#1F158F#1F158F

#1F158F is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.4% C 0.184 H 272.7°. Best body text is #FFFFFF at 13.44:1 contrast (WCAG AA passes).

Color values

HEX	#1F158F
RGB	rgb(31, 21, 143)
HSL	hsl(245, 74%, 32%)
HSV	hsv(245, 85%, 56%)
CMYK	cmyk(78.3%, 85.3%, 0%, 43.9%)
CIE-LAB	lab(19.27, 44.72, -63.62)
CIE-LCH	lch(19.27, 77.76, 305.10°)
OKLab	oklab(32.39% 0.0087 -0.184)
OKLCH	oklch(32.39% 0.184 272.7)
XYZ	xyz(5.7895, 2.8102, 26.2186)
Luminance	0.0281 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F158F #858F15

analogous

#15488F #1F158F #5C158F

triadic

#1F158F #8F1F15 #158F1F

tetradic

#1F158F #8F1548 #858F15 #158F5C

square

#1F158F #8F1548 #858F15 #158F5C

split-complementary

#1F158F #8F5C15 #488F15

monochromatic

#080524 #130D5A #1F158F #2B1DC4 #4A3CE2

Accessibility & contrast

On white

13.44

#1F158F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1F158F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F158F

13.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F158F	#FFFFFF	#000000	##FFFFFF
##1F158F	1.00	13.44	1.56	13.44
#FFFFFF	13.44	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003492

Deuteranopia (green-blind)

#00298D

Tritanopia (blue-blind)

#003D54

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1f158f;
/* rgb */ color: rgb(31, 21, 143);
/* oklch */ color: oklch(32.4% 0.184 272.7);

Tailwind

colors: {
  custom: {
    50: '#7057b1',
    500: '#1f158f',
    950: '#000000',
  },
}

SCSS

$custom: #1f158f;
$custom-light: #7057b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f158f",
  "rgb": {
    "r": 31,
    "g": 21,
    "b": 143
  },
  "hsl": {
    "h": 244.918,
    "s": 74.39,
    "l": 32.157
  },
  "oklch": {
    "l": 0.32391,
    "c": 0.18423,
    "h": 272.7
  },
  "luminance": 0.02811
}

Semantic roles & 50–950 ramp

primary

#1F158F

secondary

#B7C23E

accent

#F137E2

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1F158F

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

Preview Lab → · Contrast checker → · Palette generator →