#1F247D#1F247D

#1F247D is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.4% C 0.147 H 272.3°. Best body text is #FFFFFF at 13.07:1 contrast (WCAG AA passes).

Color values

HEX	#1F247D
RGB	rgb(31, 36, 125)
HSL	hsl(237, 60%, 31%)
HSV	hsv(237, 75%, 49%)
CMYK	cmyk(75.2%, 71.2%, 0%, 51%)
CIE-LAB	lab(20.18, 30.11, -50.79)
CIE-LCH	lch(20.18, 59.05, 300.66°)
OKLab	oklab(32.43% 0.006 -0.1469)
OKLCH	oklch(32.43% 0.147 272.3)
XYZ	xyz(4.8964, 3.0332, 19.7255)
Luminance	0.0303 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F247D #7D781F

analogous

#1F537D #1F247D #491F7D

triadic

#1F247D #7D1F24 #247D1F

tetradic

#1F247D #7D1F53 #7D781F #1F7D49

square

#1F247D #7D1F53 #7D781F #1F7D49

split-complementary

#1F247D #7D491F #537D1F

monochromatic

#07081B #13164C #1F247D #2B32AE #454DD1

Accessibility & contrast

On white

13.07

#1F247D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#1F247D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F247D

13.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F247D	#FFFFFF	#000000	##FFFFFF
##1F247D	1.00	13.07	1.61	13.07
#FFFFFF	13.07	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003580

Deuteranopia (green-blind)

#002C7B

Tritanopia (blue-blind)

#003C4D

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1f247d;
/* rgb */ color: rgb(31, 36, 125);
/* oklch */ color: oklch(32.4% 0.147 272.3);

Tailwind

colors: {
  custom: {
    50: '#6a5fa4',
    500: '#1f247d',
    950: '#000000',
  },
}

SCSS

$custom: #1f247d;
$custom-light: #6a5fa4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f247d",
  "rgb": {
    "r": 31,
    "g": 36,
    "b": 125
  },
  "hsl": {
    "h": 236.809,
    "s": 60.256,
    "l": 30.588
  },
  "oklch": {
    "l": 0.32429,
    "c": 0.14702,
    "h": 272.3
  },
  "luminance": 0.03034
}

Semantic roles & 50–950 ramp

primary

#1F247D

secondary

#B0AB48

accent

#DB44E3

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1F247D

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

Preview Lab → · Contrast checker → · Palette generator →