#1F1371#1F1371

#1F1371 is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.5% C 0.149 H 276.9°. Best body text is #FFFFFF at 15.11:1 contrast (WCAG AA passes).

Color values

HEX	#1F1371
RGB	rgb(31, 19, 113)
HSL	hsl(248, 71%, 26%)
HSV	hsv(248, 83%, 44%)
CMYK	cmyk(72.6%, 83.2%, 0%, 55.7%)
CIE-LAB	lab(15.22, 36.08, -51.27)
CIE-LCH	lch(15.22, 62.69, 305.13°)
OKLab	oklab(28.51% 0.018 -0.1482)
OKLCH	oklch(28.51% 0.149 276.9)
XYZ	xyz(3.7776, 1.9490, 15.7967)
Luminance	0.0195 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1371 #657113

analogous

#133671 #1F1371 #4E1371

triadic

#1F1371 #711F13 #13711F

tetradic

#1F1371 #711336 #657113 #13714E

square

#1F1371 #711336 #657113 #13714E

split-complementary

#1F1371 #714E13 #367113

monochromatic

#07041A #110A3D #1F1371 #2D1CA5 #3C25DA

Accessibility & contrast

On white

15.11

#1F1371 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#1F1371 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1371

15.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1371	#FFFFFF	#000000	##FFFFFF
##1F1371	1.00	15.11	1.39	15.11
#FFFFFF	15.11	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A74

Deuteranopia (green-blind)

#00226F

Tritanopia (blue-blind)

#003042

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1f1371;
/* rgb */ color: rgb(31, 19, 113);
/* oklch */ color: oklch(28.5% 0.149 276.9);

Tailwind

colors: {
  custom: {
    50: '#69549b',
    500: '#1f1371',
    950: '#000000',
  },
}

SCSS

$custom: #1f1371;
$custom-light: #69549b;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1371",
  "rgb": {
    "r": 31,
    "g": 19,
    "b": 113
  },
  "hsl": {
    "h": 247.66,
    "s": 71.212,
    "l": 25.882
  },
  "oklch": {
    "l": 0.28512,
    "c": 0.14925,
    "h": 276.9
  },
  "luminance": 0.01949
}

Semantic roles & 50–950 ramp

primary

#1F1371

secondary

#99A838

accent

#EE3AD7

background

#F6F4F9

surface

#ECE7F2

border

#C7C3CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1F1371

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

Preview Lab → · Contrast checker → · Palette generator →