#1749B4#1749B4

#1749B4 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.5% C 0.178 H 262.7°. Best body text is #FFFFFF at 7.93:1 contrast (WCAG AA passes).

Color values

HEX	#1749B4
RGB	rgb(23, 73, 180)
HSL	hsl(221, 77%, 40%)
HSV	hsv(221, 87%, 71%)
CMYK	cmyk(87.2%, 59.4%, 0%, 29.4%)
CIE-LAB	lab(34.48, 25.86, -61.03)
CIE-LCH	lch(34.48, 66.29, 292.96°)
OKLab	oklab(44.45% -0.0227 -0.1766)
OKLCH	oklch(44.45% 0.178 262.7)
XYZ	xyz(10.9711, 8.2411, 44.1836)
Luminance	0.0824 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1749B4 #B48217

analogous

#1797B4 #1749B4 #3417B4

triadic

#1749B4 #B41749 #49B417

tetradic

#1749B4 #B41797 #B48217 #17B434

square

#1749B4 #B41797 #B48217 #17B434

split-complementary

#1749B4 #B43417 #97B417

monochromatic

#091D47 #10337E #1749B4 #2562E3 #5B89EA

Accessibility & contrast

On white

7.93

#1749B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#1749B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1749B4

7.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1749B4	#FFFFFF	#000000	##FFFFFF
##1749B4	1.00	7.93	2.65	7.93
#FFFFFF	7.93	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B8

Deuteranopia (green-blind)

#004AB2

Tritanopia (blue-blind)

#006477

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1749b4;
/* rgb */ color: rgb(23, 73, 180);
/* oklch */ color: oklch(44.5% 0.178 262.7);

Tailwind

colors: {
  custom: {
    50: '#747bcb',
    500: '#1749b4',
    950: '#000000',
  },
}

SCSS

$custom: #1749b4;
$custom-light: #747bcb;
$custom-dark: #000000;

JSON

{
  "hex": "#1749b4",
  "rgb": {
    "r": 23,
    "g": 73,
    "b": 180
  },
  "hsl": {
    "h": 220.892,
    "s": 77.34,
    "l": 39.804
  },
  "oklch": {
    "l": 0.4445,
    "c": 0.17808,
    "h": 262.7
  },
  "luminance": 0.08243
}

Semantic roles & 50–950 ramp

primary

#1749B4

secondary

#CEA959

accent

#B734F4

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #1749B4

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

Preview Lab → · Contrast checker → · Palette generator →