#17398A#17398A

#17398A is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.4% C 0.141 H 263.7°. Best body text is #FFFFFF at 10.56:1 contrast (WCAG AA passes).

Color values

HEX	#17398A
RGB	rgb(23, 57, 138)
HSL	hsl(222, 71%, 32%)
HSV	hsv(222, 83%, 54%)
CMYK	cmyk(83.3%, 58.7%, 0%, 45.9%)
CIE-LAB	lab(26.57, 19.95, -48.51)
CIE-LCH	lch(26.57, 52.45, 292.35°)
OKLab	oklab(37.42% -0.0155 -0.1401)
OKLCH	oklch(37.42% 0.141 263.7)
XYZ	xyz(6.4023, 4.9426, 24.6564)
Luminance	0.0494 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17398A #8A6817

analogous

#17738A #17398A #2F178A

triadic

#17398A #8A1739 #398A17

tetradic

#17398A #8A1773 #8A6817 #178A2F

square

#17398A #8A1773 #8A6817 #178A2F

split-complementary

#17398A #8A2F17 #738A17

monochromatic

#060E21 #0E2356 #17398A #204FBE #3D6DDF

Accessibility & contrast

On white

10.56

#17398A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#17398A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17398A

10.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17398A	#FFFFFF	#000000	##FFFFFF
##17398A	1.00	10.56	1.99	10.56
#FFFFFF	10.56	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448D

Deuteranopia (green-blind)

#003A88

Tritanopia (blue-blind)

#004D5B

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #17398a;
/* rgb */ color: rgb(23, 57, 138);
/* oklch */ color: oklch(37.4% 0.141 263.7);

Tailwind

colors: {
  custom: {
    50: '#696ead',
    500: '#17398a',
    950: '#000000',
  },
}

SCSS

$custom: #17398a;
$custom-light: #696ead;
$custom-dark: #000000;

JSON

{
  "hex": "#17398a",
  "rgb": {
    "r": 23,
    "g": 57,
    "b": 138
  },
  "hsl": {
    "h": 222.261,
    "s": 71.429,
    "l": 31.569
  },
  "oklch": {
    "l": 0.37418,
    "c": 0.14099,
    "h": 263.7
  },
  "luminance": 0.04943
}

Semantic roles & 50–950 ramp

primary

#17398A

secondary

#BE983F

accent

#B93AEE

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #17398A

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

Preview Lab → · Contrast checker → · Palette generator →