#1F1CA7#1F1CA7

#1F1CA7 is a dark, highly saturated blue. Relative luminance 0.039; OKLCH L 36.1% C 0.207 H 270.3°. Best body text is #FFFFFF at 11.78:1 contrast (WCAG AA passes).

Color values

HEX	#1F1CA7
RGB	rgb(31, 28, 167)
HSL	hsl(241, 71%, 38%)
HSV	hsv(241, 83%, 65%)
CMYK	cmyk(81.4%, 83.2%, 0%, 34.5%)
CIE-LAB	lab(23.37, 48.97, -71.54)
CIE-LCH	lch(23.37, 86.69, 304.40°)
OKLab	oklab(36.09% 0.0012 -0.2071)
OKLCH	oklch(36.09% 0.207 270.3)
XYZ	xyz(7.9530, 3.9109, 36.8874)
Luminance	0.0391 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1CA7 #A4A71C

analogous

#1C5EA7 #1F1CA7 #641CA7

triadic

#1F1CA7 #A71F1C #1CA71F

tetradic

#1F1CA7 #A71C5E #A4A71C #1CA764

square

#1F1CA7 #A71C5E #A4A71C #1CA764

split-complementary

#1F1CA7 #A7641C #5EA71C

monochromatic

#0C0A3E #151373 #1F1CA7 #2A26DB #5D5AE3

Accessibility & contrast

On white

11.78

#1F1CA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1F1CA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1CA7

11.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1CA7	#FFFFFF	#000000	##FFFFFF
##1F1CA7	1.00	11.78	1.78	11.78
#FFFFFF	11.78	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003FAB

Deuteranopia (green-blind)

#0030A5

Tritanopia (blue-blind)

#004963

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1f1ca7;
/* rgb */ color: rgb(31, 28, 167);
/* oklch */ color: oklch(36.1% 0.207 270.3);

Tailwind

colors: {
  custom: {
    50: '#765dc3',
    500: '#1f1ca7',
    950: '#000000',
  },
}

SCSS

$custom: #1f1ca7;
$custom-light: #765dc3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1ca7",
  "rgb": {
    "r": 31,
    "g": 28,
    "b": 167
  },
  "hsl": {
    "h": 241.295,
    "s": 71.282,
    "l": 38.235
  },
  "oklch": {
    "l": 0.36089,
    "c": 0.20707,
    "h": 270.3
  },
  "luminance": 0.03912
}

Semantic roles & 50–950 ramp

primary

#1F1CA7

secondary

#C5C758

accent

#EE3AEA

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0A0413

muted

#7C7982

Preview Lab

Preview with #1F1CA7

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

Preview Lab → · Contrast checker → · Palette generator →