#17398B#17398B

#17398B is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.5% C 0.142 H 263.8°. Best body text is #FFFFFF at 10.53:1 contrast (WCAG AA passes).

Color values

HEX	#17398B
RGB	rgb(23, 57, 139)
HSL	hsl(222, 72%, 32%)
HSV	hsv(222, 83%, 55%)
CMYK	cmyk(83.5%, 59%, 0%, 45.5%)
CIE-LAB	lab(26.65, 20.35, -48.99)
CIE-LCH	lch(26.65, 53.05, 292.56°)
OKLab	oklab(37.51% -0.0154 -0.1416)
OKLCH	oklch(37.51% 0.142 263.8)
XYZ	xyz(6.4750, 4.9717, 25.0395)
Luminance	0.0497 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17398B #8B6917

analogous

#17738B #17398B #2F178B

triadic

#17398B #8B1739 #398B17

tetradic

#17398B #8B1773 #8B6917 #178B2F

square

#17398B #8B1773 #8B6917 #178B2F

split-complementary

#17398B #8B2F17 #738B17

monochromatic

#060E22 #0E2356 #17398B #204FC0 #3D6DDF

Accessibility & contrast

On white

10.53

#17398B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#17398B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17398B

10.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17398B	#FFFFFF	#000000	##FFFFFF
##17398B	1.00	10.53	1.99	10.53
#FFFFFF	10.53	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458E

Deuteranopia (green-blind)

#003A89

Tritanopia (blue-blind)

#004E5C

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #17398b;
/* rgb */ color: rgb(23, 57, 139);
/* oklch */ color: oklch(37.5% 0.142 263.8);

Tailwind

colors: {
  custom: {
    50: '#6a6eae',
    500: '#17398b',
    950: '#000000',
  },
}

SCSS

$custom: #17398b;
$custom-light: #6a6eae;
$custom-dark: #000000;

JSON

{
  "hex": "#17398b",
  "rgb": {
    "r": 23,
    "g": 57,
    "b": 139
  },
  "hsl": {
    "h": 222.414,
    "s": 71.605,
    "l": 31.765
  },
  "oklch": {
    "l": 0.37507,
    "c": 0.1424,
    "h": 263.8
  },
  "luminance": 0.04972
}

Semantic roles & 50–950 ramp

primary

#17398B

secondary

#BF993F

accent

#B939EE

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #17398B

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

Preview Lab → · Contrast checker → · Palette generator →