#1D48A8#1D48A8

#1D48A8 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.4% C 0.162 H 263.1°. Best body text is #FFFFFF at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#1D48A8
RGB	rgb(29, 72, 168)
HSL	hsl(221, 71%, 39%)
HSV	hsv(221, 83%, 66%)
CMYK	cmyk(82.7%, 57.1%, 0%, 34.1%)
CIE-LAB	lab(33.40, 22.25, -55.65)
CIE-LCH	lch(33.40, 59.94, 291.79°)
OKLab	oklab(43.38% -0.0194 -0.1608)
OKLCH	oklch(43.38% 0.162 263.1)
XYZ	xyz(9.8894, 7.7219, 38.0075)
Luminance	0.0772 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D48A8 #A87D1D

analogous

#1D8DA8 #1D48A8 #371DA8

triadic

#1D48A8 #A81D48 #48A81D

tetradic

#1D48A8 #A81D8D #A87D1D #1DA837

square

#1D48A8 #A81D8D #A87D1D #1DA837

split-complementary

#1D48A8 #A8371D #8DA81D

monochromatic

#0B1B40 #143274 #1D48A8 #285FDA #5C86E3

Accessibility & contrast

On white

8.25

#1D48A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#1D48A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D48A8

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D48A8	#FFFFFF	#000000	##FFFFFF
##1D48A8	1.00	8.25	2.54	8.25
#FFFFFF	8.25	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055AB

Deuteranopia (green-blind)

#0048A6

Tritanopia (blue-blind)

#006071

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1d48a8;
/* rgb */ color: rgb(29, 72, 168);
/* oklch */ color: oklch(43.4% 0.162 263.1);

Tailwind

colors: {
  custom: {
    50: '#727ac3',
    500: '#1d48a8',
    950: '#000000',
  },
}

SCSS

$custom: #1d48a8;
$custom-light: #727ac3;
$custom-dark: #000000;

JSON

{
  "hex": "#1d48a8",
  "rgb": {
    "r": 29,
    "g": 72,
    "b": 168
  },
  "hsl": {
    "h": 221.439,
    "s": 70.558,
    "l": 38.627
  },
  "oklch": {
    "l": 0.43378,
    "c": 0.16193,
    "h": 263.1
  },
  "luminance": 0.07723
}

Semantic roles & 50–950 ramp

primary

#1D48A8

secondary

#C7A55A

accent

#B63AED

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1D48A8

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

Preview Lab → · Contrast checker → · Palette generator →