#1B4FD2#1B4FD2

#1B4FD2 is a mid, highly saturated blue. Relative luminance 0.105; OKLCH L 48.4% C 0.209 H 263.7°. Best body text is #FFFFFF at 6.78:1 contrast (WCAG AA passes).

Color values

HEX	#1B4FD2
RGB	rgb(27, 79, 210)
HSL	hsl(223, 77%, 46%)
HSV	hsv(223, 87%, 82%)
CMYK	cmyk(87.1%, 62.4%, 0%, 17.6%)
CIE-LAB	lab(38.68, 33.75, -71.66)
CIE-LCH	lch(38.68, 79.22, 295.22°)
OKLab	oklab(48.4% -0.0228 -0.2076)
OKLCH	oklch(48.4% 0.209 263.7)
XYZ	xyz(14.8767, 10.4762, 62.1983)
Luminance	0.1048 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4FD2 #D29E1B

analogous

#1BABD2 #1B4FD2 #431BD2

triadic

#1B4FD2 #D21B4F #4FD21B

tetradic

#1B4FD2 #D21BAB #D29E1B #1BD243

square

#1B4FD2 #D21BAB #D29E1B #1BD243

split-complementary

#1B4FD2 #D2431B #ABD21B

monochromatic

#0D2666 #143B9C #1B4FD2 #4372E7 #7A9BEE

Accessibility & contrast

On white

6.78

#1B4FD2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#1B4FD2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B4FD2

6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4FD2	#FFFFFF	#000000	##FFFFFF
##1B4FD2	1.00	6.78	3.10	6.78
#FFFFFF	6.78	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064D6

Deuteranopia (green-blind)

#0053D0

Tritanopia (blue-blind)

#007289

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #1b4fd2;
/* rgb */ color: rgb(27, 79, 210);
/* oklch */ color: oklch(48.4% 0.209 263.7);

Tailwind

colors: {
  custom: {
    50: '#7c7fe1',
    500: '#1b4fd2',
    950: '#000000',
  },
}

SCSS

$custom: #1b4fd2;
$custom-light: #7c7fe1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4fd2",
  "rgb": {
    "r": 27,
    "g": 79,
    "b": 210
  },
  "hsl": {
    "h": 222.951,
    "s": 77.215,
    "l": 46.471
  },
  "oklch": {
    "l": 0.48402,
    "c": 0.20888,
    "h": 263.7
  },
  "luminance": 0.10478
}

Semantic roles & 50–950 ramp

primary

#1B4FD2

secondary

#D5BA73

accent

#BD34F4

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #1B4FD2

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

Preview Lab → · Contrast checker → · Palette generator →