#172F7C#172F7C

#172F7C is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.0% C 0.134 H 266.0°. Best body text is #FFFFFF at 12.11:1 contrast (WCAG AA passes).

Color values

HEX	#172F7C
RGB	rgb(23, 47, 124)
HSL	hsl(226, 69%, 29%)
HSV	hsv(226, 81%, 49%)
CMYK	cmyk(81.5%, 62.1%, 0%, 51.4%)
CIE-LAB	lab(22.55, 21.27, -46.29)
CIE-LCH	lch(22.55, 50.94, 294.68°)
OKLab	oklab(34.03% -0.0093 -0.1338)
OKLCH	oklch(34.03% 0.134 266)
XYZ	xyz(5.0067, 3.6698, 19.5094)
Luminance	0.0367 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F7C #7C6417

analogous

#17627C #172F7C #32177C

triadic

#172F7C #7C172F #2F7C17

tetradic

#172F7C #7C1762 #7C6417 #177C32

square

#172F7C #7C1762 #7C6417 #177C32

split-complementary

#172F7C #7C3217 #627C17

monochromatic

#050A1A #0D1B48 #172F7C #2143B0 #345BD9

Accessibility & contrast

On white

12.11

#172F7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#172F7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F7C

12.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F7C	#FFFFFF	#000000	##FFFFFF
##172F7C	1.00	12.11	1.73	12.11
#FFFFFF	12.11	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B7F

Deuteranopia (green-blind)

#00317B

Tritanopia (blue-blind)

#004350

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #172f7c;
/* rgb */ color: rgb(23, 47, 124);
/* oklch */ color: oklch(34.0% 0.134 266.0);

Tailwind

colors: {
  custom: {
    50: '#6667a3',
    500: '#172f7c',
    950: '#000000',
  },
}

SCSS

$custom: #172f7c;
$custom-light: #6667a3;
$custom-dark: #000000;

JSON

{
  "hex": "#172f7c",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 124
  },
  "hsl": {
    "h": 225.743,
    "s": 68.707,
    "l": 28.824
  },
  "oklch": {
    "l": 0.3403,
    "c": 0.13412,
    "h": 266
  },
  "luminance": 0.0367
}

Semantic roles & 50–950 ramp

primary

#172F7C

secondary

#B1963E

accent

#C23CEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #172F7C

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

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