#1F158C#1F158C

#1F158C is a dark, vivid blue. Relative luminance 0.027; OKLCH L 32.0% C 0.181 H 273.0°. Best body text is #FFFFFF at 13.60:1 contrast (WCAG AA passes).

Color values

HEX	#1F158C
RGB	rgb(31, 21, 140)
HSL	hsl(245, 74%, 32%)
HSV	hsv(245, 85%, 55%)
CMYK	cmyk(77.9%, 85%, 0%, 45.1%)
CIE-LAB	lab(18.89, 43.78, -62.38)
CIE-LCH	lch(18.89, 76.21, 305.06°)
OKLab	oklab(32.02% 0.0095 -0.1804)
OKLCH	oklch(32.02% 0.181 273)
XYZ	xyz(5.5653, 2.7205, 25.0377)
Luminance	0.0272 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F158C #828C15

analogous

#15478C #1F158C #5B158C

triadic

#1F158C #8C1F15 #158C1F

tetradic

#1F158C #8C1547 #828C15 #158C5B

square

#1F158C #8C1547 #828C15 #158C5B

split-complementary

#1F158C #8C5B15 #478C15

monochromatic

#070522 #130D57 #1F158C #2B1DC1 #483AE1

Accessibility & contrast

On white

13.60

#1F158C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1F158C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F158C

13.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F158C	#FFFFFF	#000000	##FFFFFF
##1F158C	1.00	13.60	1.54	13.60
#FFFFFF	13.60	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338F

Deuteranopia (green-blind)

#00288A

Tritanopia (blue-blind)

#003C52

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1f158c;
/* rgb */ color: rgb(31, 21, 140);
/* oklch */ color: oklch(32.0% 0.181 273.0);

Tailwind

colors: {
  custom: {
    50: '#7057af',
    500: '#1f158c',
    950: '#000000',
  },
}

SCSS

$custom: #1f158c;
$custom-light: #7057af;
$custom-dark: #000000;

JSON

{
  "hex": "#1f158c",
  "rgb": {
    "r": 31,
    "g": 21,
    "b": 140
  },
  "hsl": {
    "h": 245.042,
    "s": 73.913,
    "l": 31.569
  },
  "oklch": {
    "l": 0.32021,
    "c": 0.18068,
    "h": 273
  },
  "luminance": 0.02721
}

Semantic roles & 50–950 ramp

primary

#1F158C

secondary

#B5C03D

accent

#F137E1

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090311

muted

#7B7880

Preview Lab

Preview with #1F158C

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

Preview Lab → · Contrast checker → · Palette generator →