#1F15A0#1F15A0

#1F15A0 is a dark, highly saturated blue. Relative luminance 0.034; OKLCH L 34.5% C 0.204 H 271.2°. Best body text is #FFFFFF at 12.55:1 contrast (WCAG AA passes).

Color values

HEX	#1F15A0
RGB	rgb(31, 21, 160)
HSL	hsl(244, 77%, 35%)
HSV	hsv(244, 87%, 63%)
CMYK	cmyk(80.6%, 86.9%, 0%, 37.3%)
CIE-LAB	lab(21.45, 49.91, -70.48)
CIE-LCH	lch(21.45, 86.36, 305.30°)
OKLab	oklab(34.51% 0.0042 -0.2039)
OKLCH	oklch(34.51% 0.204 271.2)
XYZ	xyz(7.1763, 3.3649, 33.5222)
Luminance	0.0337 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F15A0 #96A015

analogous

#1550A0 #1F15A0 #6515A0

triadic

#1F15A0 #A01F15 #15A01F

tetradic

#1F15A0 #A01550 #96A015 #15A065

square

#1F15A0 #A01550 #96A015 #15A065

split-complementary

#1F15A0 #A06515 #50A015

monochromatic

#0A0734 #150E6A #1F15A0 #291CD6 #5448E7

Accessibility & contrast

On white

12.55

#1F15A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1F15A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F15A0

12.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F15A0	#FFFFFF	#000000	##FFFFFF
##1F15A0	1.00	12.55	1.67	12.55
#FFFFFF	12.55	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003AA4

Deuteranopia (green-blind)

#002C9E

Tritanopia (blue-blind)

#00445E

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1f15a0;
/* rgb */ color: rgb(31, 21, 160);
/* oklch */ color: oklch(34.5% 0.204 271.2);

Tailwind

colors: {
  custom: {
    50: '#7559be',
    500: '#1f15a0',
    950: '#000000',
  },
}

SCSS

$custom: #1f15a0;
$custom-light: #7559be;
$custom-dark: #000000;

JSON

{
  "hex": "#1f15a0",
  "rgb": {
    "r": 31,
    "g": 21,
    "b": 160
  },
  "hsl": {
    "h": 244.317,
    "s": 76.796,
    "l": 35.49
  },
  "oklch": {
    "l": 0.34511,
    "c": 0.2039,
    "h": 271.2
  },
  "luminance": 0.03366
}

Semantic roles & 50–950 ramp

primary

#1F15A0

secondary

#BFC849

accent

#F334E6

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #1F15A0

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

Preview Lab → · Contrast checker → · Palette generator →