#171E56#171E56

#171E56 is a dark, moderate blue. Relative luminance 0.018; OKLCH L 26.8% C 0.101 H 272.2°. Best body text is #FFFFFF at 15.48:1 contrast (WCAG AA passes).

Color values

HEX	#171E56
RGB	rgb(23, 30, 86)
HSL	hsl(233, 58%, 21%)
HSV	hsv(233, 73%, 34%)
CMYK	cmyk(73.3%, 65.1%, 0%, 66.3%)
CIE-LAB	lab(14.30, 18.03, -34.93)
CIE-LCH	lch(14.30, 39.30, 297.30°)
OKLab	oklab(26.83% 0.0039 -0.1007)
OKLCH	oklch(26.83% 0.101 272.2)
XYZ	xyz(2.4968, 1.7824, 9.0147)
Luminance	0.0178 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171E56 #564F17

analogous

#173E56 #171E56 #301756

triadic

#171E56 #56171E #1E5617

tetradic

#171E56 #56173E #564F17 #175630

square

#171E56 #56173E #564F17 #175630

split-complementary

#171E56 #563017 #3E5617

monochromatic

#060818 #0A0D26 #171E56 #242F86 #3140B7

Accessibility & contrast

On white

15.48

#171E56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#171E56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171E56

15.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171E56	#FFFFFF	#000000	##FFFFFF
##171E56	1.00	15.48	1.36	15.48
#FFFFFF	15.48	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002758

Deuteranopia (green-blind)

#002155

Tritanopia (blue-blind)

#002C36

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #171e56;
/* rgb */ color: rgb(23, 30, 86);
/* oklch */ color: oklch(26.8% 0.101 272.2);

Tailwind

colors: {
  custom: {
    50: '#5d5986',
    500: '#171e56',
    950: '#000000',
  },
}

SCSS

$custom: #171e56;
$custom-light: #5d5986;
$custom-dark: #000000;

JSON

{
  "hex": "#171e56",
  "rgb": {
    "r": 23,
    "g": 30,
    "b": 86
  },
  "hsl": {
    "h": 233.333,
    "s": 57.798,
    "l": 21.373
  },
  "oklch": {
    "l": 0.26833,
    "c": 0.10075,
    "h": 272.2
  },
  "luminance": 0.01783
}

Semantic roles & 50–950 ramp

primary

#171E56

secondary

#8D843C

accent

#D047E1

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #171E56

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

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