#174B9F#174B9F

#174B9F is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.1% C 0.147 H 259.9°. Best body text is #FFFFFF at 8.26:1 contrast (WCAG AA passes).

Color values

HEX	#174B9F
RGB	rgb(23, 75, 159)
HSL	hsl(217, 75%, 36%)
HSV	hsv(217, 86%, 62%)
CMYK	cmyk(85.5%, 52.8%, 0%, 37.6%)
CIE-LAB	lab(33.39, 16.08, -50.28)
CIE-LCH	lch(33.39, 52.79, 287.74°)
OKLab	oklab(43.1% -0.0258 -0.145)
OKLCH	oklch(43.1% 0.147 259.9)
XYZ	xyz(9.1251, 7.7164, 33.8026)
Luminance	0.0772 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#174B9F #9F6B17

analogous

#178F9F #174B9F #27179F

triadic

#174B9F #9F174B #4B9F17

tetradic

#174B9F #9F178F #9F6B17 #179F27

square

#174B9F #9F178F #9F6B17 #179F27

split-complementary

#174B9F #9F2717 #8F9F17

monochromatic

#081934 #0F326A #174B9F #1F64D4 #4B86E5

Accessibility & contrast

On white

8.26

#174B9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#174B9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #174B9F

8.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##174B9F	#FFFFFF	#000000	##FFFFFF
##174B9F	1.00	8.26	2.54	8.26
#FFFFFF	8.26	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E55A2

Deuteranopia (green-blind)

#00499D

Tritanopia (blue-blind)

#00606D

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #174b9f;
/* rgb */ color: rgb(23, 75, 159);
/* oklch */ color: oklch(43.1% 0.147 259.9);

Tailwind

colors: {
  custom: {
    50: '#6e7cbc',
    500: '#174b9f',
    950: '#000000',
  },
}

SCSS

$custom: #174b9f;
$custom-light: #6e7cbc;
$custom-dark: #000000;

JSON

{
  "hex": "#174b9f",
  "rgb": {
    "r": 23,
    "g": 75,
    "b": 159
  },
  "hsl": {
    "h": 217.059,
    "s": 74.725,
    "l": 35.686
  },
  "oklch": {
    "l": 0.43103,
    "c": 0.14725,
    "h": 259.9
  },
  "luminance": 0.07718
}

Semantic roles & 50–950 ramp

primary

#174B9F

secondary

#C7974B

accent

#AA36F1

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080912

muted

#7B7B81

Preview Lab

Preview with #174B9F

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

Preview Lab → · Contrast checker → · Palette generator →