#1F158D#1F158D

#1F158D is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.1% C 0.182 H 272.9°. Best body text is #FFFFFF at 13.55:1 contrast (WCAG AA passes).

Color values

HEX	#1F158D
RGB	rgb(31, 21, 141)
HSL	hsl(245, 74%, 32%)
HSV	hsv(245, 85%, 55%)
CMYK	cmyk(78%, 85.1%, 0%, 44.7%)
CIE-LAB	lab(19.01, 44.09, -62.79)
CIE-LCH	lch(19.01, 76.73, 305.08°)
OKLab	oklab(32.14% 0.0093 -0.1816)
OKLCH	oklch(32.14% 0.182 272.9)
XYZ	xyz(5.6394, 2.7501, 25.4278)
Luminance	0.0275 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F158D #838D15

analogous

#15478D #1F158D #5B158D

triadic

#1F158D #8D1F15 #158D1F

tetradic

#1F158D #8D1547 #838D15 #158D5B

square

#1F158D #8D1547 #838D15 #158D5B

split-complementary

#1F158D #8D5B15 #478D15

monochromatic

#080522 #130D58 #1F158D #2B1DC2 #493BE2

Accessibility & contrast

On white

13.55

#1F158D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#1F158D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F158D

13.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F158D	#FFFFFF	#000000	##FFFFFF
##1F158D	1.00	13.55	1.55	13.55
#FFFFFF	13.55	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003490

Deuteranopia (green-blind)

#00288B

Tritanopia (blue-blind)

#003C53

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1f158d;
/* rgb */ color: rgb(31, 21, 141);
/* oklch */ color: oklch(32.1% 0.182 272.9);

Tailwind

colors: {
  custom: {
    50: '#7057b0',
    500: '#1f158d',
    950: '#000000',
  },
}

SCSS

$custom: #1f158d;
$custom-light: #7057b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f158d",
  "rgb": {
    "r": 31,
    "g": 21,
    "b": 141
  },
  "hsl": {
    "h": 245,
    "s": 74.074,
    "l": 31.765
  },
  "oklch": {
    "l": 0.32144,
    "c": 0.18187,
    "h": 272.9
  },
  "luminance": 0.02751
}

Semantic roles & 50–950 ramp

primary

#1F158D

secondary

#B6C13D

accent

#F137E1

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1F158D

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

Preview Lab → · Contrast checker → · Palette generator →