#17256B#17256B

#17256B is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.3% C 0.123 H 268.9°. Best body text is #FFFFFF at 13.88:1 contrast (WCAG AA passes).

Color values

HEX	#17256B
RGB	rgb(23, 37, 107)
HSL	hsl(230, 65%, 25%)
HSV	hsv(230, 79%, 42%)
CMYK	cmyk(78.5%, 65.4%, 0%, 58%)
CIE-LAB	lab(18.22, 21.48, -42.45)
CIE-LCH	lch(18.22, 47.58, 296.84°)
OKLab	oklab(30.33% -0.0022 -0.1227)
OKLCH	oklch(30.33% 0.123 268.9)
XYZ	xyz(3.6678, 2.5664, 14.2091)
Luminance	0.0257 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17256B #6B5D17

analogous

#174F6B #17256B #33176B

triadic

#17256B #6B1725 #256B17

tetradic

#17256B #6B174F #6B5D17 #176B33

square

#17256B #6B174F #6B5D17 #176B33

split-complementary

#17256B #6B3317 #4F6B17

monochromatic

#050919 #0C1439 #17256B #22369D #2D48D0

Accessibility & contrast

On white

13.88

#17256B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#17256B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17256B

13.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17256B	#FFFFFF	#000000	##FFFFFF
##17256B	1.00	13.88	1.51	13.88
#FFFFFF	13.88	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00306D

Deuteranopia (green-blind)

#00296A

Tritanopia (blue-blind)

#003744

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #17256b;
/* rgb */ color: rgb(23, 37, 107);
/* oklch */ color: oklch(30.3% 0.123 268.9);

Tailwind

colors: {
  custom: {
    50: '#635f96',
    500: '#17256b',
    950: '#000000',
  },
}

SCSS

$custom: #17256b;
$custom-light: #635f96;
$custom-dark: #000000;

JSON

{
  "hex": "#17256b",
  "rgb": {
    "r": 23,
    "g": 37,
    "b": 107
  },
  "hsl": {
    "h": 230,
    "s": 64.615,
    "l": 25.49
  },
  "oklch": {
    "l": 0.30334,
    "c": 0.12269,
    "h": 268.9
  },
  "luminance": 0.02567
}

Semantic roles & 50–950 ramp

primary

#17256B

secondary

#A1903D

accent

#CC40E8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040D

muted

#7A797E

Preview Lab

Preview with #17256B

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

Preview Lab → · Contrast checker → · Palette generator →