#17357B#17357B

#17357B is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.2% C 0.125 H 263.7°. Best body text is #FFFFFF at 11.47:1 contrast (WCAG AA passes).

Color values

HEX	#17357B
RGB	rgb(23, 53, 123)
HSL	hsl(222, 68%, 29%)
HSV	hsv(222, 81%, 48%)
CMYK	cmyk(81.3%, 56.9%, 0%, 51.8%)
CIE-LAB	lab(24.19, 16.60, -42.99)
CIE-LCH	lch(24.19, 46.08, 291.11°)
OKLab	oklab(35.23% -0.0137 -0.124)
OKLCH	oklch(35.23% 0.125 263.7)
XYZ	xyz(5.2003, 4.1578, 19.2635)
Luminance	0.0416 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17357B #7B5D17

analogous

#17677B #17357B #2B177B

triadic

#17357B #7B1735 #357B17

tetradic

#17357B #7B1767 #7B5D17 #177B2B

square

#17357B #7B1767 #7B5D17 #177B2B

split-complementary

#17357B #7B2B17 #677B17

monochromatic

#050B1A #0D1F47 #17357B #214BAF #3365D9

Accessibility & contrast

On white

11.47

#17357B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#17357B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17357B

11.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17357B	#FFFFFF	#000000	##FFFFFF
##17357B	1.00	11.47	1.83	11.47
#FFFFFF	11.47	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E7D

Deuteranopia (green-blind)

#00357A

Tritanopia (blue-blind)

#004652

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #17357b;
/* rgb */ color: rgb(23, 53, 123);
/* oklch */ color: oklch(35.2% 0.125 263.7);

Tailwind

colors: {
  custom: {
    50: '#666ba2',
    500: '#17357b',
    950: '#000000',
  },
}

SCSS

$custom: #17357b;
$custom-light: #666ba2;
$custom-dark: #000000;

JSON

{
  "hex": "#17357b",
  "rgb": {
    "r": 23,
    "g": 53,
    "b": 123
  },
  "hsl": {
    "h": 222,
    "s": 68.493,
    "l": 28.627
  },
  "oklch": {
    "l": 0.35234,
    "c": 0.12475,
    "h": 263.7
  },
  "luminance": 0.04158
}

Semantic roles & 50–950 ramp

primary

#17357B

secondary

#B08E3E

accent

#B73CEB

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #17357B

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

Preview Lab → · Contrast checker → · Palette generator →