#1C4DB4#1C4DB4

#1C4DB4 is a mid, vivid blue. Relative luminance 0.088; OKLCH L 45.4% C 0.172 H 262.6°. Best body text is #FFFFFF at 7.58:1 contrast (WCAG AA passes).

Color values

HEX	#1C4DB4
RGB	rgb(28, 77, 180)
HSL	hsl(221, 73%, 41%)
HSV	hsv(221, 84%, 71%)
CMYK	cmyk(84.4%, 57.2%, 0%, 29.4%)
CIE-LAB	lab(35.69, 23.54, -59.05)
CIE-LCH	lch(35.69, 63.57, 291.74°)
OKLab	oklab(45.4% -0.0223 -0.1707)
OKLCH	oklch(45.4% 0.172 262.6)
XYZ	xyz(11.3680, 8.8485, 44.2799)
Luminance	0.0885 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4DB4 #B4831C

analogous

#1C99B4 #1C4DB4 #371CB4

triadic

#1C4DB4 #B41C4D #4DB41C

tetradic

#1C4DB4 #B41C99 #B4831C #1CB437

square

#1C4DB4 #B41C99 #B4831C #1CB437

split-complementary

#1C4DB4 #B4371C #99B41C

monochromatic

#0C204A #14367F #1C4DB4 #2F67DF #648EE7

Accessibility & contrast

On white

7.58

#1C4DB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#1C4DB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4DB4

7.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4DB4	#FFFFFF	#000000	##FFFFFF
##1C4DB4	1.00	7.58	2.77	7.58
#FFFFFF	7.58	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BB8

Deuteranopia (green-blind)

#004DB2

Tritanopia (blue-blind)

#006779

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1c4db4;
/* rgb */ color: rgb(28, 77, 180);
/* oklch */ color: oklch(45.4% 0.172 262.6);

Tailwind

colors: {
  custom: {
    50: '#747ecb',
    500: '#1c4db4',
    950: '#000000',
  },
}

SCSS

$custom: #1c4db4;
$custom-light: #747ecb;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4db4",
  "rgb": {
    "r": 28,
    "g": 77,
    "b": 180
  },
  "hsl": {
    "h": 220.658,
    "s": 73.077,
    "l": 40.784
  },
  "oklch": {
    "l": 0.45397,
    "c": 0.17213,
    "h": 262.6
  },
  "luminance": 0.0885
}

Semantic roles & 50–950 ramp

primary

#1C4DB4

secondary

#CCA960

accent

#B538F0

background

#F7F7FC

surface

#EEEEF9

border

#C9C9D2

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #1C4DB4

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

Preview Lab → · Contrast checker → · Palette generator →