#17357E#17357E

#17357E is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.5% C 0.129 H 264.0°. Best body text is #FFFFFF at 11.37:1 contrast (WCAG AA passes).

Color values

HEX	#17357E
RGB	rgb(23, 53, 126)
HSL	hsl(223, 69%, 29%)
HSV	hsv(223, 82%, 49%)
CMYK	cmyk(81.7%, 57.9%, 0%, 50.6%)
CIE-LAB	lab(24.43, 17.84, -44.49)
CIE-LCH	lch(24.43, 47.93, 291.85°)
OKLab	oklab(35.49% -0.0134 -0.1284)
OKLCH	oklch(35.49% 0.129 264)
XYZ	xyz(5.3910, 4.2341, 20.2678)
Luminance	0.0423 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17357E #7E6017

analogous

#17697E #17357E #2C177E

triadic

#17357E #7E1735 #357E17

tetradic

#17357E #7E1769 #7E6017 #177E2C

square

#17357E #7E1769 #7E6017 #177E2C

split-complementary

#17357E #7E2C17 #697E17

monochromatic

#050B1A #0E1F4A #17357E #204BB2 #3565DA

Accessibility & contrast

On white

11.37

#17357E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#17357E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17357E

11.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17357E	#FFFFFF	#000000	##FFFFFF
##17357E	1.00	11.37	1.85	11.37
#FFFFFF	11.37	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F81

Deuteranopia (green-blind)

#00357D

Tritanopia (blue-blind)

#004754

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #17357e;
/* rgb */ color: rgb(23, 53, 126);
/* oklch */ color: oklch(35.5% 0.129 264.0);

Tailwind

colors: {
  custom: {
    50: '#666ba4',
    500: '#17357e',
    950: '#000000',
  },
}

SCSS

$custom: #17357e;
$custom-light: #666ba4;
$custom-dark: #000000;

JSON

{
  "hex": "#17357e",
  "rgb": {
    "r": 23,
    "g": 53,
    "b": 126
  },
  "hsl": {
    "h": 222.524,
    "s": 69.128,
    "l": 29.216
  },
  "oklch": {
    "l": 0.35495,
    "c": 0.1291,
    "h": 264
  },
  "luminance": 0.04235
}

Semantic roles & 50–950 ramp

primary

#17357E

secondary

#B3913E

accent

#B93CEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #17357E

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

Preview Lab → · Contrast checker → · Palette generator →