#1F52A4#1F52A4

#1F52A4 is a mid, vivid blue. Relative luminance 0.090; OKLCH L 45.3% C 0.143 H 259.7°. Best body text is #FFFFFF at 7.50:1 contrast (WCAG AA passes).

Color values

HEX	#1F52A4
RGB	rgb(31, 82, 164)
HSL	hsl(217, 68%, 38%)
HSV	hsv(217, 81%, 64%)
CMYK	cmyk(81.1%, 50%, 0%, 35.7%)
CIE-LAB	lab(35.99, 14.12, -49.05)
CIE-LCH	lch(35.99, 51.04, 286.06°)
OKLab	oklab(45.28% -0.0257 -0.1411)
OKLCH	oklch(45.28% 0.143 259.7)
XYZ	xyz(10.2808, 9.0050, 36.3111)
Luminance	0.0901 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F52A4 #A4711F

analogous

#1F94A4 #1F52A4 #2E1FA4

triadic

#1F52A4 #A41F52 #52A41F

tetradic

#1F52A4 #A41F94 #A4711F #1FA42E

square

#1F52A4 #A41F94 #A4711F #1FA42E

split-complementary

#1F52A4 #A42E1F #94A41F

monochromatic

#0C1F3D #153871 #1F52A4 #2A6CD7 #5D8FE0

Accessibility & contrast

On white

7.50

#1F52A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#1F52A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F52A4

7.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F52A4	#FFFFFF	#000000	##FFFFFF
##1F52A4	1.00	7.50	2.80	7.50
#FFFFFF	7.50	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#215BA7

Deuteranopia (green-blind)

#004FA2

Tritanopia (blue-blind)

#006673

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1f52a4;
/* rgb */ color: rgb(31, 82, 164);
/* oklch */ color: oklch(45.3% 0.143 259.7);

Tailwind

colors: {
  custom: {
    50: '#7182bf',
    500: '#1f52a4',
    950: '#000000',
  },
}

SCSS

$custom: #1f52a4;
$custom-light: #7182bf;
$custom-dark: #000000;

JSON

{
  "hex": "#1f52a4",
  "rgb": {
    "r": 31,
    "g": 82,
    "b": 164
  },
  "hsl": {
    "h": 216.992,
    "s": 68.205,
    "l": 38.235
  },
  "oklch": {
    "l": 0.45276,
    "c": 0.14344,
    "h": 259.7
  },
  "luminance": 0.09006
}

Semantic roles & 50–950 ramp

primary

#1F52A4

secondary

#C59C5A

accent

#A83DEB

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F52A4

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

Preview Lab → · Contrast checker → · Palette generator →