#17458F#17458F

#17458F is a dark, vivid blue. Relative luminance 0.064; OKLCH L 40.5% C 0.133 H 259.8°. Best body text is #FFFFFF at 9.19:1 contrast (WCAG AA passes).

Color values

HEX	#17458F
RGB	rgb(23, 69, 143)
HSL	hsl(217, 72%, 33%)
HSV	hsv(217, 84%, 56%)
CMYK	cmyk(83.9%, 51.7%, 0%, 43.9%)
CIE-LAB	lab(30.45, 13.65, -45.30)
CIE-LCH	lch(30.45, 47.31, 286.77°)
OKLab	oklab(40.49% -0.0236 -0.1305)
OKLCH	oklch(40.49% 0.133 259.8)
XYZ	xyz(7.4376, 6.4207, 26.8286)
Luminance	0.0642 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17458F #8F6117

analogous

#17818F #17458F #25178F

triadic

#17458F #8F1745 #458F17

tetradic

#17458F #8F1781 #8F6117 #178F25

square

#17458F #8F1781 #8F6117 #178F25

split-complementary

#17458F #8F2517 #818F17

monochromatic

#061226 #0F2C5A #17458F #1F5EC4 #407EE0

Accessibility & contrast

On white

9.19

#17458F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#17458F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17458F

9.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17458F	#FFFFFF	#000000	##FFFFFF
##17458F	1.00	9.19	2.28	9.19
#FFFFFF	9.19	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#154D92

Deuteranopia (green-blind)

#00438E

Tritanopia (blue-blind)

#005763

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #17458f;
/* rgb */ color: rgb(23, 69, 143);
/* oklch */ color: oklch(40.5% 0.133 259.8);

Tailwind

colors: {
  custom: {
    50: '#6a78b0',
    500: '#17458f',
    950: '#000000',
  },
}

SCSS

$custom: #17458f;
$custom-light: #6a78b0;
$custom-dark: #000000;

JSON

{
  "hex": "#17458f",
  "rgb": {
    "r": 23,
    "g": 69,
    "b": 143
  },
  "hsl": {
    "h": 217,
    "s": 72.289,
    "l": 32.549
  },
  "oklch": {
    "l": 0.40486,
    "c": 0.13257,
    "h": 259.8
  },
  "luminance": 0.06422
}

Semantic roles & 50–950 ramp

primary

#17458F

secondary

#C19041

accent

#A939EF

background

#F6F7FA

surface

#ECEDF5

border

#C7C8CF

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #17458F

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

Preview Lab → · Contrast checker → · Palette generator →