#17388E#17388E

#17388E is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.6% C 0.148 H 264.3°. Best body text is #FFFFFF at 10.54:1 contrast (WCAG AA passes).

Color values

HEX	#17388E
RGB	rgb(23, 56, 142)
HSL	hsl(223, 72%, 32%)
HSV	hsv(223, 84%, 56%)
CMYK	cmyk(83.8%, 60.6%, 0%, 44.3%)
CIE-LAB	lab(26.63, 22.27, -50.89)
CIE-LCH	lch(26.63, 55.55, 293.64°)
OKLab	oklab(37.57% -0.0146 -0.1471)
OKLCH	oklch(37.57% 0.148 264.3)
XYZ	xyz(6.6483, 4.9627, 26.1934)
Luminance	0.0496 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17388E #8E6D17

analogous

#17748E #17388E #31178E

triadic

#17388E #8E1738 #388E17

tetradic

#17388E #8E1774 #8E6D17 #178E31

square

#17388E #8E1774 #8E6D17 #178E31

split-complementary

#17388E #8E3117 #748E17

monochromatic

#060E25 #0E2359 #17388E #204DC3 #3F6CE0

Accessibility & contrast

On white

10.54

#17388E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#17388E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17388E

10.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17388E	#FFFFFF	#000000	##FFFFFF
##17388E	1.00	10.54	1.99	10.54
#FFFFFF	10.54	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004591

Deuteranopia (green-blind)

#003A8C

Tritanopia (blue-blind)

#004E5D

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #17388e;
/* rgb */ color: rgb(23, 56, 142);
/* oklch */ color: oklch(37.6% 0.148 264.3);

Tailwind

colors: {
  custom: {
    50: '#6b6eb0',
    500: '#17388e',
    950: '#000000',
  },
}

SCSS

$custom: #17388e;
$custom-light: #6b6eb0;
$custom-dark: #000000;

JSON

{
  "hex": "#17388e",
  "rgb": {
    "r": 23,
    "g": 56,
    "b": 142
  },
  "hsl": {
    "h": 223.361,
    "s": 72.121,
    "l": 32.353
  },
  "oklch": {
    "l": 0.37567,
    "c": 0.14787,
    "h": 264.3
  },
  "luminance": 0.04963
}

Semantic roles & 50–950 ramp

primary

#17388E

secondary

#C09D40

accent

#BC39EF

background

#F6F6FA

surface

#ECEBF5

border

#C7C6CF

text

#080711

muted

#7A7A80

Preview Lab

Preview with #17388E

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

Preview Lab → · Contrast checker → · Palette generator →