#170E57#170E57

#170E57 is a very dark, vivid blue. Relative luminance 0.012; OKLCH L 24.1% C 0.122 H 277.5°. Best body text is #FFFFFF at 16.98:1 contrast (WCAG AA passes).

Color values

HEX	#170E57
RGB	rgb(23, 14, 87)
HSL	hsl(247, 72%, 20%)
HSV	hsv(247, 84%, 34%)
CMYK	cmyk(73.6%, 83.9%, 0%, 65.9%)
CIE-LAB	lab(10.44, 29.17, -41.94)
CIE-LCH	lch(10.44, 51.09, 304.82°)
OKLab	oklab(24.08% 0.016 -0.1212)
OKLCH	oklch(24.08% 0.122 277.5)
XYZ	xyz(2.2301, 1.1842, 9.1260)
Luminance	0.0118 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170E57 #4E570E

analogous

#0E2A57 #170E57 #3B0E57

triadic

#170E57 #57170E #0E5717

tetradic

#170E57 #570E2A #4E570E #0E573B

square

#170E57 #570E2A #4E570E #0E573B

split-complementary

#170E57 #573B0E #2A570E

monochromatic

#07041A #090622 #170E57 #25168C #331FC0

Accessibility & contrast

On white

16.98

#170E57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#170E57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170E57

16.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170E57	#FFFFFF	#000000	##FFFFFF
##170E57	1.00	16.98	1.24	16.98
#FFFFFF	16.98	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001F59

Deuteranopia (green-blind)

#001956

Tritanopia (blue-blind)

#002432

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #170e57;
/* rgb */ color: rgb(23, 14, 87);
/* oklch */ color: oklch(24.1% 0.122 277.5);

Tailwind

colors: {
  custom: {
    50: '#604e87',
    500: '#170e57',
    950: '#000000',
  },
}

SCSS

$custom: #170e57;
$custom-light: #604e87;
$custom-dark: #000000;

JSON

{
  "hex": "#170e57",
  "rgb": {
    "r": 23,
    "g": 14,
    "b": 87
  },
  "hsl": {
    "h": 247.397,
    "s": 72.277,
    "l": 19.804
  },
  "oklch": {
    "l": 0.24079,
    "c": 0.12223,
    "h": 277.5
  },
  "luminance": 0.01184
}

Semantic roles & 50–950 ramp

primary

#170E57

secondary

#859130

accent

#EF39D9

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#05020B

muted

#7A787C

Preview Lab

Preview with #170E57

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

Preview Lab → · Contrast checker → · Palette generator →