#1548B4#1548B4

#1548B4 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.2% C 0.180 H 262.6°. Best body text is #FFFFFF at 8.02:1 contrast (WCAG AA passes).

Color values

HEX	#1548B4
RGB	rgb(21, 72, 180)
HSL	hsl(221, 79%, 39%)
HSV	hsv(221, 88%, 71%)
CMYK	cmyk(88.3%, 60%, 0%, 29.4%)
CIE-LAB	lab(34.17, 26.41, -61.55)
CIE-LCH	lch(34.17, 66.98, 293.22°)
OKLab	oklab(44.2% -0.0232 -0.1782)
OKLCH	oklch(44.2% 0.18 262.6)
XYZ	xyz(10.8619, 8.0881, 44.1598)
Luminance	0.0809 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1548B4 #B48115

analogous

#1597B4 #1548B4 #3215B4

triadic

#1548B4 #B41548 #48B415

tetradic

#1548B4 #B41597 #B48115 #15B432

square

#1548B4 #B41597 #B48115 #15B432

split-complementary

#1548B4 #B43215 #97B415

monochromatic

#081C46 #0F327D #1548B4 #2160E5 #5887EC

Accessibility & contrast

On white

8.02

#1548B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#1548B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1548B4

8.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1548B4	#FFFFFF	#000000	##FFFFFF
##1548B4	1.00	8.02	2.62	8.02
#FFFFFF	8.02	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B8

Deuteranopia (green-blind)

#0049B2

Tritanopia (blue-blind)

#006477

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1548b4;
/* rgb */ color: rgb(21, 72, 180);
/* oklch */ color: oklch(44.2% 0.180 262.6);

Tailwind

colors: {
  custom: {
    50: '#737acb',
    500: '#1548b4',
    950: '#000000',
  },
}

SCSS

$custom: #1548b4;
$custom-light: #737acb;
$custom-dark: #000000;

JSON

{
  "hex": "#1548b4",
  "rgb": {
    "r": 21,
    "g": 72,
    "b": 180
  },
  "hsl": {
    "h": 220.755,
    "s": 79.104,
    "l": 39.412
  },
  "oklch": {
    "l": 0.44201,
    "c": 0.17968,
    "h": 262.6
  },
  "luminance": 0.08089
}

Semantic roles & 50–950 ramp

primary

#1548B4

secondary

#CFA856

accent

#B732F6

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #1548B4

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

Preview Lab → · Contrast checker → · Palette generator →