#172A63#172A63

#172A63 is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.7% C 0.104 H 266.4°. Best body text is #FFFFFF at 13.57:1 contrast (WCAG AA passes).

Color values

HEX	#172A63
RGB	rgb(23, 42, 99)
HSL	hsl(225, 62%, 24%)
HSV	hsv(225, 77%, 39%)
CMYK	cmyk(76.8%, 57.6%, 0%, 61.2%)
CIE-LAB	lab(18.97, 14.56, -36.00)
CIE-LCH	lch(18.97, 38.84, 292.02°)
OKLab	oklab(30.67% -0.0066 -0.1036)
OKLCH	oklch(30.67% 0.104 266.4)
XYZ	xyz(3.4327, 2.7386, 12.1497)
Luminance	0.0274 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A63 #635017

analogous

#175063 #172A63 #2A1763

triadic

#172A63 #63172A #2A6317

tetradic

#172A63 #631750 #635017 #17632A

square

#172A63 #631750 #635017 #17632A

split-complementary

#172A63 #632A17 #506317

monochromatic

#060B19 #0B1531 #172A63 #233F95 #2E54C6

Accessibility & contrast

On white

13.57

#172A63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#172A63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A63

13.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A63	#FFFFFF	#000000	##FFFFFF
##172A63	1.00	13.57	1.55	13.57
#FFFFFF	13.57	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003265

Deuteranopia (green-blind)

#002B62

Tritanopia (blue-blind)

#003842

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #172a63;
/* rgb */ color: rgb(23, 42, 99);
/* oklch */ color: oklch(30.7% 0.104 266.4);

Tailwind

colors: {
  custom: {
    50: '#606390',
    500: '#172a63',
    950: '#000000',
  },
}

SCSS

$custom: #172a63;
$custom-light: #606390;
$custom-dark: #000000;

JSON

{
  "hex": "#172a63",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 99
  },
  "hsl": {
    "h": 225,
    "s": 62.295,
    "l": 23.922
  },
  "oklch": {
    "l": 0.30674,
    "c": 0.10386,
    "h": 266.4
  },
  "luminance": 0.02739
}

Semantic roles & 50–950 ramp

primary

#172A63

secondary

#9A823C

accent

#BD42E5

background

#F6F5F8

surface

#EBEAF0

border

#C6C6CB

text

#05050C

muted

#7A797D

Preview Lab

Preview with #172A63

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

Preview Lab → · Contrast checker → · Palette generator →