#172F63#172F63

#172F63 is a dark, moderate blue. Relative luminance 0.031; OKLCH L 31.8% C 0.097 H 263.3°. Best body text is #FFFFFF at 12.94:1 contrast (WCAG AA passes).

Color values

HEX	#172F63
RGB	rgb(23, 47, 99)
HSL	hsl(221, 62%, 24%)
HSV	hsv(221, 77%, 39%)
CMYK	cmyk(76.8%, 52.5%, 0%, 61.2%)
CIE-LAB	lab(20.50, 10.91, -33.52)
CIE-LCH	lch(20.50, 35.25, 288.03°)
OKLab	oklab(31.84% -0.0113 -0.0962)
OKLCH	oklch(31.84% 0.097 263.3)
XYZ	xyz(3.6212, 3.1157, 12.2125)
Luminance	0.0312 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F63 #634B17

analogous

#175563 #172F63 #251763

triadic

#172F63 #63172F #2F6317

tetradic

#172F63 #631755 #634B17 #176325

square

#172F63 #631755 #634B17 #176325

split-complementary

#172F63 #632517 #556317

monochromatic

#060C19 #0B1731 #172F63 #234795 #2E5EC6

Accessibility & contrast

On white

12.94

#172F63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#172F63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F63

12.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F63	#FFFFFF	#000000	##FFFFFF
##172F63	1.00	12.94	1.62	12.94
#FFFFFF	12.94	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#113565

Deuteranopia (green-blind)

#002E62

Tritanopia (blue-blind)

#003B44

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #172f63;
/* rgb */ color: rgb(23, 47, 99);
/* oklch */ color: oklch(31.8% 0.097 263.3);

Tailwind

colors: {
  custom: {
    50: '#606790',
    500: '#172f63',
    950: '#000000',
  },
}

SCSS

$custom: #172f63;
$custom-light: #606790;
$custom-dark: #000000;

JSON

{
  "hex": "#172f63",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 99
  },
  "hsl": {
    "h": 221.053,
    "s": 62.295,
    "l": 23.922
  },
  "oklch": {
    "l": 0.31841,
    "c": 0.09691,
    "h": 263.3
  },
  "luminance": 0.03116
}

Semantic roles & 50–950 ramp

primary

#172F63

secondary

#9A7C3C

accent

#B242E5

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05060C

muted

#797A7D

Preview Lab

Preview with #172F63

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

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