#17388C#17388C

#17388C is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.4% C 0.145 H 264.2°. Best body text is #FFFFFF at 10.60:1 contrast (WCAG AA passes).

Color values

HEX	#17388C
RGB	rgb(23, 56, 140)
HSL	hsl(223, 72%, 32%)
HSV	hsv(223, 84%, 55%)
CMYK	cmyk(83.6%, 60%, 0%, 45.1%)
CIE-LAB	lab(26.46, 21.46, -49.93)
CIE-LCH	lch(26.46, 54.35, 293.26°)
OKLab	oklab(37.39% -0.0147 -0.1443)
OKLCH	oklch(37.39% 0.145 264.2)
XYZ	xyz(6.4995, 4.9032, 25.4097)
Luminance	0.0490 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17388C #8C6B17

analogous

#17738C #17388C #31178C

triadic

#17388C #8C1738 #388C17

tetradic

#17388C #8C1773 #8C6B17 #178C31

square

#17388C #8C1773 #8C6B17 #178C31

split-complementary

#17388C #8C3117 #738C17

monochromatic

#060E23 #0E2357 #17388C #204DC1 #3E6CDF

Accessibility & contrast

On white

10.60

#17388C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#17388C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17388C

10.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17388C	#FFFFFF	#000000	##FFFFFF
##17388C	1.00	10.60	1.98	10.60
#FFFFFF	10.60	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448F

Deuteranopia (green-blind)

#00398A

Tritanopia (blue-blind)

#004D5C

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #17388c;
/* rgb */ color: rgb(23, 56, 140);
/* oklch */ color: oklch(37.4% 0.145 264.2);

Tailwind

colors: {
  custom: {
    50: '#6a6eae',
    500: '#17388c',
    950: '#000000',
  },
}

SCSS

$custom: #17388c;
$custom-light: #6a6eae;
$custom-dark: #000000;

JSON

{
  "hex": "#17388c",
  "rgb": {
    "r": 23,
    "g": 56,
    "b": 140
  },
  "hsl": {
    "h": 223.077,
    "s": 71.779,
    "l": 31.961
  },
  "oklch": {
    "l": 0.37386,
    "c": 0.14509,
    "h": 264.2
  },
  "luminance": 0.04904
}

Semantic roles & 50–950 ramp

primary

#17388C

secondary

#BF9B3F

accent

#BB39EF

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #17388C

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

Preview Lab → · Contrast checker → · Palette generator →