#1F52A0#1F52A0

#1F52A0 is a dark, vivid blue. Relative luminance 0.089; OKLCH L 45.0% C 0.138 H 259.0°. Best body text is #FFFFFF at 7.57:1 contrast (WCAG AA passes).

Color values

HEX	#1F52A0
RGB	rgb(31, 82, 160)
HSL	hsl(216, 68%, 37%)
HSV	hsv(216, 81%, 63%)
CMYK	cmyk(80.6%, 48.8%, 0%, 37.3%)
CIE-LAB	lab(35.72, 12.53, -47.10)
CIE-LCH	lch(35.72, 48.73, 284.89°)
OKLab	oklab(44.98% -0.0263 -0.1354)
OKLCH	oklch(44.98% 0.138 259)
XYZ	xyz(9.9252, 8.8628, 34.4385)
Luminance	0.0886 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F52A0 #A06D1F

analogous

#1F93A0 #1F52A0 #2D1FA0

triadic

#1F52A0 #A01F52 #52A01F

tetradic

#1F52A0 #A01F93 #A06D1F #1FA02D

square

#1F52A0 #A01F93 #A06D1F #1FA02D

split-complementary

#1F52A0 #A02D1F #93A01F

monochromatic

#0B1D39 #15386D #1F52A0 #296CD3 #5A8FDF

Accessibility & contrast

On white

7.57

#1F52A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#1F52A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F52A0

7.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F52A0	#FFFFFF	#000000	##FFFFFF
##1F52A0	1.00	7.57	2.77	7.57
#FFFFFF	7.57	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#255AA3

Deuteranopia (green-blind)

#004F9E

Tritanopia (blue-blind)

#006571

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1f52a0;
/* rgb */ color: rgb(31, 82, 160);
/* oklch */ color: oklch(45.0% 0.138 259.0);

Tailwind

colors: {
  custom: {
    50: '#7082bd',
    500: '#1f52a0',
    950: '#000000',
  },
}

SCSS

$custom: #1f52a0;
$custom-light: #7082bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1f52a0",
  "rgb": {
    "r": 31,
    "g": 82,
    "b": 160
  },
  "hsl": {
    "h": 216.279,
    "s": 67.539,
    "l": 37.451
  },
  "oklch": {
    "l": 0.44977,
    "c": 0.1379,
    "h": 259
  },
  "luminance": 0.08864
}

Semantic roles & 50–950 ramp

primary

#1F52A0

secondary

#C39958

accent

#A63DEA

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F52A0

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

Preview Lab → · Contrast checker → · Palette generator →