#17398C#17398C

#17398C is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.6% C 0.144 H 263.9°. Best body text is #FFFFFF at 10.50:1 contrast (WCAG AA passes).

Color values

HEX	#17398C
RGB	rgb(23, 57, 140)
HSL	hsl(223, 72%, 32%)
HSV	hsv(223, 84%, 55%)
CMYK	cmyk(83.6%, 59.3%, 0%, 45.1%)
CIE-LAB	lab(26.74, 20.76, -49.47)
CIE-LCH	lch(26.74, 53.65, 292.76°)
OKLab	oklab(37.6% -0.0153 -0.143)
OKLCH	oklch(37.6% 0.144 263.9)
XYZ	xyz(6.5484, 5.0011, 25.4260)
Luminance	0.0500 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17398C #8C6A17

analogous

#17748C #17398C #30178C

triadic

#17398C #8C1739 #398C17

tetradic

#17398C #8C1774 #8C6A17 #178C30

square

#17398C #8C1774 #8C6A17 #178C30

split-complementary

#17398C #8C3017 #748C17

monochromatic

#060E23 #0E2457 #17398C #204EC1 #3E6DDF

Accessibility & contrast

On white

10.50

#17398C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#17398C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17398C

10.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17398C	#FFFFFF	#000000	##FFFFFF
##17398C	1.00	10.50	2.00	10.50
#FFFFFF	10.50	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458F

Deuteranopia (green-blind)

#003A8A

Tritanopia (blue-blind)

#004E5C

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #17398c;
/* rgb */ color: rgb(23, 57, 140);
/* oklch */ color: oklch(37.6% 0.144 263.9);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#17398c",
  "rgb": {
    "r": 23,
    "g": 57,
    "b": 140
  },
  "hsl": {
    "h": 222.564,
    "s": 71.779,
    "l": 31.961
  },
  "oklch": {
    "l": 0.37596,
    "c": 0.1438,
    "h": 263.9
  },
  "luminance": 0.05002
}

Semantic roles & 50–950 ramp

primary

#17398C

secondary

#BF9A3F

accent

#BA39EF

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #17398C

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

Preview Lab → · Contrast checker → · Palette generator →