#1F1CB1#1F1CB1

#1F1CB1 is a dark, highly saturated blue. Relative luminance 0.043; OKLCH L 37.3% C 0.218 H 269.7°. Best body text is #FFFFFF at 11.30:1 contrast (WCAG AA passes).

Color values

HEX	#1F1CB1
RGB	rgb(31, 28, 177)
HSL	hsl(241, 73%, 40%)
HSV	hsv(241, 84%, 69%)
CMYK	cmyk(82.5%, 84.2%, 0%, 30.6%)
CIE-LAB	lab(24.62, 52.06, -75.48)
CIE-LCH	lch(24.62, 91.70, 304.59°)
OKLab	oklab(37.31% -0.001 -0.2185)
OKLCH	oklch(37.31% 0.218 269.7)
XYZ	xyz(8.9134, 4.2951, 41.9457)
Luminance	0.0430 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1CB1 #AEB11C

analogous

#1C63B1 #1F1CB1 #691CB1

triadic

#1F1CB1 #B11F1C #1CB11F

tetradic

#1F1CB1 #B11C63 #AEB11C #1CB169

square

#1F1CB1 #B11C63 #AEB11C #1CB169

split-complementary

#1F1CB1 #B1691C #63B11C

monochromatic

#0C0B47 #16147C #1F1CB1 #302CDE #6461E6

Accessibility & contrast

On white

11.30

#1F1CB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1F1CB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1CB1

11.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1CB1	#FFFFFF	#000000	##FFFFFF
##1F1CB1	1.00	11.30	1.86	11.30
#FFFFFF	11.30	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042B5

Deuteranopia (green-blind)

#0032AF

Tritanopia (blue-blind)

#004D69

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1f1cb1;
/* rgb */ color: rgb(31, 28, 177);
/* oklch */ color: oklch(37.3% 0.218 269.7);

Tailwind

colors: {
  custom: {
    50: '#795dca',
    500: '#1f1cb1',
    950: '#000000',
  },
}

SCSS

$custom: #1f1cb1;
$custom-light: #795dca;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1cb1",
  "rgb": {
    "r": 31,
    "g": 28,
    "b": 177
  },
  "hsl": {
    "h": 241.208,
    "s": 72.683,
    "l": 40.196
  },
  "oklch": {
    "l": 0.37308,
    "c": 0.21848,
    "h": 269.7
  },
  "luminance": 0.04296
}

Semantic roles & 50–950 ramp

primary

#1F1CB1

secondary

#C8CB5E

accent

#EF38EC

background

#F8F5FC

surface

#EFE9F9

border

#CAC5D2

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #1F1CB1

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

Preview Lab → · Contrast checker → · Palette generator →