#1F3D9D#1F3D9D

#1F3D9D is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.2% C 0.160 H 265.9°. Best body text is #FFFFFF at 9.49:1 contrast (WCAG AA passes).

Color values

HEX	#1F3D9D
RGB	rgb(31, 61, 157)
HSL	hsl(226, 67%, 37%)
HSV	hsv(226, 80%, 62%)
CMYK	cmyk(80.3%, 61.1%, 0%, 38.4%)
CIE-LAB	lab(29.57, 25.57, -55.26)
CIE-LCH	lch(29.57, 60.89, 294.83°)
OKLab	oklab(40.24% -0.0113 -0.1598)
OKLCH	oklch(40.24% 0.16 265.9)
XYZ	xyz(8.3175, 6.0621, 32.6235)
Luminance	0.0606 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3D9D #9D7F1F

analogous

#1F7C9D #1F3D9D #401F9D

triadic

#1F3D9D #9D1F3D #3D9D1F

tetradic

#1F3D9D #9D1F7C #9D7F1F #1F9D40

square

#1F3D9D #9D1F7C #9D7F1F #1F9D40

split-complementary

#1F3D9D #9D401F #7C9D1F

monochromatic

#0B1537 #15296A #1F3D9D #2951D0 #5878DE

Accessibility & contrast

On white

9.49

#1F3D9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#1F3D9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3D9D

9.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3D9D	#FFFFFF	#000000	##FFFFFF
##1F3D9D	1.00	9.49	2.21	9.49
#FFFFFF	9.49	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA0

Deuteranopia (green-blind)

#00409B

Tritanopia (blue-blind)

#005667

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1f3d9d;
/* rgb */ color: rgb(31, 61, 157);
/* oklch */ color: oklch(40.2% 0.160 265.9);

Tailwind

colors: {
  custom: {
    50: '#7072bb',
    500: '#1f3d9d',
    950: '#000000',
  },
}

SCSS

$custom: #1f3d9d;
$custom-light: #7072bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3d9d",
  "rgb": {
    "r": 31,
    "g": 61,
    "b": 157
  },
  "hsl": {
    "h": 225.714,
    "s": 67.021,
    "l": 36.863
  },
  "oklch": {
    "l": 0.40245,
    "c": 0.16017,
    "h": 265.9
  },
  "luminance": 0.06063
}

Semantic roles & 50–950 ramp

primary

#1F3D9D

secondary

#C2A856

accent

#C13EEA

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1F3D9D

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

Preview Lab → · Contrast checker → · Palette generator →