#17458B#17458B

#17458B is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.2% C 0.127 H 259.0°. Best body text is #FFFFFF at 9.29:1 contrast (WCAG AA passes).

Color values

HEX	#17458B
RGB	rgb(23, 69, 139)
HSL	hsl(216, 72%, 32%)
HSV	hsv(216, 83%, 55%)
CMYK	cmyk(83.5%, 50.4%, 0%, 45.5%)
CIE-LAB	lab(30.16, 12.00, -43.31)
CIE-LCH	lch(30.16, 44.94, 285.49°)
OKLab	oklab(40.17% -0.0242 -0.1246)
OKLCH	oklch(40.17% 0.127 259)
XYZ	xyz(7.1400, 6.3016, 25.2611)
Luminance	0.0630 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17458B #8B5D17

analogous

#177F8B #17458B #23178B

triadic

#17458B #8B1745 #458B17

tetradic

#17458B #8B177F #8B5D17 #178B23

square

#17458B #8B177F #8B5D17 #178B23

split-complementary

#17458B #8B2317 #7F8B17

monochromatic

#061122 #0E2B56 #17458B #205FC0 #3D7DDF

Accessibility & contrast

On white

9.29

#17458B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#17458B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17458B

9.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17458B	#FFFFFF	#000000	##FFFFFF
##17458B	1.00	9.29	2.26	9.29
#FFFFFF	9.29	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B4D8E

Deuteranopia (green-blind)

#00428A

Tritanopia (blue-blind)

#005661

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #17458b;
/* rgb */ color: rgb(23, 69, 139);
/* oklch */ color: oklch(40.2% 0.127 259.0);

Tailwind

colors: {
  custom: {
    50: '#6978ad',
    500: '#17458b',
    950: '#000000',
  },
}

SCSS

$custom: #17458b;
$custom-light: #6978ad;
$custom-dark: #000000;

JSON

{
  "hex": "#17458b",
  "rgb": {
    "r": 23,
    "g": 69,
    "b": 139
  },
  "hsl": {
    "h": 216.207,
    "s": 71.605,
    "l": 31.765
  },
  "oklch": {
    "l": 0.40173,
    "c": 0.12692,
    "h": 259
  },
  "luminance": 0.06302
}

Semantic roles & 50–950 ramp

primary

#17458B

secondary

#BF8C3F

accent

#A739EE

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #17458B

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

Preview Lab → · Contrast checker → · Palette generator →