#1F1DA7#1F1DA7

#1F1DA7 is a dark, highly saturated blue. Relative luminance 0.040; OKLCH L 36.2% C 0.206 H 270.3°. Best body text is #FFFFFF at 11.72:1 contrast (WCAG AA passes).

Color values

HEX	#1F1DA7
RGB	rgb(31, 29, 167)
HSL	hsl(241, 70%, 38%)
HSV	hsv(241, 83%, 65%)
CMYK	cmyk(81.4%, 82.6%, 0%, 34.5%)
CIE-LAB	lab(23.54, 48.50, -71.27)
CIE-LCH	lch(23.54, 86.21, 304.24°)
OKLab	oklab(36.2% 0.001 -0.2063)
OKLCH	oklch(36.2% 0.206 270.3)
XYZ	xyz(7.9771, 3.9591, 36.8955)
Luminance	0.0396 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1DA7 #A5A71D

analogous

#1D60A7 #1F1DA7 #641DA7

triadic

#1F1DA7 #A71F1D #1DA71F

tetradic

#1F1DA7 #A71D60 #A5A71D #1DA764

square

#1F1DA7 #A71D60 #A5A71D #1DA764

split-complementary

#1F1DA7 #A7641D #60A71D

monochromatic

#0C0B3F #151473 #1F1DA7 #2A28DA #5E5CE3

Accessibility & contrast

On white

11.72

#1F1DA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#1F1DA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1DA7

11.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1DA7	#FFFFFF	#000000	##FFFFFF
##1F1DA7	1.00	11.72	1.79	11.72
#FFFFFF	11.72	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003FAB

Deuteranopia (green-blind)

#0031A5

Tritanopia (blue-blind)

#004963

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1f1da7;
/* rgb */ color: rgb(31, 29, 167);
/* oklch */ color: oklch(36.2% 0.206 270.3);

Tailwind

colors: {
  custom: {
    50: '#765dc3',
    500: '#1f1da7',
    950: '#000000',
  },
}

SCSS

$custom: #1f1da7;
$custom-light: #765dc3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1da7",
  "rgb": {
    "r": 31,
    "g": 29,
    "b": 167
  },
  "hsl": {
    "h": 240.87,
    "s": 70.408,
    "l": 38.431
  },
  "oklch": {
    "l": 0.36201,
    "c": 0.20631,
    "h": 270.3
  },
  "luminance": 0.0396
}

Semantic roles & 50–950 ramp

primary

#1F1DA7

secondary

#C5C759

accent

#ED3BEB

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0A0413

muted

#7C7982

Preview Lab

Preview with #1F1DA7

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

Preview Lab → · Contrast checker → · Palette generator →