#172F7E#172F7E

#172F7E is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.2% C 0.137 H 266.1°. Best body text is #FFFFFF at 12.04:1 contrast (WCAG AA passes).

Color values

HEX	#172F7E
RGB	rgb(23, 47, 126)
HSL	hsl(226, 69%, 29%)
HSV	hsv(226, 82%, 49%)
CMYK	cmyk(81.7%, 62.7%, 0%, 50.6%)
CIE-LAB	lab(22.73, 22.09, -47.26)
CIE-LCH	lch(22.73, 52.17, 295.05°)
OKLab	oklab(34.22% -0.0092 -0.1366)
OKLCH	oklch(34.22% 0.137 266.1)
XYZ	xyz(5.1344, 3.7210, 20.1822)
Luminance	0.0372 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F7E #7E6617

analogous

#17637E #172F7E #32177E

triadic

#172F7E #7E172F #2F7E17

tetradic

#172F7E #7E1763 #7E6617 #177E32

square

#172F7E #7E1763 #7E6617 #177E32

split-complementary

#172F7E #7E3217 #637E17

monochromatic

#050A1A #0E1C4A #172F7E #2042B2 #355CDA

Accessibility & contrast

On white

12.04

#172F7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#172F7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F7E

12.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F7E	#FFFFFF	#000000	##FFFFFF
##172F7E	1.00	12.04	1.74	12.04
#FFFFFF	12.04	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B81

Deuteranopia (green-blind)

#00327C

Tritanopia (blue-blind)

#004351

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #172f7e;
/* rgb */ color: rgb(23, 47, 126);
/* oklch */ color: oklch(34.2% 0.137 266.1);

Tailwind

colors: {
  custom: {
    50: '#6767a4',
    500: '#172f7e',
    950: '#000000',
  },
}

SCSS

$custom: #172f7e;
$custom-light: #6767a4;
$custom-dark: #000000;

JSON

{
  "hex": "#172f7e",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 126
  },
  "hsl": {
    "h": 226.019,
    "s": 69.128,
    "l": 29.216
  },
  "oklch": {
    "l": 0.34218,
    "c": 0.13696,
    "h": 266.1
  },
  "luminance": 0.03722
}

Semantic roles & 50–950 ramp

primary

#172F7E

secondary

#B3983E

accent

#C33CEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #172F7E

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

Preview Lab → · Contrast checker → · Palette generator →