#1F0F72#1F0F72

#1F0F72 is a dark, vivid blue. Relative luminance 0.018; OKLCH L 28.2% C 0.154 H 277.3°. Best body text is #FFFFFF at 15.33:1 contrast (WCAG AA passes).

Color values

HEX	#1F0F72
RGB	rgb(31, 15, 114)
HSL	hsl(250, 77%, 25%)
HSV	hsv(250, 87%, 45%)
CMYK	cmyk(72.8%, 86.8%, 0%, 55.3%)
CIE-LAB	lab(14.67, 38.37, -52.83)
CIE-LCH	lch(14.67, 65.30, 305.99°)
OKLab	oklab(28.17% 0.0195 -0.1526)
OKLCH	oklch(28.17% 0.154 277.3)
XYZ	xyz(3.7722, 1.8475, 16.0741)
Luminance	0.0185 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F0F72 #62720F

analogous

#0F3072 #1F0F72 #500F72

triadic

#1F0F72 #721F0F #0F721F

tetradic

#1F0F72 #720F30 #62720F #0F7250

square

#1F0F72 #720F30 #62720F #0F7250

split-complementary

#1F0F72 #72500F #30720F

monochromatic

#07041B #10083C #1F0F72 #2E16A8 #3C1DDE

Accessibility & contrast

On white

15.33

#1F0F72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#1F0F72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F0F72

15.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F0F72	#FFFFFF	#000000	##FFFFFF
##1F0F72	1.00	15.33	1.37	15.33
#FFFFFF	15.33	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002975

Deuteranopia (green-blind)

#002170

Tritanopia (blue-blind)

#002F42

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #1f0f72;
/* rgb */ color: rgb(31, 15, 114);
/* oklch */ color: oklch(28.2% 0.154 277.3);

Tailwind

colors: {
  custom: {
    50: '#6a529c',
    500: '#1f0f72',
    950: '#000000',
  },
}

SCSS

$custom: #1f0f72;
$custom-light: #6a529c;
$custom-dark: #000000;

JSON

{
  "hex": "#1f0f72",
  "rgb": {
    "r": 31,
    "g": 15,
    "b": 114
  },
  "hsl": {
    "h": 249.697,
    "s": 76.744,
    "l": 25.294
  },
  "oklch": {
    "l": 0.28167,
    "c": 0.15387,
    "h": 277.3
  },
  "luminance": 0.01848
}

Semantic roles & 50–950 ramp

primary

#1F0F72

secondary

#97AA33

accent

#F335D4

background

#F6F4F9

surface

#ECE7F2

border

#C7C3CC

text

#07020E

muted

#7A787E

Preview Lab

Preview with #1F0F72

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

Preview Lab → · Contrast checker → · Palette generator →