#1737A0#1737A0

#1737A0 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.1% C 0.173 H 265.4°. Best body text is #FFFFFF at 10.04:1 contrast (WCAG AA passes).

Color values

HEX	#1737A0
RGB	rgb(23, 55, 160)
HSL	hsl(226, 75%, 36%)
HSV	hsv(226, 86%, 63%)
CMYK	cmyk(85.6%, 65.6%, 0%, 37.3%)
CIE-LAB	lab(27.98, 30.10, -59.69)
CIE-LCH	lch(27.98, 66.85, 296.76°)
OKLab	oklab(39.07% -0.0139 -0.1729)
OKLCH	oklch(39.07% 0.173 265.4)
XYZ	xyz(8.0625, 5.4516, 33.8782)
Luminance	0.0545 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1737A0 #A08017

analogous

#177BA0 #1737A0 #3B17A0

triadic

#1737A0 #A01737 #37A017

tetradic

#1737A0 #A0177B #A08017 #17A03B

square

#1737A0 #A0177B #A08017 #17A03B

split-complementary

#1737A0 #A03B17 #7BA017

monochromatic

#081235 #0F256A #1737A0 #1F49D6 #4C70E5

Accessibility & contrast

On white

10.04

#1737A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#1737A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1737A0

10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1737A0	#FFFFFF	#000000	##FFFFFF
##1737A0	1.00	10.04	2.09	10.04
#FFFFFF	10.04	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A3

Deuteranopia (green-blind)

#003C9E

Tritanopia (blue-blind)

#005366

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1737a0;
/* rgb */ color: rgb(23, 55, 160);
/* oklch */ color: oklch(39.1% 0.173 265.4);

Tailwind

colors: {
  custom: {
    50: '#706dbd',
    500: '#1737a0',
    950: '#000000',
  },
}

SCSS

$custom: #1737a0;
$custom-light: #706dbd;
$custom-dark: #000000;

JSON

{
  "hex": "#1737a0",
  "rgb": {
    "r": 23,
    "g": 55,
    "b": 160
  },
  "hsl": {
    "h": 225.985,
    "s": 74.863,
    "l": 35.882
  },
  "oklch": {
    "l": 0.39074,
    "c": 0.17349,
    "h": 265.4
  },
  "luminance": 0.05453
}

Semantic roles & 50–950 ramp

primary

#1737A0

secondary

#C7AA4C

accent

#C636F1

background

#F7F6FB

surface

#EDEBF7

border

#C8C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1737A0

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

Preview Lab → · Contrast checker → · Palette generator →