#1B45A7#1B45A7

#1B45A7 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 42.6% C 0.165 H 263.4°. Best body text is #FFFFFF at 8.55:1 contrast (WCAG AA passes).

Color values

HEX	#1B45A7
RGB	rgb(27, 69, 167)
HSL	hsl(222, 72%, 38%)
HSV	hsv(222, 84%, 65%)
CMYK	cmyk(83.8%, 58.7%, 0%, 34.5%)
CIE-LAB	lab(32.43, 23.71, -56.63)
CIE-LCH	lch(32.43, 61.39, 292.72°)
OKLab	oklab(42.61% -0.0188 -0.1637)
OKLCH	oklch(42.61% 0.165 263.4)
XYZ	xyz(9.5527, 7.2781, 37.4531)
Luminance	0.0728 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B45A7 #A77D1B

analogous

#1B8BA7 #1B45A7 #371BA7

triadic

#1B45A7 #A71B45 #45A71B

tetradic

#1B45A7 #A71B8B #A77D1B #1BA737

square

#1B45A7 #A71B8B #A77D1B #1BA737

split-complementary

#1B45A7 #A7371B #8BA71B

monochromatic

#0A193E #122F72 #1B45A7 #245BDC #5882E4

Accessibility & contrast

On white

8.55

#1B45A7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#1B45A7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B45A7

8.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B45A7	#FFFFFF	#000000	##FFFFFF
##1B45A7	1.00	8.55	2.46	8.55
#FFFFFF	8.55	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053AA

Deuteranopia (green-blind)

#0046A5

Tritanopia (blue-blind)

#005E6F

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1b45a7;
/* rgb */ color: rgb(27, 69, 167);
/* oklch */ color: oklch(42.6% 0.165 263.4);

Tailwind

colors: {
  custom: {
    50: '#7178c2',
    500: '#1b45a7',
    950: '#000000',
  },
}

SCSS

$custom: #1b45a7;
$custom-light: #7178c2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b45a7",
  "rgb": {
    "r": 27,
    "g": 69,
    "b": 167
  },
  "hsl": {
    "h": 222,
    "s": 72.165,
    "l": 38.039
  },
  "oklch": {
    "l": 0.42609,
    "c": 0.1648,
    "h": 263.4
  },
  "luminance": 0.07279
}

Semantic roles & 50–950 ramp

primary

#1B45A7

secondary

#C8A656

accent

#B839EF

background

#F7F7FC

surface

#EDEDF8

border

#C8C8D1

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1B45A7

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

Preview Lab → · Contrast checker → · Palette generator →