#1730A0#1730A0

#1730A0 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.8% C 0.182 H 266.5°. Best body text is #FFFFFF at 10.68:1 contrast (WCAG AA passes).

Color values

HEX	#1730A0
RGB	rgb(23, 48, 160)
HSL	hsl(229, 75%, 36%)
HSV	hsv(229, 86%, 63%)
CMYK	cmyk(85.6%, 70%, 0%, 37.3%)
CIE-LAB	lab(26.25, 34.72, -62.53)
CIE-LCH	lch(26.25, 71.52, 299.04°)
OKLab	oklab(37.81% -0.0109 -0.1813)
OKLCH	oklch(37.81% 0.182 266.5)
XYZ	xyz(7.7532, 4.8332, 33.7751)
Luminance	0.0483 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1730A0 #A08717

analogous

#1774A0 #1730A0 #4217A0

triadic

#1730A0 #A01730 #30A017

tetradic

#1730A0 #A01774 #A08717 #17A042

square

#1730A0 #A01774 #A08717 #17A042

split-complementary

#1730A0 #A04217 #74A017

monochromatic

#081035 #0F206A #1730A0 #1F40D6 #4C68E5

Accessibility & contrast

On white

10.68

#1730A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#1730A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1730A0

10.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1730A0	#FFFFFF	#000000	##FFFFFF
##1730A0	1.00	10.68	1.97	10.68
#FFFFFF	10.68	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045A3

Deuteranopia (green-blind)

#00389E

Tritanopia (blue-blind)

#004F64

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1730a0;
/* rgb */ color: rgb(23, 48, 160);
/* oklch */ color: oklch(37.8% 0.182 266.5);

Tailwind

colors: {
  custom: {
    50: '#7068bd',
    500: '#1730a0',
    950: '#000000',
  },
}

SCSS

$custom: #1730a0;
$custom-light: #7068bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1730a0",
  "rgb": {
    "r": 23,
    "g": 48,
    "b": 160
  },
  "hsl": {
    "h": 229.051,
    "s": 74.863,
    "l": 35.882
  },
  "oklch": {
    "l": 0.37808,
    "c": 0.18161,
    "h": 266.5
  },
  "luminance": 0.04834
}

Semantic roles & 50–950 ramp

primary

#1730A0

secondary

#C7B14C

accent

#CF36F1

background

#F7F6FB

surface

#EDEBF7

border

#C8C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #1730A0

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

Preview Lab → · Contrast checker → · Palette generator →