#1D53B3#1D53B3

#1D53B3 is a mid, vivid blue. Relative luminance 0.097; OKLCH L 46.6% C 0.163 H 261.0°. Best body text is #FFFFFF at 7.14:1 contrast (WCAG AA passes).

Color values

HEX	#1D53B3
RGB	rgb(29, 83, 179)
HSL	hsl(218, 72%, 41%)
HSV	hsv(218, 84%, 70%)
CMYK	cmyk(83.8%, 53.6%, 0%, 29.8%)
CIE-LAB	lab(37.30, 19.22, -55.85)
CIE-LCH	lch(37.30, 59.06, 288.99°)
OKLab	oklab(46.6% -0.0256 -0.1611)
OKLCH	oklch(46.6% 0.163 261)
XYZ	xyz(11.7337, 9.7009, 43.8931)
Luminance	0.0970 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D53B3 #B37D1D

analogous

#1D9EB3 #1D53B3 #321DB3

triadic

#1D53B3 #B31D53 #53B31D

tetradic

#1D53B3 #B31D9E #B37D1D #1DB332

square

#1D53B3 #B31D9E #B37D1D #1DB332

split-complementary

#1D53B3 #B3321D #9EB31D

monochromatic

#0C224A #143B7E #1D53B3 #306EDD #6493E6

Accessibility & contrast

On white

7.14

#1D53B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#1D53B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D53B3

7.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D53B3	#FFFFFF	#000000	##FFFFFF
##1D53B3	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)

#025FB6

Deuteranopia (green-blind)

#0051B1

Tritanopia (blue-blind)

#006B7B

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #1d53b3;
/* rgb */ color: rgb(29, 83, 179);
/* oklch */ color: oklch(46.6% 0.163 261.0);

Tailwind

colors: {
  custom: {
    50: '#7482ca',
    500: '#1d53b3',
    950: '#000000',
  },
}

SCSS

$custom: #1d53b3;
$custom-light: #7482ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1d53b3",
  "rgb": {
    "r": 29,
    "g": 83,
    "b": 179
  },
  "hsl": {
    "h": 218.4,
    "s": 72.115,
    "l": 40.784
  },
  "oklch": {
    "l": 0.466,
    "c": 0.16315,
    "h": 261
  },
  "luminance": 0.09702
}

Semantic roles & 50–950 ramp

primary

#1D53B3

secondary

#CBA561

accent

#AD39EF

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #1D53B3

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

Preview Lab → · Contrast checker → · Palette generator →