#1C4DB3#1C4DB3

#1C4DB3 is a mid, vivid blue. Relative luminance 0.088; OKLCH L 45.3% C 0.171 H 262.5°. Best body text is #FFFFFF at 7.60:1 contrast (WCAG AA passes).

Color values

HEX	#1C4DB3
RGB	rgb(28, 77, 179)
HSL	hsl(221, 73%, 41%)
HSV	hsv(221, 84%, 70%)
CMYK	cmyk(84.4%, 57%, 0%, 29.8%)
CIE-LAB	lab(35.61, 23.15, -58.59)
CIE-LCH	lch(35.61, 63.00, 291.56°)
OKLab	oklab(45.31% -0.0224 -0.1693)
OKLCH	oklch(45.31% 0.171 262.5)
XYZ	xyz(11.2665, 8.8079, 43.7454)
Luminance	0.0881 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4DB3 #B3821C

analogous

#1C98B3 #1C4DB3 #371CB3

triadic

#1C4DB3 #B31C4D #4DB31C

tetradic

#1C4DB3 #B31C98 #B3821C #1CB337

square

#1C4DB3 #B31C98 #B3821C #1CB337

split-complementary

#1C4DB3 #B3371C #98B31C

monochromatic

#0B1F49 #14367E #1C4DB3 #2E67DE #638EE7

Accessibility & contrast

On white

7.60

#1C4DB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.76

#1C4DB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4DB3

7.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4DB3	#FFFFFF	#000000	##FFFFFF
##1C4DB3	1.00	7.60	2.76	7.60
#FFFFFF	7.60	1.00	21.00	1.00
#000000	2.76	21.00	1.00	21.00
##FFFFFF	7.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BB6

Deuteranopia (green-blind)

#004DB1

Tritanopia (blue-blind)

#006778

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1c4db3;
/* rgb */ color: rgb(28, 77, 179);
/* oklch */ color: oklch(45.3% 0.171 262.5);

Tailwind

colors: {
  custom: {
    50: '#747ecb',
    500: '#1c4db3',
    950: '#000000',
  },
}

SCSS

$custom: #1c4db3;
$custom-light: #747ecb;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4db3",
  "rgb": {
    "r": 28,
    "g": 77,
    "b": 179
  },
  "hsl": {
    "h": 220.53,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.45313,
    "c": 0.17079,
    "h": 262.5
  },
  "luminance": 0.08809
}

Semantic roles & 50–950 ramp

primary

#1C4DB3

secondary

#CBA85F

accent

#B438F0

background

#F7F7FC

surface

#EEEEF9

border

#C9C9D2

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #1C4DB3

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

Preview Lab → · Contrast checker → · Palette generator →