#172E5E#172E5E

#172E5E is a dark, moderate blue. Relative luminance 0.029; OKLCH L 31.2% C 0.091 H 263.0°. Best body text is #FFFFFF at 13.22:1 contrast (WCAG AA passes).

Color values

HEX	#172E5E
RGB	rgb(23, 46, 94)
HSL	hsl(221, 61%, 23%)
HSV	hsv(221, 76%, 37%)
CMYK	cmyk(75.5%, 51.1%, 0%, 63.1%)
CIE-LAB	lab(19.82, 9.55, -31.33)
CIE-LCH	lch(19.82, 32.76, 286.94°)
OKLab	oklab(31.2% -0.0111 -0.0898)
OKLCH	oklch(31.2% 0.091 263)
XYZ	xyz(3.3500, 2.9440, 10.9792)
Luminance	0.0294 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172E5E #5E4717

analogous

#17515E #172E5E #23175E

triadic

#172E5E #5E172E #2E5E17

tetradic

#172E5E #5E1751 #5E4717 #175E23

square

#172E5E #5E1751 #5E4717 #175E23

split-complementary

#172E5E #5E2317 #515E17

monochromatic

#060C19 #0B162D #172E5E #23468F #2F5EC0

Accessibility & contrast

On white

13.22

#172E5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#172E5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172E5E

13.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172E5E	#FFFFFF	#000000	##FFFFFF
##172E5E	1.00	13.22	1.59	13.22
#FFFFFF	13.22	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#143360

Deuteranopia (green-blind)

#042D5D

Tritanopia (blue-blind)

#003941

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #172e5e;
/* rgb */ color: rgb(23, 46, 94);
/* oklch */ color: oklch(31.2% 0.091 263.0);

Tailwind

colors: {
  custom: {
    50: '#5e668c',
    500: '#172e5e',
    950: '#000000',
  },
}

SCSS

$custom: #172e5e;
$custom-light: #5e668c;
$custom-dark: #000000;

JSON

{
  "hex": "#172e5e",
  "rgb": {
    "r": 23,
    "g": 46,
    "b": 94
  },
  "hsl": {
    "h": 220.563,
    "s": 60.684,
    "l": 22.941
  },
  "oklch": {
    "l": 0.312,
    "c": 0.09052,
    "h": 263
  },
  "luminance": 0.02944
}

Semantic roles & 50–950 ramp

primary

#172E5E

secondary

#95783C

accent

#B044E4

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05050C

muted

#797A7D

Preview Lab

Preview with #172E5E

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

Preview Lab → · Contrast checker → · Palette generator →