#17305D#17305D

#17305D is a dark, moderate blue. Relative luminance 0.031; OKLCH L 31.6% C 0.086 H 261.1°. Best body text is #FFFFFF at 12.99:1 contrast (WCAG AA passes).

Color values

HEX	#17305D
RGB	rgb(23, 48, 93)
HSL	hsl(219, 60%, 23%)
HSV	hsv(219, 75%, 36%)
CMYK	cmyk(75.3%, 48.4%, 0%, 63.5%)
CIE-LAB	lab(20.39, 7.68, -29.76)
CIE-LCH	lch(20.39, 30.74, 284.47°)
OKLab	oklab(31.61% -0.0133 -0.0852)
OKLCH	oklch(31.61% 0.086 261.1)
XYZ	xyz(3.3854, 3.0860, 10.7711)
Luminance	0.0309 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17305D #5D4417

analogous

#17535D #17305D #21175D

triadic

#17305D #5D1730 #305D17

tetradic

#17305D #5D1753 #5D4417 #175D21

square

#17305D #5D1753 #5D4417 #175D21

split-complementary

#17305D #5D2117 #535D17

monochromatic

#060D19 #0B172C #17305D #23498E #2F63BF

Accessibility & contrast

On white

12.99

#17305D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#17305D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17305D

12.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17305D	#FFFFFF	#000000	##FFFFFF
##17305D	1.00	12.99	1.62	12.99
#FFFFFF	12.99	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#19355F

Deuteranopia (green-blind)

#0C2E5C

Tritanopia (blue-blind)

#003A42

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #17305d;
/* rgb */ color: rgb(23, 48, 93);
/* oklch */ color: oklch(31.6% 0.086 261.1);

Tailwind

colors: {
  custom: {
    50: '#5e678b',
    500: '#17305d',
    950: '#000000',
  },
}

SCSS

$custom: #17305d;
$custom-light: #5e678b;
$custom-dark: #000000;

JSON

{
  "hex": "#17305d",
  "rgb": {
    "r": 23,
    "g": 48,
    "b": 93
  },
  "hsl": {
    "h": 218.571,
    "s": 60.345,
    "l": 22.745
  },
  "oklch": {
    "l": 0.31613,
    "c": 0.08623,
    "h": 261.1
  },
  "luminance": 0.03086
}

Semantic roles & 50–950 ramp

primary

#17305D

secondary

#94743C

accent

#AB44E3

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05060C

muted

#797A7D

Preview Lab

Preview with #17305D

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

Preview Lab → · Contrast checker → · Palette generator →