#1F41A0#1F41A0

#1F41A0 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.3% C 0.159 H 265.0°. Best body text is #FFFFFF at 9.04:1 contrast (WCAG AA passes).

Color values

HEX	#1F41A0
RGB	rgb(31, 65, 160)
HSL	hsl(224, 68%, 37%)
HSV	hsv(224, 81%, 63%)
CMYK	cmyk(80.6%, 59.4%, 0%, 37.3%)
CIE-LAB	lab(30.90, 24.03, -54.91)
CIE-LCH	lch(30.90, 59.94, 293.63°)
OKLab	oklab(41.32% -0.0138 -0.1587)
OKLCH	oklch(41.32% 0.159 265)
XYZ	xyz(8.7983, 6.6089, 34.0628)
Luminance	0.0661 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F41A0 #A07E1F

analogous

#1F82A0 #1F41A0 #3E1FA0

triadic

#1F41A0 #A01F41 #41A01F

tetradic

#1F41A0 #A01F82 #A07E1F #1FA03E

square

#1F41A0 #A01F82 #A07E1F #1FA03E

split-complementary

#1F41A0 #A03E1F #82A01F

monochromatic

#0B1739 #152C6D #1F41A0 #2956D3 #5A7DDF

Accessibility & contrast

On white

9.04

#1F41A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#1F41A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F41A0

9.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F41A0	#FFFFFF	#000000	##FFFFFF
##1F41A0	1.00	9.04	2.32	9.04
#FFFFFF	9.04	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA3

Deuteranopia (green-blind)

#00439E

Tritanopia (blue-blind)

#00596A

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1f41a0;
/* rgb */ color: rgb(31, 65, 160);
/* oklch */ color: oklch(41.3% 0.159 265.0);

Tailwind

colors: {
  custom: {
    50: '#7175bd',
    500: '#1f41a0',
    950: '#000000',
  },
}

SCSS

$custom: #1f41a0;
$custom-light: #7175bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1f41a0",
  "rgb": {
    "r": 31,
    "g": 65,
    "b": 160
  },
  "hsl": {
    "h": 224.186,
    "s": 67.539,
    "l": 37.451
  },
  "oklch": {
    "l": 0.41318,
    "c": 0.15927,
    "h": 265
  },
  "luminance": 0.0661
}

Semantic roles & 50–950 ramp

primary

#1F41A0

secondary

#C3A758

accent

#BD3DEA

background

#F7F7FB

surface

#EDEDF7

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1F41A0

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

Preview Lab → · Contrast checker → · Palette generator →