#1F1173#1F1173

#1F1173 is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.5% C 0.153 H 276.9°. Best body text is #FFFFFF at 15.15:1 contrast (WCAG AA passes).

Color values

HEX	#1F1173
RGB	rgb(31, 17, 115)
HSL	hsl(249, 74%, 26%)
HSV	hsv(249, 85%, 45%)
CMYK	cmyk(73%, 85.2%, 0%, 54.9%)
CIE-LAB	lab(15.11, 37.74, -52.74)
CIE-LCH	lch(15.11, 64.85, 305.59°)
OKLab	oklab(28.51% 0.0183 -0.1524)
OKLCH	oklch(28.51% 0.153 276.9)
XYZ	xyz(3.8590, 1.9297, 16.3854)
Luminance	0.0193 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1173 #657311

analogous

#113473 #1F1173 #501173

triadic

#1F1173 #731F11 #11731F

tetradic

#1F1173 #731134 #657311 #117350

square

#1F1173 #731134 #657311 #117350

split-complementary

#1F1173 #735011 #347311

monochromatic

#07041B #11093E #1F1173 #2D19A8 #3C21DE

Accessibility & contrast

On white

15.15

#1F1173 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#1F1173 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1173

15.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1173	#FFFFFF	#000000	##FFFFFF
##1F1173	1.00	15.15	1.39	15.15
#FFFFFF	15.15	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A76

Deuteranopia (green-blind)

#002271

Tritanopia (blue-blind)

#003043

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1f1173;
/* rgb */ color: rgb(31, 17, 115);
/* oklch */ color: oklch(28.5% 0.153 276.9);

Tailwind

colors: {
  custom: {
    50: '#6a539c',
    500: '#1f1173',
    950: '#000000',
  },
}

SCSS

$custom: #1f1173;
$custom-light: #6a539c;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1173",
  "rgb": {
    "r": 31,
    "g": 17,
    "b": 115
  },
  "hsl": {
    "h": 248.571,
    "s": 74.242,
    "l": 25.882
  },
  "oklch": {
    "l": 0.28512,
    "c": 0.15349,
    "h": 276.9
  },
  "luminance": 0.0193
}

Semantic roles & 50–950 ramp

primary

#1F1173

secondary

#99AA36

accent

#F137D6

background

#F6F4F9

surface

#ECE7F2

border

#C7C3CC

text

#07020E

muted

#7A787E

Preview Lab

Preview with #1F1173

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

Preview Lab → · Contrast checker → · Palette generator →