#171E54#171E54

#171E54 is a dark, moderate blue. Relative luminance 0.018; OKLCH L 26.6% C 0.098 H 272.3°. Best body text is #FFFFFF at 15.55:1 contrast (WCAG AA passes).

Color values

HEX	#171E54
RGB	rgb(23, 30, 84)
HSL	hsl(233, 57%, 21%)
HSV	hsv(233, 73%, 33%)
CMYK	cmyk(72.6%, 64.3%, 0%, 67.1%)
CIE-LAB	lab(14.12, 17.21, -33.87)
CIE-LCH	lch(14.12, 37.99, 296.94°)
OKLab	oklab(26.64% 0.004 -0.0976)
OKLCH	oklch(26.64% 0.098 272.3)
XYZ	xyz(2.4173, 1.7506, 8.5963)
Luminance	0.0175 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171E54 #544D17

analogous

#173C54 #171E54 #2E1754

triadic

#171E54 #54171E #1E5417

tetradic

#171E54 #54173C #544D17 #17542E

square

#171E54 #54173C #544D17 #17542E

split-complementary

#171E54 #542E17 #3C5417

monochromatic

#070918 #0A0D24 #171E54 #242F84 #3140B4

Accessibility & contrast

On white

15.55

#171E54 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#171E54 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171E54

15.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171E54	#FFFFFF	#000000	##FFFFFF
##171E54	1.00	15.55	1.35	15.55
#FFFFFF	15.55	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002756

Deuteranopia (green-blind)

#002153

Tritanopia (blue-blind)

#002B35

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #171e54;
/* rgb */ color: rgb(23, 30, 84);
/* oklch */ color: oklch(26.6% 0.098 272.3);

Tailwind

colors: {
  custom: {
    50: '#5d5985',
    500: '#171e54',
    950: '#000000',
  },
}

SCSS

$custom: #171e54;
$custom-light: #5d5985;
$custom-dark: #000000;

JSON

{
  "hex": "#171e54",
  "rgb": {
    "r": 23,
    "g": 30,
    "b": 84
  },
  "hsl": {
    "h": 233.115,
    "s": 57.009,
    "l": 20.98
  },
  "oklch": {
    "l": 0.26642,
    "c": 0.09764,
    "h": 272.3
  },
  "luminance": 0.01751
}

Semantic roles & 50–950 ramp

primary

#171E54

secondary

#8B823C

accent

#CF48E0

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #171E54

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

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