#171E5C#171E5C

#171E5C is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.4% C 0.110 H 271.9°. Best body text is #FFFFFF at 15.25:1 contrast (WCAG AA passes).

Color values

HEX	#171E5C
RGB	rgb(23, 30, 92)
HSL	hsl(234, 60%, 23%)
HSV	hsv(234, 75%, 36%)
CMYK	cmyk(75%, 67.4%, 0%, 63.9%)
CIE-LAB	lab(14.86, 20.45, -38.04)
CIE-LCH	lch(14.86, 43.19, 298.26°)
OKLab	oklab(27.42% 0.0037 -0.1098)
OKLCH	oklch(27.42% 0.11 271.9)
XYZ	xyz(2.7487, 1.8831, 10.3418)
Luminance	0.0188 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171E5C #5C5517

analogous

#17405C #171E5C #32175C

triadic

#171E5C #5C171E #1E5C17

tetradic

#171E5C #5C1740 #5C5517 #175C32

square

#171E5C #5C1740 #5C5517 #175C32

split-complementary

#171E5C #5C3217 #405C17

monochromatic

#060818 #0B0E2B #171E5C #232E8D #2F3EBE

Accessibility & contrast

On white

15.25

#171E5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#171E5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171E5C

15.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171E5C	#FFFFFF	#000000	##FFFFFF
##171E5C	1.00	15.25	1.38	15.25
#FFFFFF	15.25	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00295E

Deuteranopia (green-blind)

#00225B

Tritanopia (blue-blind)

#002E39

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #171e5c;
/* rgb */ color: rgb(23, 30, 92);
/* oklch */ color: oklch(27.4% 0.110 271.9);

Tailwind

colors: {
  custom: {
    50: '#5f598b',
    500: '#171e5c',
    950: '#000000',
  },
}

SCSS

$custom: #171e5c;
$custom-light: #5f598b;
$custom-dark: #000000;

JSON

{
  "hex": "#171e5c",
  "rgb": {
    "r": 23,
    "g": 30,
    "b": 92
  },
  "hsl": {
    "h": 233.913,
    "s": 60,
    "l": 22.549
  },
  "oklch": {
    "l": 0.27421,
    "c": 0.10988,
    "h": 271.9
  },
  "luminance": 0.01883
}

Semantic roles & 50–950 ramp

primary

#171E5C

secondary

#938A3C

accent

#D345E3

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #171E5C

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

Preview Lab → · Contrast checker → · Palette generator →