#17478D#17478D

#17478D is a dark, vivid blue. Relative luminance 0.066; OKLCH L 40.8% C 0.127 H 258.5°. Best body text is #FFFFFF at 9.04:1 contrast (WCAG AA passes).

Color values

HEX	#17478D
RGB	rgb(23, 71, 141)
HSL	hsl(216, 72%, 32%)
HSV	hsv(216, 84%, 55%)
CMYK	cmyk(83.7%, 49.6%, 0%, 44.7%)
CIE-LAB	lab(30.90, 11.45, -43.34)
CIE-LCH	lch(30.90, 44.82, 284.80°)
OKLab	oklab(40.79% -0.0254 -0.1246)
OKLCH	oklch(40.79% 0.127 258.5)
XYZ	xyz(7.4125, 6.6108, 26.0795)
Luminance	0.0661 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17478D #8D5D17

analogous

#17828D #17478D #22178D

triadic

#17478D #8D1747 #478D17

tetradic

#17478D #8D1782 #8D5D17 #178D22

square

#17478D #8D1782 #8D5D17 #178D22

split-complementary

#17478D #8D2217 #828D17

monochromatic

#061224 #0E2D58 #17478D #2061C2 #3F80E0

Accessibility & contrast

On white

9.04

#17478D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#17478D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17478D

9.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17478D	#FFFFFF	#000000	##FFFFFF
##17478D	1.00	9.04	2.32	9.04
#FFFFFF	9.04	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E4E90

Deuteranopia (green-blind)

#00448C

Tritanopia (blue-blind)

#005863

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #17478d;
/* rgb */ color: rgb(23, 71, 141);
/* oklch */ color: oklch(40.8% 0.127 258.5);

Tailwind

colors: {
  custom: {
    50: '#6979af',
    500: '#17478d',
    950: '#000000',
  },
}

SCSS

$custom: #17478d;
$custom-light: #6979af;
$custom-dark: #000000;

JSON

{
  "hex": "#17478d",
  "rgb": {
    "r": 23,
    "g": 71,
    "b": 141
  },
  "hsl": {
    "h": 215.593,
    "s": 71.951,
    "l": 32.157
  },
  "oklch": {
    "l": 0.40789,
    "c": 0.12722,
    "h": 258.5
  },
  "luminance": 0.06612
}

Semantic roles & 50–950 ramp

primary

#17478D

secondary

#C08C40

accent

#A539EF

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #17478D

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

Preview Lab → · Contrast checker → · Palette generator →