#1C4EB4#1C4EB4

#1C4EB4 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.6% C 0.171 H 262.3°. Best body text is #FFFFFF at 7.50:1 contrast (WCAG AA passes).

Color values

HEX	#1C4EB4
RGB	rgb(28, 78, 180)
HSL	hsl(220, 73%, 41%)
HSV	hsv(220, 84%, 71%)
CMYK	cmyk(84.4%, 56.7%, 0%, 29.4%)
CIE-LAB	lab(35.96, 22.87, -58.61)
CIE-LCH	lch(35.96, 62.92, 291.32°)
OKLab	oklab(45.6% -0.0229 -0.1693)
OKLCH	oklch(45.6% 0.171 262.3)
XYZ	xyz(11.4385, 8.9895, 44.3034)
Luminance	0.0899 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4EB4 #B4821C

analogous

#1C9AB4 #1C4EB4 #361CB4

triadic

#1C4EB4 #B41C4E #4EB41C

tetradic

#1C4EB4 #B41C9A #B4821C #1CB436

square

#1C4EB4 #B41C9A #B4821C #1CB436

split-complementary

#1C4EB4 #B4361C #9AB41C

monochromatic

#0C204A #14377F #1C4EB4 #2F68DF #648FE7

Accessibility & contrast

On white

7.50

#1C4EB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#1C4EB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4EB4

7.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4EB4	#FFFFFF	#000000	##FFFFFF
##1C4EB4	1.00	7.50	2.80	7.50
#FFFFFF	7.50	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CB8

Deuteranopia (green-blind)

#004EB2

Tritanopia (blue-blind)

#006879

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1c4eb4;
/* rgb */ color: rgb(28, 78, 180);
/* oklch */ color: oklch(45.6% 0.171 262.3);

Tailwind

colors: {
  custom: {
    50: '#747ecb',
    500: '#1c4eb4',
    950: '#000000',
  },
}

SCSS

$custom: #1c4eb4;
$custom-light: #747ecb;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4eb4",
  "rgb": {
    "r": 28,
    "g": 78,
    "b": 180
  },
  "hsl": {
    "h": 220.263,
    "s": 73.077,
    "l": 40.784
  },
  "oklch": {
    "l": 0.45603,
    "c": 0.17089,
    "h": 262.3
  },
  "luminance": 0.08991
}

Semantic roles & 50–950 ramp

primary

#1C4EB4

secondary

#CCA860

accent

#B338F0

background

#F7F7FC

surface

#EEEEF9

border

#C9C9D2

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #1C4EB4

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

Preview Lab → · Contrast checker → · Palette generator →