#1C45B4#1C45B4

#1C45B4 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 43.8% C 0.182 H 264.4°. Best body text is #FFFFFF at 8.20:1 contrast (WCAG AA passes).

Color values

HEX	#1C45B4
RGB	rgb(28, 69, 180)
HSL	hsl(224, 73%, 41%)
HSV	hsv(224, 84%, 71%)
CMYK	cmyk(84.4%, 61.7%, 0%, 29.4%)
CIE-LAB	lab(33.56, 28.89, -62.54)
CIE-LCH	lch(33.56, 68.89, 294.79°)
OKLab	oklab(43.8% -0.0177 -0.181)
OKLCH	oklch(43.8% 0.182 264.4)
XYZ	xyz(10.8423, 7.7971, 44.1047)
Luminance	0.0780 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C45B4 #B48B1C

analogous

#1C91B4 #1C45B4 #3F1CB4

triadic

#1C45B4 #B41C45 #45B41C

tetradic

#1C45B4 #B41C91 #B48B1C #1CB43F

square

#1C45B4 #B41C91 #B48B1C #1CB43F

split-complementary

#1C45B4 #B43F1C #91B41C

monochromatic

#0C1C4A #14317F #1C45B4 #2F5EDF #6487E7

Accessibility & contrast

On white

8.20

#1C45B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#1C45B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C45B4

8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C45B4	#FFFFFF	#000000	##FFFFFF
##1C45B4	1.00	8.20	2.56	8.20
#FFFFFF	8.20	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B8

Deuteranopia (green-blind)

#0048B2

Tritanopia (blue-blind)

#006276

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1c45b4;
/* rgb */ color: rgb(28, 69, 180);
/* oklch */ color: oklch(43.8% 0.182 264.4);

Tailwind

colors: {
  custom: {
    50: '#7578cb',
    500: '#1c45b4',
    950: '#000000',
  },
}

SCSS

$custom: #1c45b4;
$custom-light: #7578cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1c45b4",
  "rgb": {
    "r": 28,
    "g": 69,
    "b": 180
  },
  "hsl": {
    "h": 223.816,
    "s": 73.077,
    "l": 40.784
  },
  "oklch": {
    "l": 0.43798,
    "c": 0.1819,
    "h": 264.4
  },
  "luminance": 0.07798
}

Semantic roles & 50–950 ramp

primary

#1C45B4

secondary

#CCAF60

accent

#BE38F0

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #1C45B4

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

Preview Lab → · Contrast checker → · Palette generator →