#17428C#17428C

#17428C is a dark, vivid blue. Relative luminance 0.060; OKLCH L 39.6% C 0.132 H 260.6°. Best body text is #FFFFFF at 9.57:1 contrast (WCAG AA passes).

Color values

HEX	#17428C
RGB	rgb(23, 66, 140)
HSL	hsl(218, 72%, 32%)
HSV	hsv(218, 84%, 55%)
CMYK	cmyk(83.6%, 52.9%, 0%, 45.1%)
CIE-LAB	lab(29.34, 14.49, -45.25)
CIE-LCH	lch(29.34, 47.51, 287.75°)
OKLab	oklab(39.57% -0.0217 -0.1304)
OKLCH	oklch(39.57% 0.132 260.6)
XYZ	xyz(7.0335, 5.9712, 25.5877)
Luminance	0.0597 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17428C #8C6117

analogous

#177D8C #17428C #27178C

triadic

#17428C #8C1742 #428C17

tetradic

#17428C #8C177D #8C6117 #178C27

square

#17428C #8C177D #8C6117 #178C27

split-complementary

#17428C #8C2717 #7D8C17

monochromatic

#061023 #0E2957 #17428C #205BC1 #3E79DF

Accessibility & contrast

On white

9.57

#17428C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#17428C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17428C

9.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17428C	#FFFFFF	#000000	##FFFFFF
##17428C	1.00	9.57	2.19	9.57
#FFFFFF	9.57	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F4B8F

Deuteranopia (green-blind)

#00408B

Tritanopia (blue-blind)

#005460

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #17428c;
/* rgb */ color: rgb(23, 66, 140);
/* oklch */ color: oklch(39.6% 0.132 260.6);

Tailwind

colors: {
  custom: {
    50: '#6975ae',
    500: '#17428c',
    950: '#000000',
  },
}

SCSS

$custom: #17428c;
$custom-light: #6975ae;
$custom-dark: #000000;

JSON

{
  "hex": "#17428c",
  "rgb": {
    "r": 23,
    "g": 66,
    "b": 140
  },
  "hsl": {
    "h": 217.949,
    "s": 71.779,
    "l": 31.961
  },
  "oklch": {
    "l": 0.39567,
    "c": 0.13217,
    "h": 260.6
  },
  "luminance": 0.05972
}

Semantic roles & 50–950 ramp

primary

#17428C

secondary

#BF903F

accent

#AC39EF

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #17428C

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

Preview Lab → · Contrast checker → · Palette generator →