#1F1AB3#1F1AB3

#1F1AB3 is a dark, highly saturated blue. Relative luminance 0.043; OKLCH L 37.4% C 0.222 H 269.7°. Best body text is #FFFFFF at 11.31:1 contrast (WCAG AA passes).

Color values

HEX	#1F1AB3
RGB	rgb(31, 26, 179)
HSL	hsl(242, 75%, 40%)
HSV	hsv(242, 85%, 70%)
CMYK	cmyk(82.7%, 85.5%, 0%, 29.8%)
CIE-LAB	lab(24.59, 53.52, -76.74)
CIE-LCH	lch(24.59, 93.56, 304.89°)
OKLab	oklab(37.36% -0.0012 -0.2221)
OKLCH	oklch(37.36% 0.222 269.7)
XYZ	xyz(9.0684, 4.2837, 42.9880)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1AB3 #AEB31A

analogous

#1A61B3 #1F1AB3 #6C1AB3

triadic

#1F1AB3 #B31F1A #1AB31F

tetradic

#1F1AB3 #B31A61 #AEB31A #1AB36C

square

#1F1AB3 #B31A61 #AEB31A #1AB36C

split-complementary

#1F1AB3 #B36C1A #61B31A

monochromatic

#0C0A48 #16127E #1F1AB3 #302AE0 #6460E8

Accessibility & contrast

On white

11.31

#1F1AB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1F1AB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1AB3

11.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1AB3	#FFFFFF	#000000	##FFFFFF
##1F1AB3	1.00	11.31	1.86	11.31
#FFFFFF	11.31	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042B7

Deuteranopia (green-blind)

#0032B1

Tritanopia (blue-blind)

#004D6A

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1f1ab3;
/* rgb */ color: rgb(31, 26, 179);
/* oklch */ color: oklch(37.4% 0.222 269.7);

Tailwind

colors: {
  custom: {
    50: '#795dcb',
    500: '#1f1ab3',
    950: '#000000',
  },
}

SCSS

$custom: #1f1ab3;
$custom-light: #795dcb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1ab3",
  "rgb": {
    "r": 31,
    "g": 26,
    "b": 179
  },
  "hsl": {
    "h": 241.961,
    "s": 74.634,
    "l": 40.196
  },
  "oklch": {
    "l": 0.37356,
    "c": 0.22207,
    "h": 269.7
  },
  "luminance": 0.04285
}

Semantic roles & 50–950 ramp

primary

#1F1AB3

secondary

#C8CC5D

accent

#F137EB

background

#F8F5FC

surface

#EFE9F9

border

#CAC5D2

text

#0B0414

muted

#7C7982

Preview Lab

Preview with #1F1AB3

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

Preview Lab → · Contrast checker → · Palette generator →