#17307D#17307D

#17307D is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.3% C 0.134 H 265.8°. Best body text is #FFFFFF at 11.96:1 contrast (WCAG AA passes).

Color values

HEX	#17307D
RGB	rgb(23, 48, 125)
HSL	hsl(225, 69%, 29%)
HSV	hsv(225, 82%, 49%)
CMYK	cmyk(81.6%, 61.6%, 0%, 51%)
CIE-LAB	lab(22.92, 20.97, -46.32)
CIE-LCH	lch(22.92, 50.85, 294.36°)
OKLab	oklab(34.33% -0.0099 -0.1339)
OKLCH	oklch(34.33% 0.134 265.8)
XYZ	xyz(5.1107, 3.7761, 19.8576)
Luminance	0.0378 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17307D #7D6417

analogous

#17637D #17307D #31177D

triadic

#17307D #7D1730 #307D17

tetradic

#17307D #7D1763 #7D6417 #177D31

square

#17307D #7D1763 #7D6417 #177D31

split-complementary

#17307D #7D3117 #637D17

monochromatic

#050A1A #0D1C49 #17307D #2144B1 #355DDA

Accessibility & contrast

On white

11.96

#17307D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#17307D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17307D

11.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17307D	#FFFFFF	#000000	##FFFFFF
##17307D	1.00	11.96	1.76	11.96
#FFFFFF	11.96	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C80

Deuteranopia (green-blind)

#00327C

Tritanopia (blue-blind)

#004451

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #17307d;
/* rgb */ color: rgb(23, 48, 125);
/* oklch */ color: oklch(34.3% 0.134 265.8);

Tailwind

colors: {
  custom: {
    50: '#6667a3',
    500: '#17307d',
    950: '#000000',
  },
}

SCSS

$custom: #17307d;
$custom-light: #6667a3;
$custom-dark: #000000;

JSON

{
  "hex": "#17307d",
  "rgb": {
    "r": 23,
    "g": 48,
    "b": 125
  },
  "hsl": {
    "h": 225.294,
    "s": 68.919,
    "l": 29.02
  },
  "oklch": {
    "l": 0.34333,
    "c": 0.13424,
    "h": 265.8
  },
  "luminance": 0.03777
}

Semantic roles & 50–950 ramp

primary

#17307D

secondary

#B2953E

accent

#C13CEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #17307D

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

Preview Lab → · Contrast checker → · Palette generator →