#1F1F97#1F1F97

#1F1F97 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.5% C 0.186 H 271.2°. Best body text is #FFFFFF at 12.34:1 contrast (WCAG AA passes).

Color values

HEX	#1F1F97
RGB	rgb(31, 31, 151)
HSL	hsl(240, 66%, 36%)
HSV	hsv(240, 79%, 59%)
CMYK	cmyk(79.5%, 79.5%, 0%, 40.8%)
CIE-LAB	lab(21.96, 42.29, -64.11)
CIE-LCH	lch(21.96, 76.80, 303.41°)
OKLab	oklab(34.55% 0.0039 -0.1856)
OKLCH	oklch(34.55% 0.186 271.2)
XYZ	xyz(6.6391, 3.5049, 29.5988)
Luminance	0.0351 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1F97 #97971F

analogous

#1F5B97 #1F1F97 #5B1F97

triadic

#1F1F97 #971F1F #1F971F

tetradic

#1F1F97 #971F5B #97971F #1F975B

square

#1F1F97 #971F5B #97971F #1F975B

split-complementary

#1F1F97 #975B1F #5B971F

monochromatic

#0A0A31 #151564 #1F1F97 #2929CA #5454DC

Accessibility & contrast

On white

12.34

#1F1F97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1F1F97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1F97

12.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1F97	#FFFFFF	#000000	##FFFFFF
##1F1F97	1.00	12.34	1.70	12.34
#FFFFFF	12.34	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B9A

Deuteranopia (green-blind)

#002E95

Tritanopia (blue-blind)

#00445B

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1f1f97;
/* rgb */ color: rgb(31, 31, 151);
/* oklch */ color: oklch(34.5% 0.186 271.2);

Tailwind

colors: {
  custom: {
    50: '#725db7',
    500: '#1f1f97',
    950: '#000000',
  },
}

SCSS

$custom: #1f1f97;
$custom-light: #725db7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1f97",
  "rgb": {
    "r": 31,
    "g": 31,
    "b": 151
  },
  "hsl": {
    "h": 240,
    "s": 65.934,
    "l": 35.686
  },
  "oklch": {
    "l": 0.34547,
    "c": 0.18565,
    "h": 271.2
  },
  "luminance": 0.03506
}

Semantic roles & 50–950 ramp

primary

#1F1F97

secondary

#BFBF52

accent

#E93FE9

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #1F1F97

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

Preview Lab → · Contrast checker → · Palette generator →