#1F1271#1F1271

#1F1271 is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.4% C 0.150 H 277.1°. Best body text is #FFFFFF at 15.18:1 contrast (WCAG AA passes).

Color values

HEX	#1F1271
RGB	rgb(31, 18, 113)
HSL	hsl(248, 73%, 26%)
HSV	hsv(248, 84%, 44%)
CMYK	cmyk(72.6%, 84.1%, 0%, 55.7%)
CIE-LAB	lab(15.04, 36.59, -51.56)
CIE-LCH	lch(15.04, 63.23, 305.36°)
OKLab	oklab(28.39% 0.0185 -0.149)
OKLCH	oklch(28.39% 0.15 277.1)
XYZ	xyz(3.7610, 1.9158, 15.7912)
Luminance	0.0192 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1271 #647112

analogous

#123471 #1F1271 #4E1271

triadic

#1F1271 #711F12 #12711F

tetradic

#1F1271 #711234 #647112 #12714E

square

#1F1271 #711234 #647112 #12714E

split-complementary

#1F1271 #714E12 #347112

monochromatic

#07041A #110A3C #1F1271 #2D1AA6 #3C23DB

Accessibility & contrast

On white

15.18

#1F1271 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#1F1271 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1271

15.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1271	#FFFFFF	#000000	##FFFFFF
##1F1271	1.00	15.18	1.38	15.18
#FFFFFF	15.18	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A74

Deuteranopia (green-blind)

#00226F

Tritanopia (blue-blind)

#002F42

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1f1271;
/* rgb */ color: rgb(31, 18, 113);
/* oklch */ color: oklch(28.4% 0.150 277.1);

Tailwind

colors: {
  custom: {
    50: '#69539b',
    500: '#1f1271',
    950: '#000000',
  },
}

SCSS

$custom: #1f1271;
$custom-light: #69539b;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1271",
  "rgb": {
    "r": 31,
    "g": 18,
    "b": 113
  },
  "hsl": {
    "h": 248.211,
    "s": 72.519,
    "l": 25.686
  },
  "oklch": {
    "l": 0.28389,
    "c": 0.15015,
    "h": 277.1
  },
  "luminance": 0.01916
}

Semantic roles & 50–950 ramp

primary

#1F1271

secondary

#98A837

accent

#EF39D6

background

#F6F4F9

surface

#ECE7F2

border

#C7C3CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1F1271

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

Preview Lab → · Contrast checker → · Palette generator →