#171E43#171E43

#171E43 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.1% C 0.070 H 272.4°. Best body text is #FFFFFF at 16.11:1 contrast (WCAG AA passes).

Color values

HEX	#171E43
RGB	rgb(23, 30, 67)
HSL	hsl(230, 49%, 18%)
HSV	hsv(230, 66%, 26%)
CMYK	cmyk(65.7%, 55.2%, 0%, 73.7%)
CIE-LAB	lab(12.71, 10.28, -24.46)
CIE-LCH	lch(12.71, 26.53, 292.80°)
OKLab	oklab(25.14% 0.0029 -0.0699)
OKLCH	oklch(25.14% 0.07 272.4)
XYZ	xyz(1.8304, 1.5158, 5.5052)
Luminance	0.0152 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171E43 #433C17

analogous

#173443 #171E43 #261743

triadic

#171E43 #43171E #1E4317

tetradic

#171E43 #431734 #433C17 #174326

square

#171E43 #431734 #433C17 #174326

split-complementary

#171E43 #432617 #344317

monochromatic

#080A17 #080A17 #171E43 #273271 #36479E

Accessibility & contrast

On white

16.11

#171E43 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#171E43 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171E43

16.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171E43	#FFFFFF	#000000	##FFFFFF
##171E43	1.00	16.11	1.30	16.11
#FFFFFF	16.11	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B2344

Deuteranopia (green-blind)

#051F42

Tritanopia (blue-blind)

#00262D

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #171e43;
/* rgb */ color: rgb(23, 30, 67);
/* oklch */ color: oklch(25.1% 0.070 272.4);

Tailwind

colors: {
  custom: {
    50: '#595977',
    500: '#171e43',
    950: '#000000',
  },
}

SCSS

$custom: #171e43;
$custom-light: #595977;
$custom-dark: #000000;

JSON

{
  "hex": "#171e43",
  "rgb": {
    "r": 23,
    "g": 30,
    "b": 67
  },
  "hsl": {
    "h": 230.455,
    "s": 48.889,
    "l": 17.647
  },
  "oklch": {
    "l": 0.25135,
    "c": 0.06994,
    "h": 272.4
  },
  "luminance": 0.01516
}

Semantic roles & 50–950 ramp

primary

#171E43

secondary

#7A703C

accent

#C34FD8

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040309

muted

#79787B

Preview Lab

Preview with #171E43

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

Preview Lab → · Contrast checker → · Palette generator →