#170E55#170E55

#170E55 is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.8% C 0.120 H 278.0°. Best body text is #FFFFFF at 17.07:1 contrast (WCAG AA passes).

Color values

HEX	#170E55
RGB	rgb(23, 14, 85)
HSL	hsl(248, 72%, 19%)
HSV	hsv(248, 84%, 33%)
CMYK	cmyk(72.9%, 83.5%, 0%, 66.7%)
CIE-LAB	lab(10.20, 28.48, -40.98)
CIE-LCH	lch(10.20, 49.90, 304.80°)
OKLab	oklab(23.84% 0.0166 -0.1184)
OKLCH	oklch(23.84% 0.12 278)
XYZ	xyz(2.1496, 1.1519, 8.7016)
Luminance	0.0115 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170E55 #4C550E

analogous

#0E2955 #170E55 #3B0E55

triadic

#170E55 #55170E #0E5517

tetradic

#170E55 #550E29 #4C550E #0E553B

square

#170E55 #550E29 #4C550E #0E553B

split-complementary

#170E55 #553B0E #29550E

monochromatic

#07041A #090520 #170E55 #25178A #331FBE

Accessibility & contrast

On white

17.07

#170E55 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#170E55 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170E55

17.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170E55	#FFFFFF	#000000	##FFFFFF
##170E55	1.00	17.07	1.23	17.07
#FFFFFF	17.07	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001F57

Deuteranopia (green-blind)

#001954

Tritanopia (blue-blind)

#002331

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #170e55;
/* rgb */ color: rgb(23, 14, 85);
/* oklch */ color: oklch(23.8% 0.120 278.0);

Tailwind

colors: {
  custom: {
    50: '#5f4e86',
    500: '#170e55',
    950: '#000000',
  },
}

SCSS

$custom: #170e55;
$custom-light: #5f4e86;
$custom-dark: #000000;

JSON

{
  "hex": "#170e55",
  "rgb": {
    "r": 23,
    "g": 14,
    "b": 85
  },
  "hsl": {
    "h": 247.606,
    "s": 71.717,
    "l": 19.412
  },
  "oklch": {
    "l": 0.23838,
    "c": 0.11953,
    "h": 278
  },
  "luminance": 0.01152
}

Semantic roles & 50–950 ramp

primary

#170E55

secondary

#838F30

accent

#EE39D7

background

#F5F4F8

surface

#EAE7EF

border

#C6C3CA

text

#05020B

muted

#79787C

Preview Lab

Preview with #170E55

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

Preview Lab → · Contrast checker → · Palette generator →