#1F52A8#1F52A8

#1F52A8 is a mid, vivid blue. Relative luminance 0.092; OKLCH L 45.6% C 0.149 H 260.3°. Best body text is #FFFFFF at 7.42:1 contrast (WCAG AA passes).

Color values

HEX	#1F52A8
RGB	rgb(31, 82, 168)
HSL	hsl(218, 69%, 39%)
HSV	hsv(218, 82%, 66%)
CMYK	cmyk(81.5%, 51.2%, 0%, 34.1%)
CIE-LAB	lab(36.27, 15.71, -50.98)
CIE-LCH	lch(36.27, 53.35, 287.13°)
OKLab	oklab(45.58% -0.0251 -0.1468)
OKLCH	oklch(45.58% 0.149 260.3)
XYZ	xyz(10.6477, 9.1518, 38.2435)
Luminance	0.0915 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F52A8 #A8751F

analogous

#1F97A8 #1F52A8 #311FA8

triadic

#1F52A8 #A81F52 #52A81F

tetradic

#1F52A8 #A81F97 #A8751F #1FA831

square

#1F52A8 #A81F97 #A8751F #1FA831

split-complementary

#1F52A8 #A8311F #97A81F

monochromatic

#0C2041 #153974 #1F52A8 #2C6CD8 #6090E2

Accessibility & contrast

On white

7.42

#1F52A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#1F52A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F52A8

7.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F52A8	#FFFFFF	#000000	##FFFFFF
##1F52A8	1.00	7.42	2.83	7.42
#FFFFFF	7.42	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B5CAB

Deuteranopia (green-blind)

#004FA6

Tritanopia (blue-blind)

#006775

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1f52a8;
/* rgb */ color: rgb(31, 82, 168);
/* oklch */ color: oklch(45.6% 0.149 260.3);

Tailwind

colors: {
  custom: {
    50: '#7281c2',
    500: '#1f52a8',
    950: '#000000',
  },
}

SCSS

$custom: #1f52a8;
$custom-light: #7281c2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f52a8",
  "rgb": {
    "r": 31,
    "g": 82,
    "b": 168
  },
  "hsl": {
    "h": 217.664,
    "s": 68.844,
    "l": 39.02
  },
  "oklch": {
    "l": 0.45581,
    "c": 0.14894,
    "h": 260.3
  },
  "luminance": 0.09153
}

Semantic roles & 50–950 ramp

primary

#1F52A8

secondary

#C69F5D

accent

#AA3CEC

background

#F7F7FC

surface

#EDEEF8

border

#C8C9D1

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F52A8

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

Preview Lab → · Contrast checker → · Palette generator →