#17307A#17307A

#17307A is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.1% C 0.130 H 265.6°. Best body text is #FFFFFF at 12.07:1 contrast (WCAG AA passes).

Color values

HEX	#17307A
RGB	rgb(23, 48, 122)
HSL	hsl(225, 68%, 28%)
HSV	hsv(225, 81%, 48%)
CMYK	cmyk(81.1%, 60.7%, 0%, 52.2%)
CIE-LAB	lab(22.66, 19.75, -44.85)
CIE-LCH	lch(22.66, 49.00, 293.76°)
OKLab	oklab(34.06% -0.01 -0.1295)
OKLCH	oklch(34.06% 0.13 265.6)
XYZ	xyz(4.9219, 3.7006, 18.8635)
Luminance	0.0370 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17307A #7A6117

analogous

#17617A #17307A #2F177A

triadic

#17307A #7A1730 #307A17

tetradic

#17307A #7A1761 #7A6117 #177A2F

square

#17307A #7A1761 #7A6117 #177A2F

split-complementary

#17307A #7A2F17 #617A17

monochromatic

#050A1A #0D1C47 #17307A #2144AD #335DD9

Accessibility & contrast

On white

12.07

#17307A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#17307A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17307A

12.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17307A	#FFFFFF	#000000	##FFFFFF
##17307A	1.00	12.07	1.74	12.07
#FFFFFF	12.07	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B7C

Deuteranopia (green-blind)

#003279

Tritanopia (blue-blind)

#004350

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #17307a;
/* rgb */ color: rgb(23, 48, 122);
/* oklch */ color: oklch(34.1% 0.130 265.6);

Tailwind

colors: {
  custom: {
    50: '#6667a1',
    500: '#17307a',
    950: '#000000',
  },
}

SCSS

$custom: #17307a;
$custom-light: #6667a1;
$custom-dark: #000000;

JSON

{
  "hex": "#17307a",
  "rgb": {
    "r": 23,
    "g": 48,
    "b": 122
  },
  "hsl": {
    "h": 224.848,
    "s": 68.276,
    "l": 28.431
  },
  "oklch": {
    "l": 0.34056,
    "c": 0.12993,
    "h": 265.6
  },
  "luminance": 0.03701
}

Semantic roles & 50–950 ramp

primary

#17307A

secondary

#AF923E

accent

#BF3DEB

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #17307A

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

Preview Lab → · Contrast checker → · Palette generator →