#172E5F#172E5F

#172E5F is a dark, moderate blue. Relative luminance 0.030; OKLCH L 31.3% C 0.092 H 263.2°. Best body text is #FFFFFF at 13.19:1 contrast (WCAG AA passes).

Color values

HEX	#172E5F
RGB	rgb(23, 46, 95)
HSL	hsl(221, 61%, 23%)
HSV	hsv(221, 76%, 37%)
CMYK	cmyk(75.8%, 51.6%, 0%, 62.7%)
CIE-LAB	lab(19.89, 9.97, -31.88)
CIE-LCH	lch(19.89, 33.40, 287.36°)
OKLab	oklab(31.28% -0.0109 -0.0914)
OKLCH	oklch(31.28% 0.092 263.2)
XYZ	xyz(3.3952, 2.9620, 11.2170)
Luminance	0.0296 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172E5F #5F4817

analogous

#17525F #172E5F #24175F

triadic

#172E5F #5F172E #2E5F17

tetradic

#172E5F #5F1752 #5F4817 #175F24

square

#172E5F #5F1752 #5F4817 #175F24

split-complementary

#172E5F #5F2417 #525F17

monochromatic

#060C19 #0B162E #172E5F #234690 #2F5EC2

Accessibility & contrast

On white

13.19

#172E5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#172E5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172E5F

13.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172E5F	#FFFFFF	#000000	##FFFFFF
##172E5F	1.00	13.19	1.59	13.19
#FFFFFF	13.19	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#133461

Deuteranopia (green-blind)

#022D5E

Tritanopia (blue-blind)

#003A42

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #172e5f;
/* rgb */ color: rgb(23, 46, 95);
/* oklch */ color: oklch(31.3% 0.092 263.2);

Tailwind

colors: {
  custom: {
    50: '#5f668d',
    500: '#172e5f',
    950: '#000000',
  },
}

SCSS

$custom: #172e5f;
$custom-light: #5f668d;
$custom-dark: #000000;

JSON

{
  "hex": "#172e5f",
  "rgb": {
    "r": 23,
    "g": 46,
    "b": 95
  },
  "hsl": {
    "h": 220.833,
    "s": 61.017,
    "l": 23.137
  },
  "oklch": {
    "l": 0.3128,
    "c": 0.09209,
    "h": 263.2
  },
  "luminance": 0.02962
}

Semantic roles & 50–950 ramp

primary

#172E5F

secondary

#96793C

accent

#B144E4

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05050C

muted

#797A7D

Preview Lab

Preview with #172E5F

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

Preview Lab → · Contrast checker → · Palette generator →