#172158#172158

#172158 is a dark, moderate blue. Relative luminance 0.020; OKLCH L 27.7% C 0.100 H 270.7°. Best body text is #FFFFFF at 15.06:1 contrast (WCAG AA passes).

Color values

HEX	#172158
RGB	rgb(23, 33, 88)
HSL	hsl(231, 59%, 22%)
HSV	hsv(231, 74%, 35%)
CMYK	cmyk(73.9%, 62.5%, 0%, 65.5%)
CIE-LAB	lab(15.35, 16.63, -34.56)
CIE-LCH	lch(15.35, 38.36, 295.70°)
OKLab	oklab(27.67% 0.0011 -0.0996)
OKLCH	oklch(27.67% 0.1 270.7)
XYZ	xyz(2.6581, 1.9742, 9.4716)
Luminance	0.0197 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172158 #584E17

analogous

#174258 #172158 #2E1758

triadic

#172158 #581721 #215817

tetradic

#172158 #581742 #584E17 #17582E

square

#172158 #581742 #584E17 #17582E

split-complementary

#172158 #582E17 #425817

monochromatic

#060918 #0A0F27 #172158 #243389 #3045B9

Accessibility & contrast

On white

15.06

#172158 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#172158 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172158

15.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172158	#FFFFFF	#000000	##FFFFFF
##172158	1.00	15.06	1.39	15.06
#FFFFFF	15.06	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00295A

Deuteranopia (green-blind)

#002457

Tritanopia (blue-blind)

#002F38

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #172158;
/* rgb */ color: rgb(23, 33, 88);
/* oklch */ color: oklch(27.7% 0.100 270.7);

Tailwind

colors: {
  custom: {
    50: '#5e5c88',
    500: '#172158',
    950: '#000000',
  },
}

SCSS

$custom: #172158;
$custom-light: #5e5c88;
$custom-dark: #000000;

JSON

{
  "hex": "#172158",
  "rgb": {
    "r": 23,
    "g": 33,
    "b": 88
  },
  "hsl": {
    "h": 230.769,
    "s": 58.559,
    "l": 21.765
  },
  "oklch": {
    "l": 0.27669,
    "c": 0.09958,
    "h": 270.7
  },
  "luminance": 0.01974
}

Semantic roles & 50–950 ramp

primary

#172158

secondary

#8F823C

accent

#CA46E2

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05040B

muted

#79797C

Preview Lab

Preview with #172158

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

Preview Lab → · Contrast checker → · Palette generator →