#1B45A0#1B45A0

#1B45A0 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.0% C 0.155 H 262.9°. Best body text is #FFFFFF at 8.73:1 contrast (WCAG AA passes).

Color values

HEX	#1B45A0
RGB	rgb(27, 69, 160)
HSL	hsl(221, 71%, 37%)
HSV	hsv(221, 83%, 63%)
CMYK	cmyk(83.1%, 56.9%, 0%, 37.3%)
CIE-LAB	lab(31.87, 20.92, -53.34)
CIE-LCH	lch(31.87, 57.30, 291.42°)
OKLab	oklab(42.01% -0.0193 -0.154)
OKLCH	oklch(42.01% 0.155 262.9)
XYZ	xyz(8.9230, 7.0262, 34.1368)
Luminance	0.0703 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B45A0 #A0761B

analogous

#1B88A0 #1B45A0 #341BA0

triadic

#1B45A0 #A01B45 #45A01B

tetradic

#1B45A0 #A01B88 #A0761B #1BA034

square

#1B45A0 #A01B88 #A0761B #1BA034

split-complementary

#1B45A0 #A0341B #88A01B

monochromatic

#091837 #122E6C #1B45A0 #245CD4 #5380E2

Accessibility & contrast

On white

8.73

#1B45A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#1B45A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B45A0

8.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B45A0	#FFFFFF	#000000	##FFFFFF
##1B45A0	1.00	8.73	2.41	8.73
#FFFFFF	8.73	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A3

Deuteranopia (green-blind)

#00459E

Tritanopia (blue-blind)

#005C6B

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b45a0;
/* rgb */ color: rgb(27, 69, 160);
/* oklch */ color: oklch(42.0% 0.155 262.9);

Tailwind

colors: {
  custom: {
    50: '#6f78bd',
    500: '#1b45a0',
    950: '#000000',
  },
}

SCSS

$custom: #1b45a0;
$custom-light: #6f78bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b45a0",
  "rgb": {
    "r": 27,
    "g": 69,
    "b": 160
  },
  "hsl": {
    "h": 221.053,
    "s": 71.123,
    "l": 36.667
  },
  "oklch": {
    "l": 0.42007,
    "c": 0.15525,
    "h": 262.9
  },
  "luminance": 0.07027
}

Semantic roles & 50–950 ramp

primary

#1B45A0

secondary

#C5A152

accent

#B53AEE

background

#F7F7FB

surface

#EDEDF7

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1B45A0

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

Preview Lab → · Contrast checker → · Palette generator →