#17387A#17387A

#17387A is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.8% C 0.119 H 262.2°. Best body text is #FFFFFF at 11.15:1 contrast (WCAG AA passes).

Color values

HEX	#17387A
RGB	rgb(23, 56, 122)
HSL	hsl(220, 68%, 28%)
HSV	hsv(220, 81%, 48%)
CMYK	cmyk(81.1%, 54.1%, 0%, 52.2%)
CIE-LAB	lab(25.00, 14.05, -41.04)
CIE-LCH	lch(25.00, 43.38, 288.90°)
OKLab	oklab(35.83% -0.0162 -0.1182)
OKLCH	oklch(35.83% 0.119 262.2)
XYZ	xyz(5.2791, 4.4150, 18.9825)
Luminance	0.0442 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17387A #7A5917

analogous

#17697A #17387A #27177A

triadic

#17387A #7A1738 #387A17

tetradic

#17387A #7A1769 #7A5917 #177A27

square

#17387A #7A1769 #7A5917 #177A27

split-complementary

#17387A #7A2717 #697A17

monochromatic

#050C1A #0D2047 #17387A #2150AD #336AD9

Accessibility & contrast

On white

11.15

#17387A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#17387A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17387A

11.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17387A	#FFFFFF	#000000	##FFFFFF
##17387A	1.00	11.15	1.88	11.15
#FFFFFF	11.15	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A407C

Deuteranopia (green-blind)

#003779

Tritanopia (blue-blind)

#004853

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #17387a;
/* rgb */ color: rgb(23, 56, 122);
/* oklch */ color: oklch(35.8% 0.119 262.2);

Tailwind

colors: {
  custom: {
    50: '#656ea1',
    500: '#17387a',
    950: '#000000',
  },
}

SCSS

$custom: #17387a;
$custom-light: #656ea1;
$custom-dark: #000000;

JSON

{
  "hex": "#17387a",
  "rgb": {
    "r": 23,
    "g": 56,
    "b": 122
  },
  "hsl": {
    "h": 220,
    "s": 68.276,
    "l": 28.431
  },
  "oklch": {
    "l": 0.35825,
    "c": 0.11931,
    "h": 262.2
  },
  "luminance": 0.04416
}

Semantic roles & 50–950 ramp

primary

#17387A

secondary

#AF893E

accent

#B13DEB

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #17387A

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

Preview Lab → · Contrast checker → · Palette generator →