#174B9E#174B9E

#174B9E is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.0% C 0.146 H 259.8°. Best body text is #FFFFFF at 8.28:1 contrast (WCAG AA passes).

Color values

HEX	#174B9E
RGB	rgb(23, 75, 158)
HSL	hsl(217, 75%, 35%)
HSV	hsv(217, 85%, 62%)
CMYK	cmyk(85.4%, 52.5%, 0%, 38%)
CIE-LAB	lab(33.31, 15.67, -49.79)
CIE-LCH	lch(33.31, 52.20, 287.47°)
OKLab	oklab(43.02% -0.0259 -0.1436)
OKLCH	oklch(43.02% 0.146 259.8)
XYZ	xyz(9.0387, 7.6818, 33.3475)
Luminance	0.0768 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#174B9E #9E6A17

analogous

#178E9E #174B9E #26179E

triadic

#174B9E #9E174B #4B9E17

tetradic

#174B9E #9E178E #9E6A17 #179E26

square

#174B9E #9E178E #9E6A17 #179E26

split-complementary

#174B9E #9E2617 #8E9E17

monochromatic

#071833 #0F3269 #174B9E #1F64D3 #4B86E5

Accessibility & contrast

On white

8.28

#174B9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#174B9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #174B9E

8.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##174B9E	#FFFFFF	#000000	##FFFFFF
##174B9E	1.00	8.28	2.54	8.28
#FFFFFF	8.28	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1055A1

Deuteranopia (green-blind)

#00499C

Tritanopia (blue-blind)

#005F6D

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #174b9e;
/* rgb */ color: rgb(23, 75, 158);
/* oklch */ color: oklch(43.0% 0.146 259.8);

Tailwind

colors: {
  custom: {
    50: '#6e7cbb',
    500: '#174b9e',
    950: '#000000',
  },
}

SCSS

$custom: #174b9e;
$custom-light: #6e7cbb;
$custom-dark: #000000;

JSON

{
  "hex": "#174b9e",
  "rgb": {
    "r": 23,
    "g": 75,
    "b": 158
  },
  "hsl": {
    "h": 216.889,
    "s": 74.586,
    "l": 35.49
  },
  "oklch": {
    "l": 0.43023,
    "c": 0.14588,
    "h": 259.8
  },
  "luminance": 0.07683
}

Semantic roles & 50–950 ramp

primary

#174B9E

secondary

#C6974A

accent

#A937F1

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080912

muted

#7B7B81

Preview Lab

Preview with #174B9E

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

Preview Lab → · Contrast checker → · Palette generator →