#1F1B7D#1F1B7D

#1F1B7D is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.0% C 0.157 H 274.0°. Best body text is #FFFFFF at 13.90:1 contrast (WCAG AA passes).

Color values

HEX	#1F1B7D
RGB	rgb(31, 27, 125)
HSL	hsl(242, 64%, 30%)
HSV	hsv(242, 78%, 49%)
CMYK	cmyk(75.2%, 78.4%, 0%, 51%)
CIE-LAB	lab(18.17, 35.69, -54.11)
CIE-LCH	lch(18.17, 64.82, 303.41°)
OKLab	oklab(30.99% 0.011 -0.1565)
OKLCH	oklch(30.99% 0.157 274)
XYZ	xyz(4.6574, 2.5554, 19.6458)
Luminance	0.0256 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1B7D #797D1B

analogous

#1B487D #1F1B7D #501B7D

triadic

#1F1B7D #7D1F1B #1B7D1F

tetradic

#1F1B7D #7D1B48 #797D1B #1B7D50

square

#1F1B7D #7D1B48 #797D1B #1B7D50

split-complementary

#1F1B7D #7D501B #487D1B

monochromatic

#060519 #13104B #1F1B7D #2B26AF #433DD5

Accessibility & contrast

On white

13.90

#1F1B7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#1F1B7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1B7D

13.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1B7D	#FFFFFF	#000000	##FFFFFF
##1F1B7D	1.00	13.90	1.51	13.90
#FFFFFF	13.90	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003180

Deuteranopia (green-blind)

#00287B

Tritanopia (blue-blind)

#00384B

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #1f1b7d;
/* rgb */ color: rgb(31, 27, 125);
/* oklch */ color: oklch(31.0% 0.157 274.0);

Tailwind

colors: {
  custom: {
    50: '#6b59a4',
    500: '#1f1b7d',
    950: '#000000',
  },
}

SCSS

$custom: #1f1b7d;
$custom-light: #6b59a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1b7d",
  "rgb": {
    "r": 31,
    "g": 27,
    "b": 125
  },
  "hsl": {
    "h": 242.449,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.30993,
    "c": 0.1569,
    "h": 274
  },
  "luminance": 0.02556
}

Semantic roles & 50–950 ramp

primary

#1F1B7D

secondary

#ACB143

accent

#E740E1

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1F1B7D

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

Preview Lab → · Contrast checker → · Palette generator →