#1B45C5#1B45C5

#1B45C5 is a mid, highly saturated blue. Relative luminance 0.085; OKLCH L 45.4% C 0.204 H 264.8°. Best body text is #FFFFFF at 7.77:1 contrast (WCAG AA passes).

Color values

HEX	#1B45C5
RGB	rgb(27, 69, 197)
HSL	hsl(225, 76%, 44%)
HSV	hsv(225, 86%, 77%)
CMYK	cmyk(86.3%, 65%, 0%, 22.7%)
CIE-LAB	lab(35.04, 35.31, -70.10)
CIE-LCH	lch(35.04, 78.49, 296.73°)
OKLab	oklab(45.35% -0.0184 -0.2032)
OKLCH	oklch(45.35% 0.204 264.8)
XYZ	xyz(12.6546, 8.5189, 53.7898)
Luminance	0.0852 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B45C5 #C59B1B

analogous

#1B9AC5 #1B45C5 #461BC5

triadic

#1B45C5 #C51B45 #45C51B

tetradic

#1B45C5 #C51B9A #C59B1B #1BC546

square

#1B45C5 #C51B9A #C59B1B #1BC546

split-complementary

#1B45C5 #C5461B #9AC51B

monochromatic

#0C1F59 #14328F #1B45C5 #3963E4 #6F8EEB

Accessibility & contrast

On white

7.77

#1B45C5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#1B45C5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B45C5

7.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B45C5	#FFFFFF	#000000	##FFFFFF
##1B45C5	1.00	7.77	2.70	7.77
#FFFFFF	7.77	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BC9

Deuteranopia (green-blind)

#004BC3

Tritanopia (blue-blind)

#00677F

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1b45c5;
/* rgb */ color: rgb(27, 69, 197);
/* oklch */ color: oklch(45.4% 0.204 264.8);

Tailwind

colors: {
  custom: {
    50: '#7978d8',
    500: '#1b45c5',
    950: '#000000',
  },
}

SCSS

$custom: #1b45c5;
$custom-light: #7978d8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b45c5",
  "rgb": {
    "r": 27,
    "g": 69,
    "b": 197
  },
  "hsl": {
    "h": 225.176,
    "s": 75.893,
    "l": 43.922
  },
  "oklch": {
    "l": 0.45353,
    "c": 0.204,
    "h": 264.8
  },
  "luminance": 0.0852
}

Semantic roles & 50–950 ramp

primary

#1B45C5

secondary

#D1B86A

accent

#C435F2

background

#F8F7FD

surface

#EFEDFA

border

#CAC8D3

text

#0B0915

muted

#7C7B83

Preview Lab

Preview with #1B45C5

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

Preview Lab → · Contrast checker → · Palette generator →