#170E4B#170E4B

#170E4B is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.7% C 0.106 H 280.5°. Best body text is #FFFFFF at 17.49:1 contrast (WCAG AA passes).

Color values

HEX	#170E4B
RGB	rgb(23, 14, 75)
HSL	hsl(249, 69%, 17%)
HSV	hsv(249, 81%, 29%)
CMYK	cmyk(69.3%, 81.3%, 0%, 70.6%)
CIE-LAB	lab(9.03, 24.91, -36.03)
CIE-LCH	lch(9.03, 43.80, 304.66°)
OKLab	oklab(22.66% 0.0193 -0.1039)
OKLCH	oklch(22.66% 0.106 280.5)
XYZ	xyz(1.7800, 1.0041, 6.7553)
Luminance	0.0100 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170E4B #424B0E

analogous

#0E244B #170E4B #350E4B

triadic

#170E4B #4B170E #0E4B17

tetradic

#170E4B #4B0E24 #424B0E #0E4B35

square

#170E4B #4B0E24 #424B0E #0E4B35

split-complementary

#170E4B #4B350E #244B0E

monochromatic

#08051A #08051A #170E4B #27187F #3721B2

Accessibility & contrast

On white

17.49

#170E4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#170E4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170E4B

17.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170E4B	#FFFFFF	#000000	##FFFFFF
##170E4B	1.00	17.49	1.20	17.49
#FFFFFF	17.49	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C4D

Deuteranopia (green-blind)

#00174A

Tritanopia (blue-blind)

#001F2B

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #170e4b;
/* rgb */ color: rgb(23, 14, 75);
/* oklch */ color: oklch(22.7% 0.106 280.5);

Tailwind

colors: {
  custom: {
    50: '#5c4d7e',
    500: '#170e4b',
    950: '#000000',
  },
}

SCSS

$custom: #170e4b;
$custom-light: #5c4d7e;
$custom-dark: #000000;

JSON

{
  "hex": "#170e4b",
  "rgb": {
    "r": 23,
    "g": 14,
    "b": 75
  },
  "hsl": {
    "h": 248.852,
    "s": 68.539,
    "l": 17.451
  },
  "oklch": {
    "l": 0.22662,
    "c": 0.10572,
    "h": 280.5
  },
  "luminance": 0.01004
}

Semantic roles & 50–950 ramp

primary

#170E4B

secondary

#79862F

accent

#EB3CD2

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#05010A

muted

#79777C

Preview Lab

Preview with #170E4B

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

Preview Lab → · Contrast checker → · Palette generator →