#172E8D#172E8D

#172E8D is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.5% C 0.159 H 266.8°. Best body text is #FFFFFF at 11.59:1 contrast (WCAG AA passes).

Color values

HEX	#172E8D
RGB	rgb(23, 46, 141)
HSL	hsl(228, 72%, 32%)
HSV	hsv(228, 84%, 55%)
CMYK	cmyk(83.7%, 67.4%, 0%, 44.7%)
CIE-LAB	lab(23.86, 28.76, -54.80)
CIE-LCH	lch(23.86, 61.88, 297.69°)
OKLab	oklab(35.49% -0.0089 -0.1587)
OKLCH	oklch(35.49% 0.159 266.8)
XYZ	xyz(6.1364, 4.0585, 25.6541)
Luminance	0.0406 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172E8D #8D7617

analogous

#17698D #172E8D #3B178D

triadic

#172E8D #8D172E #2E8D17

tetradic

#172E8D #8D1769 #8D7617 #178D3B

square

#172E8D #8D1769 #8D7617 #178D3B

split-complementary

#172E8D #8D3B17 #698D17

monochromatic

#060C24 #0E1D58 #172E8D #203FC2 #3F5EE0

Accessibility & contrast

On white

11.59

#172E8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#172E8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172E8D

11.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172E8D	#FFFFFF	#000000	##FFFFFF
##172E8D	1.00	11.59	1.81	11.59
#FFFFFF	11.59	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E90

Deuteranopia (green-blind)

#00338B

Tritanopia (blue-blind)

#004859

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #172e8d;
/* rgb */ color: rgb(23, 46, 141);
/* oklch */ color: oklch(35.5% 0.159 266.8);

Tailwind

colors: {
  custom: {
    50: '#6b66af',
    500: '#172e8d',
    950: '#000000',
  },
}

SCSS

$custom: #172e8d;
$custom-light: #6b66af;
$custom-dark: #000000;

JSON

{
  "hex": "#172e8d",
  "rgb": {
    "r": 23,
    "g": 46,
    "b": 141
  },
  "hsl": {
    "h": 228.305,
    "s": 71.951,
    "l": 32.157
  },
  "oklch": {
    "l": 0.3549,
    "c": 0.15896,
    "h": 266.8
  },
  "luminance": 0.04059
}

Semantic roles & 50–950 ramp

primary

#172E8D

secondary

#C0A740

accent

#CB39EF

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #172E8D

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

Preview Lab → · Contrast checker → · Palette generator →