#1F146B#1F146B

#1F146B is a dark, vivid blue. Relative luminance 0.019; OKLCH L 27.9% C 0.141 H 277.9°. Best body text is #FFFFFF at 15.32:1 contrast (WCAG AA passes).

Color values

HEX	#1F146B
RGB	rgb(31, 20, 107)
HSL	hsl(248, 69%, 25%)
HSV	hsv(248, 81%, 42%)
CMYK	cmyk(71%, 81.3%, 0%, 58%)
CIE-LAB	lab(14.70, 33.53, -48.22)
CIE-LCH	lch(14.70, 58.73, 304.82°)
OKLab	oklab(27.94% 0.0192 -0.1393)
OKLCH	oklch(27.94% 0.141 277.9)
XYZ	xyz(3.4682, 1.8529, 14.0819)
Luminance	0.0185 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F146B #606B14

analogous

#14356B #1F146B #4A146B

triadic

#1F146B #6B1F14 #146B1F

tetradic

#1F146B #6B1435 #606B14 #146B4A

square

#1F146B #6B1435 #606B14 #146B4A

split-complementary

#1F146B #6B4A14 #356B14

monochromatic

#07051A #100A37 #1F146B #2E1E9F #3D27D2

Accessibility & contrast

On white

15.32

#1F146B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#1F146B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F146B

15.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F146B	#FFFFFF	#000000	##FFFFFF
##1F146B	1.00	15.32	1.37	15.32
#FFFFFF	15.32	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00286D

Deuteranopia (green-blind)

#002169

Tritanopia (blue-blind)

#002E3F

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #1f146b;
/* rgb */ color: rgb(31, 20, 107);
/* oklch */ color: oklch(27.9% 0.141 277.9);

Tailwind

colors: {
  custom: {
    50: '#675496',
    500: '#1f146b',
    950: '#000000',
  },
}

SCSS

$custom: #1f146b;
$custom-light: #675496;
$custom-dark: #000000;

JSON

{
  "hex": "#1f146b",
  "rgb": {
    "r": 31,
    "g": 20,
    "b": 107
  },
  "hsl": {
    "h": 247.586,
    "s": 68.504,
    "l": 24.902
  },
  "oklch": {
    "l": 0.27939,
    "c": 0.14062,
    "h": 277.9
  },
  "luminance": 0.01853
}

Semantic roles & 50–950 ramp

primary

#1F146B

secondary

#95A239

accent

#EB3CD5

background

#F6F4F9

surface

#EBE7F2

border

#C6C3CC

text

#07030D

muted

#7A787E

Preview Lab

Preview with #1F146B

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

Preview Lab → · Contrast checker → · Palette generator →