#1748B3#1748B3

#1748B3 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.2% C 0.178 H 262.8°. Best body text is #FFFFFF at 8.03:1 contrast (WCAG AA passes).

Color values

HEX	#1748B3
RGB	rgb(23, 72, 179)
HSL	hsl(221, 77%, 40%)
HSV	hsv(221, 87%, 70%)
CMYK	cmyk(87.2%, 59.8%, 0%, 29.8%)
CIE-LAB	lab(34.13, 26.14, -61.02)
CIE-LCH	lch(34.13, 66.38, 293.19°)
OKLab	oklab(44.16% -0.0223 -0.1766)
OKLCH	oklch(44.16% 0.178 262.8)
XYZ	xyz(10.8045, 8.0702, 43.6273)
Luminance	0.0807 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1748B3 #B38217

analogous

#1796B3 #1748B3 #3417B3

triadic

#1748B3 #B31748 #48B317

tetradic

#1748B3 #B31796 #B38217 #17B334

square

#1748B3 #B31796 #B38217 #17B334

split-complementary

#1748B3 #B33417 #96B317

monochromatic

#091C47 #10327D #1748B3 #2460E3 #5B88EA

Accessibility & contrast

On white

8.03

#1748B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#1748B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1748B3

8.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1748B3	#FFFFFF	#000000	##FFFFFF
##1748B3	1.00	8.03	2.61	8.03
#FFFFFF	8.03	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B7

Deuteranopia (green-blind)

#0049B1

Tritanopia (blue-blind)

#006476

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1748b3;
/* rgb */ color: rgb(23, 72, 179);
/* oklch */ color: oklch(44.2% 0.178 262.8);

Tailwind

colors: {
  custom: {
    50: '#737acb',
    500: '#1748b3',
    950: '#000000',
  },
}

SCSS

$custom: #1748b3;
$custom-light: #737acb;
$custom-dark: #000000;

JSON

{
  "hex": "#1748b3",
  "rgb": {
    "r": 23,
    "g": 72,
    "b": 179
  },
  "hsl": {
    "h": 221.154,
    "s": 77.228,
    "l": 39.608
  },
  "oklch": {
    "l": 0.44161,
    "c": 0.17799,
    "h": 262.8
  },
  "luminance": 0.08072
}

Semantic roles & 50–950 ramp

primary

#1748B3

secondary

#CDA958

accent

#B834F4

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #1748B3

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

Preview Lab → · Contrast checker → · Palette generator →