#17398E#17398E

#17398E is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.8% C 0.147 H 264.0°. Best body text is #FFFFFF at 10.44:1 contrast (WCAG AA passes).

Color values

HEX	#17398E
RGB	rgb(23, 57, 142)
HSL	hsl(223, 72%, 32%)
HSV	hsv(223, 84%, 56%)
CMYK	cmyk(83.8%, 59.9%, 0%, 44.3%)
CIE-LAB	lab(26.91, 21.57, -50.44)
CIE-LCH	lch(26.91, 54.86, 293.16°)
OKLab	oklab(37.78% -0.0152 -0.1458)
OKLCH	oklch(37.78% 0.147 264)
XYZ	xyz(6.6972, 5.0606, 26.2098)
Luminance	0.0506 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17398E #8E6C17

analogous

#17758E #17398E #30178E

triadic

#17398E #8E1739 #398E17

tetradic

#17398E #8E1775 #8E6C17 #178E30

square

#17398E #8E1775 #8E6C17 #178E30

split-complementary

#17398E #8E3017 #758E17

monochromatic

#060F25 #0E2459 #17398E #204EC3 #3F6DE0

Accessibility & contrast

On white

10.44

#17398E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#17398E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17398E

10.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17398E	#FFFFFF	#000000	##FFFFFF
##17398E	1.00	10.44	2.01	10.44
#FFFFFF	10.44	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004591

Deuteranopia (green-blind)

#003A8C

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #17398e;
/* rgb */ color: rgb(23, 57, 142);
/* oklch */ color: oklch(37.8% 0.147 264.0);

Tailwind

colors: {
  custom: {
    50: '#6a6eb0',
    500: '#17398e',
    950: '#000000',
  },
}

SCSS

$custom: #17398e;
$custom-light: #6a6eb0;
$custom-dark: #000000;

JSON

{
  "hex": "#17398e",
  "rgb": {
    "r": 23,
    "g": 57,
    "b": 142
  },
  "hsl": {
    "h": 222.857,
    "s": 72.121,
    "l": 32.353
  },
  "oklch": {
    "l": 0.37776,
    "c": 0.14659,
    "h": 264
  },
  "luminance": 0.05061
}

Semantic roles & 50–950 ramp

primary

#17398E

secondary

#C09C40

accent

#BB39EF

background

#F6F6FA

surface

#ECEBF5

border

#C7C6CF

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #17398E

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

Preview Lab → · Contrast checker → · Palette generator →