#172E7C#172E7C

#172E7C is a dark, vivid blue. Relative luminance 0.036; OKLCH L 33.8% C 0.135 H 266.4°. Best body text is #FFFFFF at 12.22:1 contrast (WCAG AA passes).

Color values

HEX	#172E7C
RGB	rgb(23, 46, 124)
HSL	hsl(226, 69%, 29%)
HSV	hsv(226, 81%, 49%)
CMYK	cmyk(81.5%, 62.9%, 0%, 51.4%)
CIE-LAB	lab(22.27, 21.98, -46.74)
CIE-LCH	lch(22.27, 51.65, 295.18°)
OKLab	oklab(33.82% -0.0086 -0.1351)
OKLCH	oklch(33.82% 0.135 266.4)
XYZ	xyz(4.9672, 3.5908, 19.4962)
Luminance	0.0359 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172E7C #7C6517

analogous

#17617C #172E7C #33177C

triadic

#172E7C #7C172E #2E7C17

tetradic

#172E7C #7C1761 #7C6517 #177C33

square

#172E7C #7C1761 #7C6517 #177C33

split-complementary

#172E7C #7C3317 #617C17

monochromatic

#050A1A #0D1B48 #172E7C #2141B0 #345AD9

Accessibility & contrast

On white

12.22

#172E7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#172E7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172E7C

12.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172E7C	#FFFFFF	#000000	##FFFFFF
##172E7C	1.00	12.22	1.72	12.22
#FFFFFF	12.22	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A7F

Deuteranopia (green-blind)

#00317B

Tritanopia (blue-blind)

#004250

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #172e7c;
/* rgb */ color: rgb(23, 46, 124);
/* oklch */ color: oklch(33.8% 0.135 266.4);

Tailwind

colors: {
  custom: {
    50: '#6666a3',
    500: '#172e7c',
    950: '#000000',
  },
}

SCSS

$custom: #172e7c;
$custom-light: #6666a3;
$custom-dark: #000000;

JSON

{
  "hex": "#172e7c",
  "rgb": {
    "r": 23,
    "g": 46,
    "b": 124
  },
  "hsl": {
    "h": 226.337,
    "s": 68.707,
    "l": 28.824
  },
  "oklch": {
    "l": 0.33823,
    "c": 0.13541,
    "h": 266.4
  },
  "luminance": 0.03591
}

Semantic roles & 50–950 ramp

primary

#172E7C

secondary

#B1973E

accent

#C43CEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07050F

muted

#7A7A7F

Preview Lab

Preview with #172E7C

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

Preview Lab → · Contrast checker → · Palette generator →