#171E70#171E70

#171E70 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.5% C 0.139 H 270.8°. Best body text is #FFFFFF at 14.42:1 contrast (WCAG AA passes).

Color values

HEX	#171E70
RGB	rgb(23, 30, 112)
HSL	hsl(235, 66%, 26%)
HSV	hsv(235, 79%, 44%)
CMYK	cmyk(79.5%, 73.2%, 0%, 56.1%)
CIE-LAB	lab(16.89, 28.30, -47.87)
CIE-LCH	lch(16.89, 55.61, 300.59°)
OKLab	oklab(29.52% 0.0019 -0.1386)
OKLCH	oklch(29.52% 0.139 270.8)
XYZ	xyz(3.7413, 2.2802, 15.5690)
Luminance	0.0228 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171E70 #706917

analogous

#174B70 #171E70 #3D1770

triadic

#171E70 #70171E #1E7017

tetradic

#171E70 #70174B #706917 #17703D

square

#171E70 #70174B #706917 #17703D

split-complementary

#171E70 #703D17 #4B7017

monochromatic

#050719 #0D103D #171E70 #212CA3 #2D3BD4

Accessibility & contrast

On white

14.42

#171E70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#171E70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171E70

14.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171E70	#FFFFFF	#000000	##FFFFFF
##171E70	1.00	14.42	1.46	14.42
#FFFFFF	14.42	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E72

Deuteranopia (green-blind)

#00256F

Tritanopia (blue-blind)

#003544

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #171e70;
/* rgb */ color: rgb(23, 30, 112);
/* oklch */ color: oklch(29.5% 0.139 270.8);

Tailwind

colors: {
  custom: {
    50: '#655a9a',
    500: '#171e70',
    950: '#000000',
  },
}

SCSS

$custom: #171e70;
$custom-light: #655a9a;
$custom-dark: #000000;

JSON

{
  "hex": "#171e70",
  "rgb": {
    "r": 23,
    "g": 30,
    "b": 112
  },
  "hsl": {
    "h": 235.281,
    "s": 65.926,
    "l": 26.471
  },
  "oklch": {
    "l": 0.29521,
    "c": 0.13857,
    "h": 270.8
  },
  "luminance": 0.02281
}

Semantic roles & 50–950 ramp

primary

#171E70

secondary

#A69E3D

accent

#DC3FE9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040E

muted

#7A797E

Preview Lab

Preview with #171E70

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

Preview Lab → · Contrast checker → · Palette generator →