#17317F#17317F

#17317F is a dark, vivid blue. Relative luminance 0.039; OKLCH L 34.7% C 0.136 H 265.5°. Best body text is #FFFFFF at 11.78:1 contrast (WCAG AA passes).

Color values

HEX	#17317F
RGB	rgb(23, 49, 127)
HSL	hsl(225, 69%, 29%)
HSV	hsv(225, 82%, 50%)
CMYK	cmyk(81.9%, 61.4%, 0%, 50.2%)
CIE-LAB	lab(23.37, 21.08, -46.84)
CIE-LCH	lch(23.37, 51.36, 294.23°)
OKLab	oklab(34.73% -0.0106 -0.1354)
OKLCH	oklch(34.73% 0.136 265.5)
XYZ	xyz(5.2811, 3.9105, 20.5510)
Luminance	0.0391 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17317F #7F6517

analogous

#17657F #17317F #31177F

triadic

#17317F #7F1731 #317F17

tetradic

#17317F #7F1765 #7F6517 #177F31

square

#17317F #7F1765 #7F6517 #177F31

split-complementary

#17317F #7F3117 #657F17

monochromatic

#050A1A #0E1D4B #17317F #2045B3 #365FDB

Accessibility & contrast

On white

11.78

#17317F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#17317F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17317F

11.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17317F	#FFFFFF	#000000	##FFFFFF
##17317F	1.00	11.78	1.78	11.78
#FFFFFF	11.78	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D82

Deuteranopia (green-blind)

#00337D

Tritanopia (blue-blind)

#004553

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #17317f;
/* rgb */ color: rgb(23, 49, 127);
/* oklch */ color: oklch(34.7% 0.136 265.5);

Tailwind

colors: {
  custom: {
    50: '#6768a5',
    500: '#17317f',
    950: '#000000',
  },
}

SCSS

$custom: #17317f;
$custom-light: #6768a5;
$custom-dark: #000000;

JSON

{
  "hex": "#17317f",
  "rgb": {
    "r": 23,
    "g": 49,
    "b": 127
  },
  "hsl": {
    "h": 225,
    "s": 69.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.34728,
    "c": 0.13579,
    "h": 265.5
  },
  "luminance": 0.03911
}

Semantic roles & 50–950 ramp

primary

#17317F

secondary

#B4963E

accent

#C03CEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #17317F

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

Preview Lab → · Contrast checker → · Palette generator →