#174C99#174C99

#174C99 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 42.9% C 0.138 H 258.5°. Best body text is #FFFFFF at 8.30:1 contrast (WCAG AA passes).

Color values

HEX	#174C99
RGB	rgb(23, 76, 153)
HSL	hsl(216, 74%, 35%)
HSV	hsv(216, 85%, 60%)
CMYK	cmyk(85%, 50.3%, 0%, 40%)
CIE-LAB	lab(33.24, 12.96, -46.88)
CIE-LCH	lch(33.24, 48.64, 285.45°)
OKLab	oklab(42.86% -0.0273 -0.135)
OKLCH	oklch(42.86% 0.138 258.5)
XYZ	xyz(8.6854, 7.6499, 31.1496)
Luminance	0.0765 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#174C99 #996417

analogous

#178D99 #174C99 #231799

triadic

#174C99 #99174C #4C9917

tetradic

#174C99 #99178D #996417 #179923

square

#174C99 #99178D #996417 #179923

split-complementary

#174C99 #992317 #8D9917

monochromatic

#07172F #0F3264 #174C99 #1F66CE #4787E3

Accessibility & contrast

On white

8.30

#174C99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#174C99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #174C99

8.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##174C99	#FFFFFF	#000000	##FFFFFF
##174C99	1.00	8.30	2.53	8.30
#FFFFFF	8.30	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D549C

Deuteranopia (green-blind)

#004997

Tritanopia (blue-blind)

#005F6B

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #174c99;
/* rgb */ color: rgb(23, 76, 153);
/* oklch */ color: oklch(42.9% 0.138 258.5);

Tailwind

colors: {
  custom: {
    50: '#6c7db8',
    500: '#174c99',
    950: '#000000',
  },
}

SCSS

$custom: #174c99;
$custom-light: #6c7db8;
$custom-dark: #000000;

JSON

{
  "hex": "#174c99",
  "rgb": {
    "r": 23,
    "g": 76,
    "b": 153
  },
  "hsl": {
    "h": 215.538,
    "s": 73.864,
    "l": 34.51
  },
  "oklch": {
    "l": 0.42856,
    "c": 0.13771,
    "h": 258.5
  },
  "luminance": 0.07651
}

Semantic roles & 50–950 ramp

primary

#174C99

secondary

#C59147

accent

#A537F1

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080911

muted

#7B7B80

Preview Lab

Preview with #174C99

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

Preview Lab → · Contrast checker → · Palette generator →