#17378D#17378D

#17378D is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.3% C 0.148 H 264.6°. Best body text is #FFFFFF at 10.67:1 contrast (WCAG AA passes).

Color values

HEX	#17378D
RGB	rgb(23, 55, 141)
HSL	hsl(224, 72%, 32%)
HSV	hsv(224, 84%, 55%)
CMYK	cmyk(83.7%, 61%, 0%, 44.7%)
CIE-LAB	lab(26.26, 22.56, -50.86)
CIE-LCH	lch(26.26, 55.64, 293.92°)
OKLab	oklab(37.27% -0.014 -0.1471)
OKLCH	oklch(37.27% 0.148 264.6)
XYZ	xyz(6.5255, 4.8368, 25.7838)
Luminance	0.0484 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17378D #8D6D17

analogous

#17728D #17378D #32178D

triadic

#17378D #8D1737 #378D17

tetradic

#17378D #8D1772 #8D6D17 #178D32

square

#17378D #8D1772 #8D6D17 #178D32

split-complementary

#17378D #8D3217 #728D17

monochromatic

#060E24 #0E2258 #17378D #204CC2 #3F6AE0

Accessibility & contrast

On white

10.67

#17378D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#17378D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17378D

10.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17378D	#FFFFFF	#000000	##FFFFFF
##17378D	1.00	10.67	1.97	10.67
#FFFFFF	10.67	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004490

Deuteranopia (green-blind)

#00398B

Tritanopia (blue-blind)

#004D5C

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #17378d;
/* rgb */ color: rgb(23, 55, 141);
/* oklch */ color: oklch(37.3% 0.148 264.6);

Tailwind

colors: {
  custom: {
    50: '#6a6daf',
    500: '#17378d',
    950: '#000000',
  },
}

SCSS

$custom: #17378d;
$custom-light: #6a6daf;
$custom-dark: #000000;

JSON

{
  "hex": "#17378d",
  "rgb": {
    "r": 23,
    "g": 55,
    "b": 141
  },
  "hsl": {
    "h": 223.729,
    "s": 71.951,
    "l": 32.157
  },
  "oklch": {
    "l": 0.37268,
    "c": 0.14776,
    "h": 264.6
  },
  "luminance": 0.04838
}

Semantic roles & 50–950 ramp

primary

#17378D

secondary

#C09D40

accent

#BD39EF

background

#F6F6FA

surface

#ECEBF5

border

#C7C6CF

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #17378D

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

Preview Lab → · Contrast checker → · Palette generator →