#1F52A9#1F52A9

#1F52A9 is a mid, vivid blue. Relative luminance 0.092; OKLCH L 45.7% C 0.150 H 260.4°. Best body text is #FFFFFF at 7.40:1 contrast (WCAG AA passes).

Color values

HEX	#1F52A9
RGB	rgb(31, 82, 169)
HSL	hsl(218, 69%, 39%)
HSV	hsv(218, 82%, 66%)
CMYK	cmyk(81.7%, 51.5%, 0%, 33.7%)
CIE-LAB	lab(36.35, 16.11, -51.46)
CIE-LCH	lch(36.35, 53.92, 287.38°)
OKLab	oklab(45.66% -0.025 -0.1482)
OKLCH	oklch(45.66% 0.15 260.4)
XYZ	xyz(10.7412, 9.1892, 38.7360)
Luminance	0.0919 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F52A9 #A9761F

analogous

#1F97A9 #1F52A9 #311FA9

triadic

#1F52A9 #A91F52 #52A91F

tetradic

#1F52A9 #A91F97 #A9761F #1FA931

square

#1F52A9 #A91F97 #A9761F #1FA931

split-complementary

#1F52A9 #A9311F #97A91F

monochromatic

#0C2042 #163975 #1F52A9 #2D6CD8 #6090E2

Accessibility & contrast

On white

7.40

#1F52A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#1F52A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F52A9

7.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F52A9	#FFFFFF	#000000	##FFFFFF
##1F52A9	1.00	7.40	2.84	7.40
#FFFFFF	7.40	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#195CAC

Deuteranopia (green-blind)

#0050A7

Tritanopia (blue-blind)

#006775

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1f52a9;
/* rgb */ color: rgb(31, 82, 169);
/* oklch */ color: oklch(45.7% 0.150 260.4);

Tailwind

colors: {
  custom: {
    50: '#7281c3',
    500: '#1f52a9',
    950: '#000000',
  },
}

SCSS

$custom: #1f52a9;
$custom-light: #7281c3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f52a9",
  "rgb": {
    "r": 31,
    "g": 82,
    "b": 169
  },
  "hsl": {
    "h": 217.826,
    "s": 69,
    "l": 39.216
  },
  "oklch": {
    "l": 0.45658,
    "c": 0.15031,
    "h": 260.4
  },
  "luminance": 0.0919
}

Semantic roles & 50–950 ramp

primary

#1F52A9

secondary

#C7A05D

accent

#AB3CEC

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#090A13

muted

#7B7C82

Preview Lab

Preview with #1F52A9

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

Preview Lab → · Contrast checker → · Palette generator →