#17377A#17377A

#17377A is a dark, vivid blue. Relative luminance 0.043; OKLCH L 35.6% C 0.121 H 262.7°. Best body text is #FFFFFF at 11.27:1 contrast (WCAG AA passes).

Color values

HEX	#17377A
RGB	rgb(23, 55, 122)
HSL	hsl(221, 68%, 28%)
HSV	hsv(221, 81%, 48%)
CMYK	cmyk(81.1%, 54.9%, 0%, 52.2%)
CIE-LAB	lab(24.70, 14.76, -41.52)
CIE-LCH	lch(24.70, 44.07, 289.57°)
OKLab	oklab(35.6% -0.0153 -0.1196)
OKLCH	oklch(35.6% 0.121 262.7)
XYZ	xyz(5.2311, 4.3191, 18.9665)
Luminance	0.0432 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17377A #7A5A17

analogous

#17687A #17377A #28177A

triadic

#17377A #7A1737 #377A17

tetradic

#17377A #7A1768 #7A5A17 #177A28

square

#17377A #7A1768 #7A5A17 #177A28

split-complementary

#17377A #7A2817 #687A17

monochromatic

#050C1A #0D2047 #17377A #214EAD #3368D9

Accessibility & contrast

On white

11.27

#17377A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#17377A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17377A

11.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17377A	#FFFFFF	#000000	##FFFFFF
##17377A	1.00	11.27	1.86	11.27
#FFFFFF	11.27	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#053F7C

Deuteranopia (green-blind)

#003679

Tritanopia (blue-blind)

#004753

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #17377a;
/* rgb */ color: rgb(23, 55, 122);
/* oklch */ color: oklch(35.6% 0.121 262.7);

Tailwind

colors: {
  custom: {
    50: '#656da1',
    500: '#17377a',
    950: '#000000',
  },
}

SCSS

$custom: #17377a;
$custom-light: #656da1;
$custom-dark: #000000;

JSON

{
  "hex": "#17377a",
  "rgb": {
    "r": 23,
    "g": 55,
    "b": 122
  },
  "hsl": {
    "h": 220.606,
    "s": 68.276,
    "l": 28.431
  },
  "oklch": {
    "l": 0.35598,
    "c": 0.12063,
    "h": 262.7
  },
  "luminance": 0.0432
}

Semantic roles & 50–950 ramp

primary

#17377A

secondary

#AF8A3E

accent

#B33DEB

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#06070F

muted

#7A7A7F

Preview Lab

Preview with #17377A

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

Preview Lab → · Contrast checker → · Palette generator →