#1F1CA9#1F1CA9

#1F1CA9 is a dark, highly saturated blue. Relative luminance 0.040; OKLCH L 36.3% C 0.209 H 270.2°. Best body text is #FFFFFF at 11.68:1 contrast (WCAG AA passes).

Color values

HEX	#1F1CA9
RGB	rgb(31, 28, 169)
HSL	hsl(241, 72%, 39%)
HSV	hsv(241, 83%, 66%)
CMYK	cmyk(81.7%, 83.4%, 0%, 33.7%)
CIE-LAB	lab(23.62, 49.60, -72.33)
CIE-LCH	lch(23.62, 87.70, 304.44°)
OKLab	oklab(36.33% 0.0007 -0.2094)
OKLCH	oklch(36.33% 0.209 270.2)
XYZ	xyz(8.1393, 3.9854, 37.8687)
Luminance	0.0399 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1CA9 #A6A91C

analogous

#1C5FA9 #1F1CA9 #651CA9

triadic

#1F1CA9 #A91F1C #1CA91F

tetradic

#1F1CA9 #A91C5F #A6A91C #1CA965

square

#1F1CA9 #A91C5F #A6A91C #1CA965

split-complementary

#1F1CA9 #A9651C #5FA91C

monochromatic

#0C0B40 #151374 #1F1CA9 #2B27DB #5E5BE4

Accessibility & contrast

On white

11.68

#1F1CA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1F1CA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1CA9

11.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1CA9	#FFFFFF	#000000	##FFFFFF
##1F1CA9	1.00	11.68	1.80	11.68
#FFFFFF	11.68	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003FAD

Deuteranopia (green-blind)

#0031A7

Tritanopia (blue-blind)

#004A64

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1f1ca9;
/* rgb */ color: rgb(31, 28, 169);
/* oklch */ color: oklch(36.3% 0.209 270.2);

Tailwind

colors: {
  custom: {
    50: '#775dc4',
    500: '#1f1ca9',
    950: '#000000',
  },
}

SCSS

$custom: #1f1ca9;
$custom-light: #775dc4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1ca9",
  "rgb": {
    "r": 31,
    "g": 28,
    "b": 169
  },
  "hsl": {
    "h": 241.277,
    "s": 71.574,
    "l": 38.627
  },
  "oklch": {
    "l": 0.36332,
    "c": 0.20937,
    "h": 270.2
  },
  "luminance": 0.03986
}

Semantic roles & 50–950 ramp

primary

#1F1CA9

secondary

#C5C859

accent

#EE39EA

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0413

muted

#7C7982

Preview Lab

Preview with #1F1CA9

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

Preview Lab → · Contrast checker → · Palette generator →