#17315A#17315A

#17315A is a dark, moderate blue. Relative luminance 0.031; OKLCH L 31.6% C 0.080 H 259.2°. Best body text is #FFFFFF at 12.94:1 contrast (WCAG AA passes).

Color values

HEX	#17315A
RGB	rgb(23, 49, 90)
HSL	hsl(217, 59%, 22%)
HSV	hsv(217, 74%, 35%)
CMYK	cmyk(74.4%, 45.6%, 0%, 64.7%)
CIE-LAB	lab(20.50, 5.71, -27.59)
CIE-LCH	lch(20.50, 28.18, 281.69°)
OKLab	oklab(31.64% -0.015 -0.0788)
OKLCH	oklch(31.64% 0.08 259.2)
XYZ	xyz(3.2965, 3.1166, 10.0987)
Luminance	0.0312 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17315A #5A4017

analogous

#17535A #17315A #1E175A

triadic

#17315A #5A1731 #315A17

tetradic

#17315A #5A1753 #5A4017 #175A1E

square

#17315A #5A1753 #5A4017 #175A1E

split-complementary

#17315A #5A1E17 #535A17

monochromatic

#060D18 #0B1629 #17315A #234C8B #3066BB

Accessibility & contrast

On white

12.94

#17315A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#17315A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17315A

12.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17315A	#FFFFFF	#000000	##FFFFFF
##17315A	1.00	12.94	1.62	12.94
#FFFFFF	12.94	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E355C

Deuteranopia (green-blind)

#122F59

Tritanopia (blue-blind)

#003A41

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #17315a;
/* rgb */ color: rgb(23, 49, 90);
/* oklch */ color: oklch(31.6% 0.080 259.2);

Tailwind

colors: {
  custom: {
    50: '#5d6889',
    500: '#17315a',
    950: '#000000',
  },
}

SCSS

$custom: #17315a;
$custom-light: #5d6889;
$custom-dark: #000000;

JSON

{
  "hex": "#17315a",
  "rgb": {
    "r": 23,
    "g": 49,
    "b": 90
  },
  "hsl": {
    "h": 216.716,
    "s": 59.292,
    "l": 22.157
  },
  "oklch": {
    "l": 0.3164,
    "c": 0.08021,
    "h": 259.2
  },
  "luminance": 0.03117
}

Semantic roles & 50–950 ramp

primary

#17315A

secondary

#91703C

accent

#A545E2

background

#F5F6F8

surface

#E9EBF0

border

#C5C6CB

text

#05060B

muted

#797A7C

Preview Lab

Preview with #17315A

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

Preview Lab → · Contrast checker → · Palette generator →