#171E7B#171E7B

#171E7B is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.7% C 0.153 H 270.1°. Best body text is #FFFFFF at 13.92:1 contrast (WCAG AA passes).

Color values

HEX	#171E7B
RGB	rgb(23, 30, 123)
HSL	hsl(236, 68%, 29%)
HSV	hsv(236, 81%, 48%)
CMYK	cmyk(81.3%, 75.6%, 0%, 51.8%)
CIE-LAB	lab(18.10, 32.44, -52.96)
CIE-LCH	lch(18.10, 62.10, 301.49°)
OKLab	oklab(30.75% 0.0003 -0.1534)
OKLCH	oklch(30.75% 0.153 270.1)
XYZ	xyz(4.3916, 2.5403, 18.9939)
Luminance	0.0254 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171E7B #7B7417

analogous

#17507B #171E7B #42177B

triadic

#171E7B #7B171E #1E7B17

tetradic

#171E7B #7B1750 #7B7417 #177B42

square

#171E7B #7B1750 #7B7417 #177B42

split-complementary

#171E7B #7B4217 #507B17

monochromatic

#05061A #0D1147 #171E7B #212BAF #333FD9

Accessibility & contrast

On white

13.92

#171E7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#171E7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171E7B

13.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171E7B	#FFFFFF	#000000	##FFFFFF
##171E7B	1.00	13.92	1.51	13.92
#FFFFFF	13.92	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317E

Deuteranopia (green-blind)

#002779

Tritanopia (blue-blind)

#00394A

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #171e7b;
/* rgb */ color: rgb(23, 30, 123);
/* oklch */ color: oklch(30.7% 0.153 270.1);

Tailwind

colors: {
  custom: {
    50: '#685aa2',
    500: '#171e7b',
    950: '#000000',
  },
}

SCSS

$custom: #171e7b;
$custom-light: #685aa2;
$custom-dark: #000000;

JSON

{
  "hex": "#171e7b",
  "rgb": {
    "r": 23,
    "g": 30,
    "b": 123
  },
  "hsl": {
    "h": 235.8,
    "s": 68.493,
    "l": 28.627
  },
  "oklch": {
    "l": 0.30747,
    "c": 0.15338,
    "h": 270.1
  },
  "luminance": 0.02541
}

Semantic roles & 50–950 ramp

primary

#171E7B

secondary

#B0A83E

accent

#DF3CEB

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #171E7B

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

Preview Lab → · Contrast checker → · Palette generator →