#1B48A1#1B48A1

#1B48A1 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 42.7% C 0.153 H 262.0°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#1B48A1
RGB	rgb(27, 72, 161)
HSL	hsl(220, 71%, 37%)
HSV	hsv(220, 83%, 63%)
CMYK	cmyk(83.2%, 55.3%, 0%, 36.9%)
CIE-LAB	lab(32.79, 19.28, -52.44)
CIE-LCH	lch(32.79, 55.88, 290.19°)
OKLab	oklab(42.73% -0.0212 -0.1514)
OKLCH	oklch(42.73% 0.153 262)
XYZ	xyz(9.2001, 7.4398, 34.6624)
Luminance	0.0744 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B48A1 #A1741B

analogous

#1B8BA1 #1B48A1 #311BA1

triadic

#1B48A1 #A11B48 #48A11B

tetradic

#1B48A1 #A11B8B #A1741B #1BA131

square

#1B48A1 #A11B8B #A1741B #1BA131

split-complementary

#1B48A1 #A1311B #8BA11B

monochromatic

#091938 #12316D #1B48A1 #245FD5 #5484E2

Accessibility & contrast

On white

8.44

#1B48A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#1B48A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B48A1

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B48A1	#FFFFFF	#000000	##FFFFFF
##1B48A1	1.00	8.44	2.49	8.44
#FFFFFF	8.44	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053A4

Deuteranopia (green-blind)

#00479F

Tritanopia (blue-blind)

#005E6D

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1b48a1;
/* rgb */ color: rgb(27, 72, 161);
/* oklch */ color: oklch(42.7% 0.153 262.0);

Tailwind

colors: {
  custom: {
    50: '#707abd',
    500: '#1b48a1',
    950: '#000000',
  },
}

SCSS

$custom: #1b48a1;
$custom-light: #707abd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b48a1",
  "rgb": {
    "r": 27,
    "g": 72,
    "b": 161
  },
  "hsl": {
    "h": 219.851,
    "s": 71.277,
    "l": 36.863
  },
  "oklch": {
    "l": 0.42728,
    "c": 0.15285,
    "h": 262
  },
  "luminance": 0.07441
}

Semantic roles & 50–950 ramp

primary

#1B48A1

secondary

#C59F52

accent

#B13AEE

background

#F7F7FB

surface

#EDEDF7

border

#C8C8D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1B48A1

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

Preview Lab → · Contrast checker → · Palette generator →