#1F53A8#1F53A8

#1F53A8 is a mid, vivid blue. Relative luminance 0.093; OKLCH L 45.8% C 0.148 H 259.9°. Best body text is #FFFFFF at 7.34:1 contrast (WCAG AA passes).

Color values

HEX	#1F53A8
RGB	rgb(31, 83, 168)
HSL	hsl(217, 69%, 39%)
HSV	hsv(217, 82%, 66%)
CMYK	cmyk(81.5%, 50.6%, 0%, 34.1%)
CIE-LAB	lab(36.56, 15.04, -50.52)
CIE-LCH	lch(36.56, 52.71, 286.58°)
OKLab	oklab(45.8% -0.0259 -0.1454)
OKLCH	oklch(45.8% 0.148 259.9)
XYZ	xyz(10.7236, 9.3037, 38.2688)
Luminance	0.0930 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F53A8 #A8741F

analogous

#1F98A8 #1F53A8 #301FA8

triadic

#1F53A8 #A81F53 #53A81F

tetradic

#1F53A8 #A81F98 #A8741F #1FA830

square

#1F53A8 #A81F98 #A8741F #1FA830

split-complementary

#1F53A8 #A8301F #98A81F

monochromatic

#0C2041 #153974 #1F53A8 #2C6DD8 #6091E2

Accessibility & contrast

On white

7.34

#1F53A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#1F53A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F53A8

7.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F53A8	#FFFFFF	#000000	##FFFFFF
##1F53A8	1.00	7.34	2.86	7.34
#FFFFFF	7.34	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E5DAB

Deuteranopia (green-blind)

#0050A6

Tritanopia (blue-blind)

#006875

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1f53a8;
/* rgb */ color: rgb(31, 83, 168);
/* oklch */ color: oklch(45.8% 0.148 259.9);

Tailwind

colors: {
  custom: {
    50: '#7282c2',
    500: '#1f53a8',
    950: '#000000',
  },
}

SCSS

$custom: #1f53a8;
$custom-light: #7282c2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f53a8",
  "rgb": {
    "r": 31,
    "g": 83,
    "b": 168
  },
  "hsl": {
    "h": 217.226,
    "s": 68.844,
    "l": 39.02
  },
  "oklch": {
    "l": 0.45801,
    "c": 0.1477,
    "h": 259.9
  },
  "luminance": 0.09305
}

Semantic roles & 50–950 ramp

primary

#1F53A8

secondary

#C69E5D

accent

#A93CEC

background

#F7F7FC

surface

#EDEEF8

border

#C8C9D1

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F53A8

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

Preview Lab → · Contrast checker → · Palette generator →