#17378C#17378C

#17378C is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.2% C 0.146 H 264.5°. Best body text is #FFFFFF at 10.71:1 contrast (WCAG AA passes).

Color values

HEX	#17378C
RGB	rgb(23, 55, 140)
HSL	hsl(224, 72%, 32%)
HSV	hsv(224, 84%, 55%)
CMYK	cmyk(83.6%, 60.7%, 0%, 45.1%)
CIE-LAB	lab(26.18, 22.16, -50.39)
CIE-LCH	lch(26.18, 55.04, 293.74°)
OKLab	oklab(37.18% -0.014 -0.1457)
OKLCH	oklch(37.18% 0.146 264.5)
XYZ	xyz(6.4515, 4.8072, 25.3937)
Luminance	0.0481 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17378C #8C6C17

analogous

#17728C #17378C #32178C

triadic

#17378C #8C1737 #378C17

tetradic

#17378C #8C1772 #8C6C17 #178C32

square

#17378C #8C1772 #8C6C17 #178C32

split-complementary

#17378C #8C3217 #728C17

monochromatic

#060E23 #0E2257 #17378C #204CC1 #3E6ADF

Accessibility & contrast

On white

10.71

#17378C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#17378C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17378C

10.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17378C	#FFFFFF	#000000	##FFFFFF
##17378C	1.00	10.71	1.96	10.71
#FFFFFF	10.71	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448F

Deuteranopia (green-blind)

#00398A

Tritanopia (blue-blind)

#004D5C

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #17378c;
/* rgb */ color: rgb(23, 55, 140);
/* oklch */ color: oklch(37.2% 0.146 264.5);

Tailwind

colors: {
  custom: {
    50: '#6a6dae',
    500: '#17378c',
    950: '#000000',
  },
}

SCSS

$custom: #17378c;
$custom-light: #6a6dae;
$custom-dark: #000000;

JSON

{
  "hex": "#17378c",
  "rgb": {
    "r": 23,
    "g": 55,
    "b": 140
  },
  "hsl": {
    "h": 223.59,
    "s": 71.779,
    "l": 31.961
  },
  "oklch": {
    "l": 0.37177,
    "c": 0.14637,
    "h": 264.5
  },
  "luminance": 0.04808
}

Semantic roles & 50–950 ramp

primary

#17378C

secondary

#BF9C3F

accent

#BD39EF

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #17378C

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

Preview Lab → · Contrast checker → · Palette generator →