#17318F#17318F

#17318F is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.3% C 0.158 H 266.2°. Best body text is #FFFFFF at 11.22:1 contrast (WCAG AA passes).

Color values

HEX	#17318F
RGB	rgb(23, 49, 143)
HSL	hsl(227, 72%, 33%)
HSV	hsv(227, 84%, 56%)
CMYK	cmyk(83.9%, 65.7%, 0%, 43.9%)
CIE-LAB	lab(24.83, 27.50, -54.45)
CIE-LCH	lch(24.83, 61.00, 296.80°)
OKLab	oklab(36.26% -0.0105 -0.1577)
OKLCH	oklch(36.26% 0.158 266.2)
XYZ	xyz(6.4078, 4.3612, 26.4853)
Luminance	0.0436 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17318F #8F7517

analogous

#176D8F #17318F #39178F

triadic

#17318F #8F1731 #318F17

tetradic

#17318F #8F176D #8F7517 #178F39

square

#17318F #8F176D #8F7517 #178F39

split-complementary

#17318F #8F3917 #6D8F17

monochromatic

#060D26 #0F1F5A #17318F #1F43C4 #4063E0

Accessibility & contrast

On white

11.22

#17318F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#17318F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17318F

11.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17318F	#FFFFFF	#000000	##FFFFFF
##17318F	1.00	11.22	1.87	11.22
#FFFFFF	11.22	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004192

Deuteranopia (green-blind)

#00358D

Tritanopia (blue-blind)

#004A5B

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #17318f;
/* rgb */ color: rgb(23, 49, 143);
/* oklch */ color: oklch(36.3% 0.158 266.2);

Tailwind

colors: {
  custom: {
    50: '#6b68b1',
    500: '#17318f',
    950: '#000000',
  },
}

SCSS

$custom: #17318f;
$custom-light: #6b68b1;
$custom-dark: #000000;

JSON

{
  "hex": "#17318f",
  "rgb": {
    "r": 23,
    "g": 49,
    "b": 143
  },
  "hsl": {
    "h": 227,
    "s": 72.289,
    "l": 32.549
  },
  "oklch": {
    "l": 0.3626,
    "c": 0.15802,
    "h": 266.2
  },
  "luminance": 0.04362
}

Semantic roles & 50–950 ramp

primary

#17318F

secondary

#C1A541

accent

#C839EF

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #17318F

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

Preview Lab → · Contrast checker → · Palette generator →