#17257D#17257D

#17257D is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.2% C 0.148 H 268.7°. Best body text is #FFFFFF at 13.15:1 contrast (WCAG AA passes).

Color values

HEX	#17257D
RGB	rgb(23, 37, 125)
HSL	hsl(232, 69%, 29%)
HSV	hsv(232, 82%, 49%)
CMYK	cmyk(81.6%, 70.4%, 0%, 51%)
CIE-LAB	lab(19.99, 28.61, -51.12)
CIE-LCH	lch(19.99, 58.59, 299.23°)
OKLab	oklab(32.17% -0.0033 -0.148)
OKLCH	oklch(32.17% 0.148 268.7)
XYZ	xyz(4.7153, 2.9854, 19.7258)
Luminance	0.0299 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17257D #7D6F17

analogous

#17587D #17257D #3C177D

triadic

#17257D #7D1725 #257D17

tetradic

#17257D #7D1758 #7D6F17 #177D3C

square

#17257D #7D1758 #7D6F17 #177D3C

split-complementary

#17257D #7D3C17 #587D17

monochromatic

#05081A #0D1649 #17257D #2134B1 #354BDA

Accessibility & contrast

On white

13.15

#17257D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#17257D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17257D

13.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17257D	#FFFFFF	#000000	##FFFFFF
##17257D	1.00	13.15	1.60	13.15
#FFFFFF	13.15	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003580

Deuteranopia (green-blind)

#002B7B

Tritanopia (blue-blind)

#003D4D

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #17257d;
/* rgb */ color: rgb(23, 37, 125);
/* oklch */ color: oklch(32.2% 0.148 268.7);

Tailwind

colors: {
  custom: {
    50: '#685fa4',
    500: '#17257d',
    950: '#000000',
  },
}

SCSS

$custom: #17257d;
$custom-light: #685fa4;
$custom-dark: #000000;

JSON

{
  "hex": "#17257d",
  "rgb": {
    "r": 23,
    "g": 37,
    "b": 125
  },
  "hsl": {
    "h": 231.765,
    "s": 68.919,
    "l": 29.02
  },
  "oklch": {
    "l": 0.32171,
    "c": 0.14808,
    "h": 268.7
  },
  "luminance": 0.02986
}

Semantic roles & 50–950 ramp

primary

#17257D

secondary

#B2A23E

accent

#D43CEC

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #17257D

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

Preview Lab → · Contrast checker → · Palette generator →