#1F1AB4#1F1AB4

#1F1AB4 is a dark, highly saturated blue. Relative luminance 0.043; OKLCH L 37.5% C 0.223 H 269.6°. Best body text is #FFFFFF at 11.26:1 contrast (WCAG AA passes).

Color values

HEX	#1F1AB4
RGB	rgb(31, 26, 180)
HSL	hsl(242, 75%, 40%)
HSV	hsv(242, 86%, 71%)
CMYK	cmyk(82.8%, 85.6%, 0%, 29.4%)
CIE-LAB	lab(24.72, 53.82, -77.13)
CIE-LCH	lch(24.72, 94.05, 304.91°)
OKLab	oklab(37.48% -0.0014 -0.2232)
OKLCH	oklch(37.48% 0.223 269.6)
XYZ	xyz(9.1699, 4.3243, 43.5225)
Luminance	0.0432 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1AB4 #AFB41A

analogous

#1A62B4 #1F1AB4 #6C1AB4

triadic

#1F1AB4 #B41F1A #1AB41F

tetradic

#1F1AB4 #B41A62 #AFB41A #1AB46C

square

#1F1AB4 #B41A62 #AFB41A #1AB46C

split-complementary

#1F1AB4 #B46C1A #62B41A

monochromatic

#0D0B49 #16127F #1F1AB4 #312BE0 #6560E8

Accessibility & contrast

On white

11.26

#1F1AB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1F1AB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1AB4

11.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1AB4	#FFFFFF	#000000	##FFFFFF
##1F1AB4	1.00	11.26	1.87	11.26
#FFFFFF	11.26	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042B8

Deuteranopia (green-blind)

#0032B2

Tritanopia (blue-blind)

#004E6B

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1f1ab4;
/* rgb */ color: rgb(31, 26, 180);
/* oklch */ color: oklch(37.5% 0.223 269.6);

Tailwind

colors: {
  custom: {
    50: '#7a5dcc',
    500: '#1f1ab4',
    950: '#000000',
  },
}

SCSS

$custom: #1f1ab4;
$custom-light: #7a5dcc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1ab4",
  "rgb": {
    "r": 31,
    "g": 26,
    "b": 180
  },
  "hsl": {
    "h": 241.948,
    "s": 74.757,
    "l": 40.392
  },
  "oklch": {
    "l": 0.37479,
    "c": 0.22319,
    "h": 269.6
  },
  "luminance": 0.04325
}

Semantic roles & 50–950 ramp

primary

#1F1AB4

secondary

#C9CC5D

accent

#F136EB

background

#F8F5FC

surface

#EFE9F9

border

#CAC5D2

text

#0B0414

muted

#7C7982

Preview Lab

Preview with #1F1AB4

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

Preview Lab → · Contrast checker → · Palette generator →