#1F53C3#1F53C3

#1F53C3 is a mid, vivid blue. Relative luminance 0.104; OKLCH L 48.0% C 0.184 H 262.8°. Best body text is #FFFFFF at 6.81:1 contrast (WCAG AA passes).

Color values

HEX	#1F53C3
RGB	rgb(31, 83, 195)
HSL	hsl(221, 73%, 44%)
HSV	hsv(221, 84%, 76%)
CMYK	cmyk(84.1%, 57.4%, 0%, 23.5%)
CIE-LAB	lab(38.58, 25.65, -63.14)
CIE-LCH	lch(38.58, 68.15, 292.11°)
OKLab	oklab(47.97% -0.0232 -0.1825)
OKLCH	oklch(47.97% 0.184 262.8)
XYZ	xyz(13.5051, 10.4163, 52.9179)
Luminance	0.1042 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F53C3 #C38F1F

analogous

#1FA5C3 #1F53C3 #3D1FC3

triadic

#1F53C3 #C31F53 #53C31F

tetradic

#1F53C3 #C31FA5 #C38F1F #1FC33D

square

#1F53C3 #C31FA5 #C38F1F #1FC33D

split-complementary

#1F53C3 #C33D1F #A5C31F

monochromatic

#0E2659 #173D8E #1F53C3 #3F72E0 #7499E9

Accessibility & contrast

On white

6.81

#1F53C3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#1F53C3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F53C3

6.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F53C3	#FFFFFF	#000000	##FFFFFF
##1F53C3	1.00	6.81	3.08	6.81
#FFFFFF	6.81	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063C7

Deuteranopia (green-blind)

#0054C1

Tritanopia (blue-blind)

#006F83

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #1f53c3;
/* rgb */ color: rgb(31, 83, 195);
/* oklch */ color: oklch(48.0% 0.184 262.8);

Tailwind

colors: {
  custom: {
    50: '#7982d6',
    500: '#1f53c3',
    950: '#000000',
  },
}

SCSS

$custom: #1f53c3;
$custom-light: #7982d6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f53c3",
  "rgb": {
    "r": 31,
    "g": 83,
    "b": 195
  },
  "hsl": {
    "h": 220.976,
    "s": 72.566,
    "l": 44.314
  },
  "oklch": {
    "l": 0.47968,
    "c": 0.18401,
    "h": 262.8
  },
  "luminance": 0.10418
}

Semantic roles & 50–950 ramp

primary

#1F53C3

secondary

#D0B16E

accent

#B539EF

background

#F8F7FD

surface

#EFEEFA

border

#CAC9D3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #1F53C3

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

Preview Lab → · Contrast checker → · Palette generator →