#1730A1#1730A1

#1730A1 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.9% C 0.183 H 266.5°. Best body text is #FFFFFF at 10.64:1 contrast (WCAG AA passes).

Color values

HEX	#1730A1
RGB	rgb(23, 48, 161)
HSL	hsl(229, 75%, 36%)
HSV	hsv(229, 86%, 63%)
CMYK	cmyk(85.7%, 70.2%, 0%, 36.9%)
CIE-LAB	lab(26.36, 35.09, -62.97)
CIE-LCH	lch(26.36, 72.09, 299.13°)
OKLab	oklab(37.91% -0.011 -0.1826)
OKLCH	oklch(37.91% 0.183 266.5)
XYZ	xyz(7.8411, 4.8683, 34.2377)
Luminance	0.0487 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1730A1 #A18817

analogous

#1775A1 #1730A1 #4317A1

triadic

#1730A1 #A11730 #30A117

tetradic

#1730A1 #A11775 #A18817 #17A143

square

#1730A1 #A11775 #A18817 #17A143

split-complementary

#1730A1 #A14317 #75A117

monochromatic

#081036 #0F206B #1730A1 #1F40D7 #4D69E6

Accessibility & contrast

On white

10.64

#1730A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#1730A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1730A1

10.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1730A1	#FFFFFF	#000000	##FFFFFF
##1730A1	1.00	10.64	1.97	10.64
#FFFFFF	10.64	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045A4

Deuteranopia (green-blind)

#00389F

Tritanopia (blue-blind)

#005065

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1730a1;
/* rgb */ color: rgb(23, 48, 161);
/* oklch */ color: oklch(37.9% 0.183 266.5);

Tailwind

colors: {
  custom: {
    50: '#7168be',
    500: '#1730a1',
    950: '#000000',
  },
}

SCSS

$custom: #1730a1;
$custom-light: #7168be;
$custom-dark: #000000;

JSON

{
  "hex": "#1730a1",
  "rgb": {
    "r": 23,
    "g": 48,
    "b": 161
  },
  "hsl": {
    "h": 229.13,
    "s": 75,
    "l": 36.078
  },
  "oklch": {
    "l": 0.37913,
    "c": 0.18289,
    "h": 266.5
  },
  "luminance": 0.04869
}

Semantic roles & 50–950 ramp

primary

#1730A1

secondary

#C7B14C

accent

#D036F2

background

#F7F6FB

surface

#EDEBF7

border

#C8C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #1730A1

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

Preview Lab → · Contrast checker → · Palette generator →