#1737A1#1737A1

#1737A1 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.2% C 0.175 H 265.4°. Best body text is #FFFFFF at 10.01:1 contrast (WCAG AA passes).

Color values

HEX	#1737A1
RGB	rgb(23, 55, 161)
HSL	hsl(226, 75%, 36%)
HSV	hsv(226, 86%, 63%)
CMYK	cmyk(85.7%, 65.8%, 0%, 36.9%)
CIE-LAB	lab(28.08, 30.49, -60.14)
CIE-LCH	lch(28.08, 67.43, 296.89°)
OKLab	oklab(39.17% -0.014 -0.1742)
OKLCH	oklch(39.17% 0.175 265.4)
XYZ	xyz(8.1503, 5.4867, 34.3408)
Luminance	0.0549 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1737A1 #A18117

analogous

#177CA1 #1737A1 #3C17A1

triadic

#1737A1 #A11737 #37A117

tetradic

#1737A1 #A1177C #A18117 #17A13C

square

#1737A1 #A1177C #A18117 #17A13C

split-complementary

#1737A1 #A13C17 #7CA117

monochromatic

#081236 #0F256B #1737A1 #1F49D7 #4D70E6

Accessibility & contrast

On white

10.01

#1737A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#1737A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1737A1

10.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1737A1	#FFFFFF	#000000	##FFFFFF
##1737A1	1.00	10.01	2.10	10.01
#FFFFFF	10.01	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A4

Deuteranopia (green-blind)

#003C9F

Tritanopia (blue-blind)

#005367

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1737a1;
/* rgb */ color: rgb(23, 55, 161);
/* oklch */ color: oklch(39.2% 0.175 265.4);

Tailwind

colors: {
  custom: {
    50: '#706dbe',
    500: '#1737a1',
    950: '#000000',
  },
}

SCSS

$custom: #1737a1;
$custom-light: #706dbe;
$custom-dark: #000000;

JSON

{
  "hex": "#1737a1",
  "rgb": {
    "r": 23,
    "g": 55,
    "b": 161
  },
  "hsl": {
    "h": 226.087,
    "s": 75,
    "l": 36.078
  },
  "oklch": {
    "l": 0.39172,
    "c": 0.17481,
    "h": 265.4
  },
  "luminance": 0.05488
}

Semantic roles & 50–950 ramp

primary

#1737A1

secondary

#C7AB4C

accent

#C636F2

background

#F7F6FB

surface

#EDEBF7

border

#C8C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1737A1

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

Preview Lab → · Contrast checker → · Palette generator →