#1F148D#1F148D

#1F148D is a dark, vivid blue. Relative luminance 0.027; OKLCH L 32.0% C 0.183 H 273.0°. Best body text is #FFFFFF at 13.61:1 contrast (WCAG AA passes).

Color values

HEX	#1F148D
RGB	rgb(31, 20, 141)
HSL	hsl(245, 75%, 32%)
HSV	hsv(245, 86%, 55%)
CMYK	cmyk(78%, 85.8%, 0%, 44.7%)
CIE-LAB	lab(18.86, 44.55, -63.05)
CIE-LCH	lch(18.86, 77.20, 305.24°)
OKLab	oklab(32.04% 0.0095 -0.1824)
OKLCH	oklch(32.04% 0.183 273)
XYZ	xyz(5.6213, 2.7141, 25.4218)
Luminance	0.0272 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F148D #828D14

analogous

#14458D #1F148D #5C148D

triadic

#1F148D #8D1F14 #148D1F

tetradic

#1F148D #8D1445 #828D14 #148D5C

square

#1F148D #8D1445 #828D14 #148D5C

split-complementary

#1F148D #8D5C14 #458D14

monochromatic

#070522 #130C57 #1F148D #2B1CC3 #4839E3

Accessibility & contrast

On white

13.61

#1F148D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#1F148D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F148D

13.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F148D	#FFFFFF	#000000	##FFFFFF
##1F148D	1.00	13.61	1.54	13.61
#FFFFFF	13.61	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003390

Deuteranopia (green-blind)

#00288B

Tritanopia (blue-blind)

#003C53

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1f148d;
/* rgb */ color: rgb(31, 20, 141);
/* oklch */ color: oklch(32.0% 0.183 273.0);

Tailwind

colors: {
  custom: {
    50: '#7056b0',
    500: '#1f148d',
    950: '#000000',
  },
}

SCSS

$custom: #1f148d;
$custom-light: #7056b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f148d",
  "rgb": {
    "r": 31,
    "g": 20,
    "b": 141
  },
  "hsl": {
    "h": 245.455,
    "s": 75.155,
    "l": 31.569
  },
  "oklch": {
    "l": 0.32038,
    "c": 0.1826,
    "h": 273
  },
  "luminance": 0.02715
}

Semantic roles & 50–950 ramp

primary

#1F148D

secondary

#B5C13C

accent

#F236E1

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090311

muted

#7B7880

Preview Lab

Preview with #1F148D

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

Preview Lab → · Contrast checker → · Palette generator →