#172B63#172B63

#172B63 is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.9% C 0.102 H 265.8°. Best body text is #FFFFFF at 13.44:1 contrast (WCAG AA passes).

Color values

HEX	#172B63
RGB	rgb(23, 43, 99)
HSL	hsl(224, 62%, 24%)
HSV	hsv(224, 77%, 39%)
CMYK	cmyk(76.8%, 56.6%, 0%, 61.2%)
CIE-LAB	lab(19.27, 13.83, -35.51)
CIE-LCH	lch(19.27, 38.11, 291.28°)
OKLab	oklab(30.9% -0.0075 -0.1022)
OKLCH	oklch(30.9% 0.102 265.8)
XYZ	xyz(3.4686, 2.8104, 12.1616)
Luminance	0.0281 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172B63 #634F17

analogous

#175163 #172B63 #291763

triadic

#172B63 #63172B #2B6317

tetradic

#172B63 #631751 #634F17 #176329

square

#172B63 #631751 #634F17 #176329

split-complementary

#172B63 #632917 #516317

monochromatic

#060B19 #0B1531 #172B63 #234195 #2E56C6

Accessibility & contrast

On white

13.44

#172B63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#172B63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172B63

13.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172B63	#FFFFFF	#000000	##FFFFFF
##172B63	1.00	13.44	1.56	13.44
#FFFFFF	13.44	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#043265

Deuteranopia (green-blind)

#002B62

Tritanopia (blue-blind)

#003942

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #172b63;
/* rgb */ color: rgb(23, 43, 99);
/* oklch */ color: oklch(30.9% 0.102 265.8);

Tailwind

colors: {
  custom: {
    50: '#606390',
    500: '#172b63',
    950: '#000000',
  },
}

SCSS

$custom: #172b63;
$custom-light: #606390;
$custom-dark: #000000;

JSON

{
  "hex": "#172b63",
  "rgb": {
    "r": 23,
    "g": 43,
    "b": 99
  },
  "hsl": {
    "h": 224.211,
    "s": 62.295,
    "l": 23.922
  },
  "oklch": {
    "l": 0.30903,
    "c": 0.10247,
    "h": 265.8
  },
  "luminance": 0.02811
}

Semantic roles & 50–950 ramp

primary

#172B63

secondary

#9A813C

accent

#BA42E5

background

#F6F5F8

surface

#EBEAF0

border

#C6C6CB

text

#05050C

muted

#7A797D

Preview Lab

Preview with #172B63

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

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