#173258#173258

#173258 is a dark, moderate blue. Relative luminance 0.032; OKLCH L 31.8% C 0.076 H 257.3°. Best body text is #FFFFFF at 12.86:1 contrast (WCAG AA passes).

Color values

HEX	#173258
RGB	rgb(23, 50, 88)
HSL	hsl(215, 59%, 22%)
HSV	hsv(215, 74%, 35%)
CMYK	cmyk(73.9%, 43.2%, 0%, 65.5%)
CIE-LAB	lab(20.70, 4.16, -25.95)
CIE-LCH	lch(20.70, 26.28, 279.12°)
OKLab	oklab(31.75% -0.0166 -0.074)
OKLCH	oklch(31.75% 0.076 257.3)
XYZ	xyz(3.2548, 3.1676, 9.6705)
Luminance	0.0317 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173258 #583D17

analogous

#175358 #173258 #1D1758

triadic

#173258 #581732 #325817

tetradic

#173258 #581753 #583D17 #17581D

square

#173258 #581753 #583D17 #17581D

split-complementary

#173258 #581D17 #535817

monochromatic

#060E18 #0A1627 #173258 #244E89 #3069B9

Accessibility & contrast

On white

12.86

#173258 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#173258 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173258

12.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173258	#FFFFFF	#000000	##FFFFFF
##173258	1.00	12.86	1.63	12.86
#FFFFFF	12.86	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#21355A

Deuteranopia (green-blind)

#172F57

Tritanopia (blue-blind)

#003B40

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #173258;
/* rgb */ color: rgb(23, 50, 88);
/* oklch */ color: oklch(31.8% 0.076 257.3);

Tailwind

colors: {
  custom: {
    50: '#5d6987',
    500: '#173258',
    950: '#000000',
  },
}

SCSS

$custom: #173258;
$custom-light: #5d6987;
$custom-dark: #000000;

JSON

{
  "hex": "#173258",
  "rgb": {
    "r": 23,
    "g": 50,
    "b": 88
  },
  "hsl": {
    "h": 215.077,
    "s": 58.559,
    "l": 21.765
  },
  "oklch": {
    "l": 0.31751,
    "c": 0.07581,
    "h": 257.3
  },
  "luminance": 0.03168
}

Semantic roles & 50–950 ramp

primary

#173258

secondary

#8F6C3C

accent

#A146E2

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#05060B

muted

#797A7C

Preview Lab

Preview with #173258

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

Preview Lab → · Contrast checker → · Palette generator →