#1F1CA0#1F1CA0

#1F1CA0 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 35.2% C 0.199 H 270.8°. Best body text is #FFFFFF at 12.12:1 contrast (WCAG AA passes).

Color values

HEX	#1F1CA0
RGB	rgb(31, 28, 160)
HSL	hsl(241, 70%, 37%)
HSV	hsv(241, 83%, 63%)
CMYK	cmyk(80.6%, 82.5%, 0%, 37.3%)
CIE-LAB	lab(22.51, 46.77, -68.72)
CIE-LCH	lch(22.51, 83.12, 304.24°)
OKLab	oklab(35.24% 0.0028 -0.1989)
OKLCH	oklch(35.24% 0.199 270.8)
XYZ	xyz(7.3233, 3.6590, 33.5712)
Luminance	0.0366 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1CA0 #9DA01C

analogous

#1C5BA0 #1F1CA0 #611CA0

triadic

#1F1CA0 #A01F1C #1CA01F

tetradic

#1F1CA0 #A01C5B #9DA01C #1CA061

square

#1F1CA0 #A01C5B #9DA01C #1CA061

split-complementary

#1F1CA0 #A0611C #5BA01C

monochromatic

#0B0A38 #15136C #1F1CA0 #2925D4 #5855E1

Accessibility & contrast

On white

12.12

#1F1CA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1F1CA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1CA0

12.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1CA0	#FFFFFF	#000000	##FFFFFF
##1F1CA0	1.00	12.12	1.73	12.12
#FFFFFF	12.12	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003CA4

Deuteranopia (green-blind)

#002F9E

Tritanopia (blue-blind)

#00465F

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1f1ca0;
/* rgb */ color: rgb(31, 28, 160);
/* oklch */ color: oklch(35.2% 0.199 270.8);

Tailwind

colors: {
  custom: {
    50: '#745cbe',
    500: '#1f1ca0',
    950: '#000000',
  },
}

SCSS

$custom: #1f1ca0;
$custom-light: #745cbe;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1ca0",
  "rgb": {
    "r": 31,
    "g": 28,
    "b": 160
  },
  "hsl": {
    "h": 241.364,
    "s": 70.213,
    "l": 36.863
  },
  "oklch": {
    "l": 0.35242,
    "c": 0.19893,
    "h": 270.8
  },
  "luminance": 0.0366
}

Semantic roles & 50–950 ramp

primary

#1F1CA0

secondary

#C2C453

accent

#ED3BE9

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1F1CA0

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

Preview Lab → · Contrast checker → · Palette generator →