#174B9D#174B9D

#174B9D is a dark, vivid blue. Relative luminance 0.076; OKLCH L 42.9% C 0.144 H 259.6°. Best body text is #FFFFFF at 8.30:1 contrast (WCAG AA passes).

Color values

HEX	#174B9D
RGB	rgb(23, 75, 157)
HSL	hsl(217, 74%, 35%)
HSV	hsv(217, 85%, 62%)
CMYK	cmyk(85.4%, 52.2%, 0%, 38.4%)
CIE-LAB	lab(33.24, 15.27, -49.31)
CIE-LCH	lch(33.24, 51.62, 287.20°)
OKLab	oklab(42.94% -0.026 -0.1421)
OKLCH	oklch(42.94% 0.144 259.6)
XYZ	xyz(8.9530, 7.6475, 32.8960)
Luminance	0.0765 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#174B9D #9D6917

analogous

#178E9D #174B9D #26179D

triadic

#174B9D #9D174B #4B9D17

tetradic

#174B9D #9D178E #9D6917 #179D26

square

#174B9D #9D178E #9D6917 #179D26

split-complementary

#174B9D #9D2617 #8E9D17

monochromatic

#071832 #0F3268 #174B9D #1F65D2 #4A86E4

Accessibility & contrast

On white

8.30

#174B9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#174B9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #174B9D

8.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##174B9D	#FFFFFF	#000000	##FFFFFF
##174B9D	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)

#1355A0

Deuteranopia (green-blind)

#00489B

Tritanopia (blue-blind)

#005F6C

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #174b9d;
/* rgb */ color: rgb(23, 75, 157);
/* oklch */ color: oklch(42.9% 0.144 259.6);

Tailwind

colors: {
  custom: {
    50: '#6d7cbb',
    500: '#174b9d',
    950: '#000000',
  },
}

SCSS

$custom: #174b9d;
$custom-light: #6d7cbb;
$custom-dark: #000000;

JSON

{
  "hex": "#174b9d",
  "rgb": {
    "r": 23,
    "g": 75,
    "b": 157
  },
  "hsl": {
    "h": 216.716,
    "s": 74.444,
    "l": 35.294
  },
  "oklch": {
    "l": 0.42944,
    "c": 0.14449,
    "h": 259.6
  },
  "luminance": 0.07649
}

Semantic roles & 50–950 ramp

primary

#174B9D

secondary

#C6964A

accent

#A937F1

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080912

muted

#7B7B81

Preview Lab

Preview with #174B9D

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

Preview Lab → · Contrast checker → · Palette generator →