmyk(81.6%, 62.4%, 0%, 51%)
CIE-LAB	lab(22.64, 21.68, -46.78)
CIE-LCH	lch(22.64, 51.56, 294.87°)
OKLab	oklab(34.12% -0.0093 -0.1352)
OKLCH	oklch(34.12% 0.136 266.1)
XYZ	xyz(5.0702, 3.6953, 19.8441)
Luminance	0.0370 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F7D #7D6517

analogous

#17627D #172F7D #32177D

triadic

#172F7D #7D172F #2F7D17

tetradic

#172F7D #7D1762 #7D6517 #177D32

square

#172F7D #7D1762 #7D6517 #177D32

split-complementary

#172F7D #7D3217 #627D17

monochromatic

#050A1A #0D1C49 #172F7D #2142B1 #355BDA

Accessibility & contrast

On white

12.07

#172F7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#172F7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F7D

12.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F7D	#FFFFFF	#000000	##FFFFFF
##172F7D	1.00	12.07	1.74	12.07
#FFFFFF	12.07	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B80

Deuteranopia (green-blind)

#00317C

Tritanopia (blue-blind)

#004351

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #172f7d;
/* rgb */ color: rgb(23, 47, 125);
/* oklch */ color: oklch(34.1% 0.136 266.1);

Tailwind

colors: {
  custom: {
    50: '#6767a3',
    500: '#172f7d',
    950: '#000000',
  },
}

SCSS

$custom: #172f7d;
$custom-light: #6767a3;
$custom-dark: #000000;

JSON

{
  "hex": "#172f7d",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 125
  },
  "hsl": {
    "h": 225.882,
    "s": 68.919,
    "l": 29.02
  },
  "oklch": {
    "l": 0.34124,
    "c": 0.13555,
    "h": 266.1
  },
  "luminance": 0.03696
}

Semantic roles & 50–950 ramp

primary

#172F7D

secondary

#B2973E

accent

#C23CEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #172F7D

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

Preview Lab → · Contrast checker → · Palette generator →