#1B56B4#1B56B4

#1B56B4 is a mid, vivid blue. Relative luminance 0.102; OKLCH L 47.3% C 0.161 H 259.8°. Best body text is #FFFFFF at 6.92:1 contrast (WCAG AA passes).

Color values

HEX	#1B56B4
RGB	rgb(27, 86, 180)
HSL	hsl(217, 74%, 41%)
HSV	hsv(217, 85%, 71%)
CMYK	cmyk(85%, 52.2%, 0%, 29.4%)
CIE-LAB	lab(38.17, 17.46, -55.03)
CIE-LCH	lch(38.17, 57.73, 287.60°)
OKLab	oklab(47.27% -0.0286 -0.1587)
OKLCH	oklch(47.27% 0.161 259.8)
XYZ	xyz(12.0150, 10.1824, 44.5033)
Luminance	0.1018 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B56B4 #B4791B

analogous

#1BA2B4 #1B56B4 #2D1BB4

triadic

#1B56B4 #B41B56 #56B41B

tetradic

#1B56B4 #B41BA2 #B4791B #1BB42D

square

#1B56B4 #B41BA2 #B4791B #1BB42D

split-complementary

#1B56B4 #B42D1B #A2B41B

monochromatic

#0B234A #133D7F #1B56B4 #2D72DF #6295E7

Accessibility & contrast

On white

6.92

#1B56B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#1B56B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B56B4

6.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B56B4	#FFFFFF	#000000	##FFFFFF
##1B56B4	1.00	6.92	3.04	6.92
#FFFFFF	6.92	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1261B7

Deuteranopia (green-blind)

#0053B2

Tritanopia (blue-blind)

#006D7C

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #1b56b4;
/* rgb */ color: rgb(27, 86, 180);
/* oklch */ color: oklch(47.3% 0.161 259.8);

Tailwind

colors: {
  custom: {
    50: '#7484cb',
    500: '#1b56b4',
    950: '#000000',
  },
}

SCSS

$custom: #1b56b4;
$custom-light: #7484cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b56b4",
  "rgb": {
    "r": 27,
    "g": 86,
    "b": 180
  },
  "hsl": {
    "h": 216.863,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.47269,
    "c": 0.16125,
    "h": 259.8
  },
  "luminance": 0.10184
}

Semantic roles & 50–950 ramp

primary

#1B56B4

secondary

#CCA25F

accent

#A937F1

background

#F7F8FC

surface

#EEEFF9

border

#C9CAD2

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #1B56B4

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

Preview Lab → · Contrast checker → · Palette generator →