#1F41A1#1F41A1

#1F41A1 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.4% C 0.161 H 265.1°. Best body text is #FFFFFF at 9.02:1 contrast (WCAG AA passes).

Color values

HEX	#1F41A1
RGB	rgb(31, 65, 161)
HSL	hsl(224, 68%, 38%)
HSV	hsv(224, 81%, 63%)
CMYK	cmyk(80.7%, 59.6%, 0%, 36.9%)
CIE-LAB	lab(30.98, 24.42, -55.38)
CIE-LCH	lch(30.98, 60.52, 293.80°)
OKLab	oklab(41.4% -0.0138 -0.16)
OKLCH	oklch(41.4% 0.161 265.1)
XYZ	xyz(8.8861, 6.6441, 34.5254)
Luminance	0.0664 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F41A1 #A17F1F

analogous

#1F82A1 #1F41A1 #3E1FA1

triadic

#1F41A1 #A11F41 #41A11F

tetradic

#1F41A1 #A11F82 #A17F1F #1FA13E

square

#1F41A1 #A11F82 #A17F1F #1FA13E

split-complementary

#1F41A1 #A13E1F #82A11F

monochromatic

#0B183A #152C6E #1F41A1 #2956D4 #5B7EDF

Accessibility & contrast

On white

9.02

#1F41A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#1F41A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F41A1

9.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F41A1	#FFFFFF	#000000	##FFFFFF
##1F41A1	1.00	9.02	2.33	9.02
#FFFFFF	9.02	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA4

Deuteranopia (green-blind)

#00439F

Tritanopia (blue-blind)

#00596A

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1f41a1;
/* rgb */ color: rgb(31, 65, 161);
/* oklch */ color: oklch(41.4% 0.161 265.1);

Tailwind

colors: {
  custom: {
    50: '#7175be',
    500: '#1f41a1',
    950: '#000000',
  },
}

SCSS

$custom: #1f41a1;
$custom-light: #7175be;
$custom-dark: #000000;

JSON

{
  "hex": "#1f41a1",
  "rgb": {
    "r": 31,
    "g": 65,
    "b": 161
  },
  "hsl": {
    "h": 224.308,
    "s": 67.708,
    "l": 37.647
  },
  "oklch": {
    "l": 0.41405,
    "c": 0.16064,
    "h": 265.1
  },
  "luminance": 0.06645
}

Semantic roles & 50–950 ramp

primary

#1F41A1

secondary

#C4A758

accent

#BD3DEB

background

#F7F7FB

surface

#EDEDF7

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1F41A1

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

Preview Lab → · Contrast checker → · Palette generator →