#1F1CAA#1F1CAA

#1F1CAA is a dark, highly saturated blue. Relative luminance 0.040; OKLCH L 36.5% C 0.211 H 270.1°. Best body text is #FFFFFF at 11.64:1 contrast (WCAG AA passes).

Color values

HEX	#1F1CAA
RGB	rgb(31, 28, 170)
HSL	hsl(241, 72%, 39%)
HSV	hsv(241, 84%, 67%)
CMYK	cmyk(81.8%, 83.5%, 0%, 33.3%)
CIE-LAB	lab(23.75, 49.91, -72.73)
CIE-LCH	lch(23.75, 88.21, 304.46°)
OKLab	oklab(36.45% 0.0005 -0.2105)
OKLCH	oklch(36.45% 0.211 270.1)
XYZ	xyz(8.2336, 4.0231, 38.3650)
Luminance	0.0402 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1CAA #A7AA1C

analogous

#1C60AA #1F1CAA #661CAA

triadic

#1F1CAA #AA1F1C #1CAA1F

tetradic

#1F1CAA #AA1C60 #A7AA1C #1CAA66

square

#1F1CAA #AA1C60 #A7AA1C #1CAA66

split-complementary

#1F1CAA #AA661C #60AA1C

monochromatic

#0C0B41 #151375 #1F1CAA #2B28DC #5F5CE4

Accessibility & contrast

On white

11.64

#1F1CAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1F1CAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1CAA

11.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1CAA	#FFFFFF	#000000	##FFFFFF
##1F1CAA	1.00	11.64	1.80	11.64
#FFFFFF	11.64	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040AE

Deuteranopia (green-blind)

#0031A8

Tritanopia (blue-blind)

#004A65

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1f1caa;
/* rgb */ color: rgb(31, 28, 170);
/* oklch */ color: oklch(36.5% 0.211 270.1);

Tailwind

colors: {
  custom: {
    50: '#775dc5',
    500: '#1f1caa',
    950: '#000000',
  },
}

SCSS

$custom: #1f1caa;
$custom-light: #775dc5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1caa",
  "rgb": {
    "r": 31,
    "g": 28,
    "b": 170
  },
  "hsl": {
    "h": 241.268,
    "s": 71.717,
    "l": 38.824
  },
  "oklch": {
    "l": 0.36454,
    "c": 0.21052,
    "h": 270.1
  },
  "luminance": 0.04024
}

Semantic roles & 50–950 ramp

primary

#1F1CAA

secondary

#C6C85A

accent

#EE39EB

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0413

muted

#7C7982

Preview Lab

Preview with #1F1CAA

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

Preview Lab → · Contrast checker → · Palette generator →