#1C42B4#1C42B4

#1C42B4 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.2% C 0.185 H 265.0°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#1C42B4
RGB	rgb(28, 66, 180)
HSL	hsl(225, 73%, 41%)
HSV	hsv(225, 84%, 71%)
CMYK	cmyk(84.4%, 63.3%, 0%, 29.4%)
CIE-LAB	lab(32.78, 30.87, -63.81)
CIE-LCH	lch(32.78, 70.88, 295.82°)
OKLab	oklab(43.22% -0.0162 -0.1848)
OKLCH	oklch(43.22% 0.185 265)
XYZ	xyz(10.6624, 7.4373, 44.0447)
Luminance	0.0744 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C42B4 #B48E1C

analogous

#1C8EB4 #1C42B4 #421CB4

triadic

#1C42B4 #B41C42 #42B41C

tetradic

#1C42B4 #B41C8E #B48E1C #1CB442

square

#1C42B4 #B41C8E #B48E1C #1CB442

split-complementary

#1C42B4 #B4421C #8EB41C

monochromatic

#0C1B4A #142F7F #1C42B4 #2F5BDF #6484E7

Accessibility & contrast

On white

8.44

#1C42B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#1C42B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C42B4

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C42B4	#FFFFFF	#000000	##FFFFFF
##1C42B4	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)

#0054B8

Deuteranopia (green-blind)

#0046B2

Tritanopia (blue-blind)

#006075

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1c42b4;
/* rgb */ color: rgb(28, 66, 180);
/* oklch */ color: oklch(43.2% 0.185 265.0);

Tailwind

colors: {
  custom: {
    50: '#7576cb',
    500: '#1c42b4',
    950: '#000000',
  },
}

SCSS

$custom: #1c42b4;
$custom-light: #7576cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1c42b4",
  "rgb": {
    "r": 28,
    "g": 66,
    "b": 180
  },
  "hsl": {
    "h": 225,
    "s": 73.077,
    "l": 40.784
  },
  "oklch": {
    "l": 0.43223,
    "c": 0.18549,
    "h": 265
  },
  "luminance": 0.07439
}

Semantic roles & 50–950 ramp

primary

#1C42B4

secondary

#CCB160

accent

#C238F0

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #1C42B4

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

Preview Lab → · Contrast checker → · Palette generator →