#1F3CAE#1F3CAE

#1F3CAE is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.6% C 0.184 H 266.6°. Best body text is #FFFFFF at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#1F3CAE
RGB	rgb(31, 60, 174)
HSL	hsl(228, 70%, 40%)
HSV	hsv(228, 82%, 68%)
CMYK	cmyk(82.2%, 65.5%, 0%, 31.8%)
CIE-LAB	lab(30.83, 32.77, -63.44)
CIE-LCH	lch(30.83, 71.40, 297.32°)
OKLab	oklab(41.64% -0.0109 -0.1837)
OKLCH	oklch(41.64% 0.184 266.6)
XYZ	xyz(9.8182, 6.5778, 40.7884)
Luminance	0.0658 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3CAE #AE911F

analogous

#1F84AE #1F3CAE #491FAE

triadic

#1F3CAE #AE1F3C #3CAE1F

tetradic

#1F3CAE #AE1F84 #AE911F #1FAE49

square

#1F3CAE #AE1F84 #AE911F #1FAE49

split-complementary

#1F3CAE #AE491F #84AE1F

monochromatic

#0C1846 #162A7A #1F3CAE #3053DA #647EE3

Accessibility & contrast

On white

9.07

#1F3CAE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#1F3CAE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3CAE

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3CAE	#FFFFFF	#000000	##FFFFFF
##1F3CAE	1.00	9.07	2.32	9.07
#FFFFFF	9.07	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB2

Deuteranopia (green-blind)

#0042AC

Tritanopia (blue-blind)

#005B6F

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1f3cae;
/* rgb */ color: rgb(31, 60, 174);
/* oklch */ color: oklch(41.6% 0.184 266.6);

Tailwind

colors: {
  custom: {
    50: '#7571c7',
    500: '#1f3cae',
    950: '#000000',
  },
}

SCSS

$custom: #1f3cae;
$custom-light: #7571c7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3cae",
  "rgb": {
    "r": 31,
    "g": 60,
    "b": 174
  },
  "hsl": {
    "h": 227.832,
    "s": 69.756,
    "l": 40.196
  },
  "oklch": {
    "l": 0.41641,
    "c": 0.18405,
    "h": 266.6
  },
  "luminance": 0.06579
}

Semantic roles & 50–950 ramp

primary

#1F3CAE

secondary

#C8B360

accent

#C93BED

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #1F3CAE

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

Preview Lab → · Contrast checker → · Palette generator →