#1B53B4#1B53B4

#1B53B4 is a mid, vivid blue. Relative luminance 0.097; OKLCH L 46.6% C 0.165 H 260.7°. Best body text is #FFFFFF at 7.14:1 contrast (WCAG AA passes).

Color values

HEX	#1B53B4
RGB	rgb(27, 83, 180)
HSL	hsl(218, 74%, 41%)
HSV	hsv(218, 85%, 71%)
CMYK	cmyk(85%, 53.9%, 0%, 29.4%)
CIE-LAB	lab(37.32, 19.45, -56.40)
CIE-LCH	lch(37.32, 59.66, 289.03°)
OKLab	oklab(46.63% -0.0266 -0.1628)
OKLCH	oklch(46.63% 0.165 260.7)
XYZ	xyz(11.7805, 9.7133, 44.4251)
Luminance	0.0972 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B53B4 #B47C1B

analogous

#1B9FB4 #1B53B4 #2F1BB4

triadic

#1B53B4 #B41B53 #53B41B

tetradic

#1B53B4 #B41B9F #B47C1B #1BB42F

square

#1B53B4 #B41B9F #B47C1B #1BB42F

split-complementary

#1B53B4 #B42F1B #9FB41B

monochromatic

#0B224A #133A7F #1B53B4 #2D6EDF #6293E7

Accessibility & contrast

On white

7.14

#1B53B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#1B53B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B53B4

7.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B53B4	#FFFFFF	#000000	##FFFFFF
##1B53B4	1.00	7.14	2.94	7.14
#FFFFFF	7.14	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FB7

Deuteranopia (green-blind)

#0051B2

Tritanopia (blue-blind)

#006B7B

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #1b53b4;
/* rgb */ color: rgb(27, 83, 180);
/* oklch */ color: oklch(46.6% 0.165 260.7);

Tailwind

colors: {
  custom: {
    50: '#7482cb',
    500: '#1b53b4',
    950: '#000000',
  },
}

SCSS

$custom: #1b53b4;
$custom-light: #7482cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b53b4",
  "rgb": {
    "r": 27,
    "g": 83,
    "b": 180
  },
  "hsl": {
    "h": 218.039,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.46626,
    "c": 0.16494,
    "h": 260.7
  },
  "luminance": 0.09715
}

Semantic roles & 50–950 ramp

primary

#1B53B4

secondary

#CCA45F

accent

#AD37F1

background

#F7F7FC

surface

#EEEEF9

border

#C9C9D2

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #1B53B4

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

Preview Lab → · Contrast checker → · Palette generator →