#17388F#17388F

#17388F is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.7% C 0.149 H 264.4°. Best body text is #FFFFFF at 10.51:1 contrast (WCAG AA passes).

Color values

HEX	#17388F
RGB	rgb(23, 56, 143)
HSL	hsl(224, 72%, 33%)
HSV	hsv(224, 84%, 56%)
CMYK	cmyk(83.9%, 60.8%, 0%, 43.9%)
CIE-LAB	lab(26.71, 22.67, -51.37)
CIE-LCH	lch(26.71, 56.15, 293.82°)
OKLab	oklab(37.66% -0.0146 -0.1485)
OKLCH	oklch(37.66% 0.149 264.4)
XYZ	xyz(6.7237, 4.9929, 26.5906)
Luminance	0.0499 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17388F #8F6E17

analogous

#17748F #17388F #32178F

triadic

#17388F #8F1738 #388F17

tetradic

#17388F #8F1774 #8F6E17 #178F32

square

#17388F #8F1774 #8F6E17 #178F32

split-complementary

#17388F #8F3217 #748F17

monochromatic

#060F26 #0F235A #17388F #1F4DC4 #406CE0

Accessibility & contrast

On white

10.51

#17388F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#17388F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17388F

10.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17388F	#FFFFFF	#000000	##FFFFFF
##17388F	1.00	10.51	2.00	10.51
#FFFFFF	10.51	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004592

Deuteranopia (green-blind)

#003A8D

Tritanopia (blue-blind)

#004E5E

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #17388f;
/* rgb */ color: rgb(23, 56, 143);
/* oklch */ color: oklch(37.7% 0.149 264.4);

Tailwind

colors: {
  custom: {
    50: '#6b6eb1',
    500: '#17388f',
    950: '#000000',
  },
}

SCSS

$custom: #17388f;
$custom-light: #6b6eb1;
$custom-dark: #000000;

JSON

{
  "hex": "#17388f",
  "rgb": {
    "r": 23,
    "g": 56,
    "b": 143
  },
  "hsl": {
    "h": 223.5,
    "s": 72.289,
    "l": 32.549
  },
  "oklch": {
    "l": 0.37658,
    "c": 0.14926,
    "h": 264.4
  },
  "luminance": 0.04994
}

Semantic roles & 50–950 ramp

primary

#17388F

secondary

#C19E41

accent

#BD39EF

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #17388F

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

Preview Lab → · Contrast checker → · Palette generator →