#17305C#17305C

#17305C is a dark, moderate blue. Relative luminance 0.031; OKLCH L 31.5% C 0.085 H 260.8°. Best body text is #FFFFFF at 13.01:1 contrast (WCAG AA passes).

Color values

HEX	#17305C
RGB	rgb(23, 48, 92)
HSL	hsl(218, 60%, 23%)
HSV	hsv(218, 75%, 36%)
CMYK	cmyk(75%, 47.8%, 0%, 63.9%)
CIE-LAB	lab(20.32, 7.26, -29.22)
CIE-LCH	lch(20.32, 30.10, 283.96°)
OKLab	oklab(31.54% -0.0135 -0.0836)
OKLCH	oklch(31.54% 0.085 260.8)
XYZ	xyz(3.3414, 3.0684, 10.5393)
Luminance	0.0307 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17305C #5C4317

analogous

#17525C #17305C #21175C

triadic

#17305C #5C1730 #305C17

tetradic

#17305C #5C1752 #5C4317 #175C21

square

#17305C #5C1752 #5C4317 #175C21

split-complementary

#17305C #5C2117 #525C17

monochromatic

#060D18 #0B162B #17305C #234A8D #2F63BE

Accessibility & contrast

On white

13.01

#17305C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#17305C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17305C

13.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17305C	#FFFFFF	#000000	##FFFFFF
##17305C	1.00	13.01	1.61	13.01
#FFFFFF	13.01	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A345E

Deuteranopia (green-blind)

#0D2E5B

Tritanopia (blue-blind)

#003A41

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #17305c;
/* rgb */ color: rgb(23, 48, 92);
/* oklch */ color: oklch(31.5% 0.085 260.8);

Tailwind

colors: {
  custom: {
    50: '#5e678a',
    500: '#17305c',
    950: '#000000',
  },
}

SCSS

$custom: #17305c;
$custom-light: #5e678a;
$custom-dark: #000000;

JSON

{
  "hex": "#17305c",
  "rgb": {
    "r": 23,
    "g": 48,
    "b": 92
  },
  "hsl": {
    "h": 218.261,
    "s": 60,
    "l": 22.549
  },
  "oklch": {
    "l": 0.31537,
    "c": 0.08467,
    "h": 260.8
  },
  "luminance": 0.03069
}

Semantic roles & 50–950 ramp

primary

#17305C

secondary

#93733C

accent

#AA45E3

background

#F5F6F8

surface

#E9EBF0

border

#C5C6CB

text

#05060C

muted

#797A7D

Preview Lab

Preview with #17305C

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

Preview Lab → · Contrast checker → · Palette generator →