#1F53A9#1F53A9

#1F53A9 is a mid, vivid blue. Relative luminance 0.093; OKLCH L 45.9% C 0.149 H 260.1°. Best body text is #FFFFFF at 7.32:1 contrast (WCAG AA passes).

Color values

HEX	#1F53A9
RGB	rgb(31, 83, 169)
HSL	hsl(217, 69%, 39%)
HSV	hsv(217, 82%, 66%)
CMYK	cmyk(81.7%, 50.9%, 0%, 33.7%)
CIE-LAB	lab(36.63, 15.44, -51.00)
CIE-LCH	lch(36.63, 53.28, 286.84°)
OKLab	oklab(45.88% -0.0257 -0.1468)
OKLCH	oklch(45.88% 0.149 260.1)
XYZ	xyz(10.8172, 9.3411, 38.7613)
Luminance	0.0934 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F53A9 #A9751F

analogous

#1F98A9 #1F53A9 #301FA9

triadic

#1F53A9 #A91F53 #53A91F

tetradic

#1F53A9 #A91F98 #A9751F #1FA930

square

#1F53A9 #A91F98 #A9751F #1FA930

split-complementary

#1F53A9 #A9301F #98A91F

monochromatic

#0C2042 #163A75 #1F53A9 #2D6DD8 #6091E2

Accessibility & contrast

On white

7.32

#1F53A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#1F53A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F53A9

7.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F53A9	#FFFFFF	#000000	##FFFFFF
##1F53A9	1.00	7.32	2.87	7.32
#FFFFFF	7.32	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C5DAC

Deuteranopia (green-blind)

#0050A7

Tritanopia (blue-blind)

#006876

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1f53a9;
/* rgb */ color: rgb(31, 83, 169);
/* oklch */ color: oklch(45.9% 0.149 260.1);

Tailwind

colors: {
  custom: {
    50: '#7282c3',
    500: '#1f53a9',
    950: '#000000',
  },
}

SCSS

$custom: #1f53a9;
$custom-light: #7282c3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f53a9",
  "rgb": {
    "r": 31,
    "g": 83,
    "b": 169
  },
  "hsl": {
    "h": 217.391,
    "s": 69,
    "l": 39.216
  },
  "oklch": {
    "l": 0.45877,
    "c": 0.14908,
    "h": 260.1
  },
  "luminance": 0.09342
}

Semantic roles & 50–950 ramp

primary

#1F53A9

secondary

#C79F5D

accent

#AA3CEC

background

#F7F7FC

surface

#EDEEF8

border

#C8C9D1

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F53A9

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

Preview Lab → · Contrast checker → · Palette generator →