#1C41B4#1C41B4

#1C41B4 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.0% C 0.187 H 265.2°. Best body text is #FFFFFF at 8.52:1 contrast (WCAG AA passes).

Color values

HEX	#1C41B4
RGB	rgb(28, 65, 180)
HSL	hsl(225, 73%, 41%)
HSV	hsv(225, 84%, 71%)
CMYK	cmyk(84.4%, 63.9%, 0%, 29.4%)
CIE-LAB	lab(32.53, 31.54, -64.22)
CIE-LCH	lch(32.53, 71.55, 296.15°)
OKLab	oklab(43.04% -0.0157 -0.186)
OKLCH	oklch(43.04% 0.187 265.2)
XYZ	xyz(10.6045, 7.3214, 44.0254)
Luminance	0.0732 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C41B4 #B48F1C

analogous

#1C8DB4 #1C41B4 #431CB4

triadic

#1C41B4 #B41C41 #41B41C

tetradic

#1C41B4 #B41C8D #B48F1C #1CB443

square

#1C41B4 #B41C8D #B48F1C #1CB443

split-complementary

#1C41B4 #B4431C #8DB41C

monochromatic

#0C1B4A #142E7F #1C41B4 #2F59DF #6484E7

Accessibility & contrast

On white

8.52

#1C41B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#1C41B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C41B4

8.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C41B4	#FFFFFF	#000000	##FFFFFF
##1C41B4	1.00	8.52	2.46	8.52
#FFFFFF	8.52	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B8

Deuteranopia (green-blind)

#0046B2

Tritanopia (blue-blind)

#005F74

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1c41b4;
/* rgb */ color: rgb(28, 65, 180);
/* oklch */ color: oklch(43.0% 0.187 265.2);

Tailwind

colors: {
  custom: {
    50: '#7575cb',
    500: '#1c41b4',
    950: '#000000',
  },
}

SCSS

$custom: #1c41b4;
$custom-light: #7575cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1c41b4",
  "rgb": {
    "r": 28,
    "g": 65,
    "b": 180
  },
  "hsl": {
    "h": 225.395,
    "s": 73.077,
    "l": 40.784
  },
  "oklch": {
    "l": 0.43035,
    "c": 0.18667,
    "h": 265.2
  },
  "luminance": 0.07323
}

Semantic roles & 50–950 ramp

primary

#1C41B4

secondary

#CCB160

accent

#C338F0

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #1C41B4

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

Preview Lab → · Contrast checker → · Palette generator →