#1F52A1#1F52A1

#1F52A1 is a mid, vivid blue. Relative luminance 0.089; OKLCH L 45.1% C 0.139 H 259.2°. Best body text is #FFFFFF at 7.55:1 contrast (WCAG AA passes).

Color values

HEX	#1F52A1
RGB	rgb(31, 82, 161)
HSL	hsl(216, 68%, 38%)
HSV	hsv(216, 81%, 63%)
CMYK	cmyk(80.7%, 49.1%, 0%, 36.9%)
CIE-LAB	lab(35.79, 12.93, -47.59)
CIE-LCH	lch(35.79, 49.31, 285.20°)
OKLab	oklab(45.05% -0.0261 -0.1368)
OKLCH	oklch(45.05% 0.139 259.2)
XYZ	xyz(10.0130, 8.8979, 34.9010)
Luminance	0.0890 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F52A1 #A16E1F

analogous

#1F93A1 #1F52A1 #2D1FA1

triadic

#1F52A1 #A11F52 #52A11F

tetradic

#1F52A1 #A11F93 #A16E1F #1FA12D

square

#1F52A1 #A11F93 #A16E1F #1FA12D

split-complementary

#1F52A1 #A12D1F #93A11F

monochromatic

#0B1E3A #15386E #1F52A1 #296CD4 #5B8FDF

Accessibility & contrast

On white

7.55

#1F52A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#1F52A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F52A1

7.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F52A1	#FFFFFF	#000000	##FFFFFF
##1F52A1	1.00	7.55	2.78	7.55
#FFFFFF	7.55	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#245AA4

Deuteranopia (green-blind)

#004F9F

Tritanopia (blue-blind)

#006572

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1f52a1;
/* rgb */ color: rgb(31, 82, 161);
/* oklch */ color: oklch(45.1% 0.139 259.2);

Tailwind

colors: {
  custom: {
    50: '#7082bd',
    500: '#1f52a1',
    950: '#000000',
  },
}

SCSS

$custom: #1f52a1;
$custom-light: #7082bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1f52a1",
  "rgb": {
    "r": 31,
    "g": 82,
    "b": 161
  },
  "hsl": {
    "h": 216.462,
    "s": 67.708,
    "l": 37.647
  },
  "oklch": {
    "l": 0.45051,
    "c": 0.13929,
    "h": 259.2
  },
  "luminance": 0.08899
}

Semantic roles & 50–950 ramp

primary

#1F52A1

secondary

#C49958

accent

#A73DEB

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F52A1

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

Preview Lab → · Contrast checker → · Palette generator →