#174C9F#174C9F

#174C9F is a dark, vivid blue. Relative luminance 0.079; OKLCH L 43.3% C 0.146 H 259.6°. Best body text is #FFFFFF at 8.17:1 contrast (WCAG AA passes).

Color values

HEX	#174C9F
RGB	rgb(23, 76, 159)
HSL	hsl(217, 75%, 36%)
HSV	hsv(217, 86%, 62%)
CMYK	cmyk(85.5%, 52.2%, 0%, 37.6%)
CIE-LAB	lab(33.68, 15.40, -49.81)
CIE-LCH	lch(33.68, 52.13, 287.18°)
OKLab	oklab(43.33% -0.0265 -0.1436)
OKLCH	oklch(43.33% 0.146 259.6)
XYZ	xyz(9.1935, 7.8531, 33.8254)
Luminance	0.0785 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#174C9F #9F6A17

analogous

#17909F #174C9F #26179F

triadic

#174C9F #9F174C #4C9F17

tetradic

#174C9F #9F1790 #9F6A17 #179F26

square

#174C9F #9F1790 #9F6A17 #179F26

split-complementary

#174C9F #9F2617 #909F17

monochromatic

#081934 #0F326A #174C9F #1F66D4 #4B87E5

Accessibility & contrast

On white

8.17

#174C9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#174C9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #174C9F

8.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##174C9F	#FFFFFF	#000000	##FFFFFF
##174C9F	1.00	8.17	2.57	8.17
#FFFFFF	8.17	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1356A2

Deuteranopia (green-blind)

#00499D

Tritanopia (blue-blind)

#00606E

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #174c9f;
/* rgb */ color: rgb(23, 76, 159);
/* oklch */ color: oklch(43.3% 0.146 259.6);

Tailwind

colors: {
  custom: {
    50: '#6e7dbc',
    500: '#174c9f',
    950: '#000000',
  },
}

SCSS

$custom: #174c9f;
$custom-light: #6e7dbc;
$custom-dark: #000000;

JSON

{
  "hex": "#174c9f",
  "rgb": {
    "r": 23,
    "g": 76,
    "b": 159
  },
  "hsl": {
    "h": 216.618,
    "s": 74.725,
    "l": 35.686
  },
  "oklch": {
    "l": 0.43325,
    "c": 0.146,
    "h": 259.6
  },
  "luminance": 0.07854
}

Semantic roles & 50–950 ramp

primary

#174C9F

secondary

#C7974B

accent

#A936F1

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080912

muted

#7B7B81

Preview Lab

Preview with #174C9F

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

Preview Lab → · Contrast checker → · Palette generator →