#1F247E#1F247E

#1F247E is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.5% C 0.148 H 272.3°. Best body text is #FFFFFF at 13.03:1 contrast (WCAG AA passes).

Color values

HEX	#1F247E
RGB	rgb(31, 36, 126)
HSL	hsl(237, 61%, 31%)
HSV	hsv(237, 75%, 49%)
CMYK	cmyk(75.4%, 71.4%, 0%, 50.6%)
CIE-LAB	lab(20.28, 30.48, -51.26)
CIE-LCH	lch(20.28, 59.64, 300.74°)
OKLab	oklab(32.53% 0.0059 -0.1483)
OKLCH	oklch(32.53% 0.148 272.3)
XYZ	xyz(4.9606, 3.0589, 20.0636)
Luminance	0.0306 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F247E #7E791F

analogous

#1F537E #1F247E #491F7E

triadic

#1F247E #7E1F24 #247E1F

tetradic

#1F247E #7E1F53 #7E791F #1F7E49

square

#1F247E #7E1F53 #7E791F #1F7E49

split-complementary

#1F247E #7E491F #537E1F

monochromatic

#07081C #13164D #1F247E #2B32AF #464DD1

Accessibility & contrast

On white

13.03

#1F247E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#1F247E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F247E

13.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F247E	#FFFFFF	#000000	##FFFFFF
##1F247E	1.00	13.03	1.61	13.03
#FFFFFF	13.03	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003581

Deuteranopia (green-blind)

#002C7C

Tritanopia (blue-blind)

#003D4E

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1f247e;
/* rgb */ color: rgb(31, 36, 126);
/* oklch */ color: oklch(32.5% 0.148 272.3);

Tailwind

colors: {
  custom: {
    50: '#6b5fa4',
    500: '#1f247e',
    950: '#000000',
  },
}

SCSS

$custom: #1f247e;
$custom-light: #6b5fa4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f247e",
  "rgb": {
    "r": 31,
    "g": 36,
    "b": 126
  },
  "hsl": {
    "h": 236.842,
    "s": 60.51,
    "l": 30.784
  },
  "oklch": {
    "l": 0.32533,
    "c": 0.14838,
    "h": 272.3
  },
  "luminance": 0.03059
}

Semantic roles & 50–950 ramp

primary

#1F247E

secondary

#B1AC48

accent

#DB44E4

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08040F

muted

#7A797F

Preview Lab

Preview with #1F247E

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

Preview Lab → · Contrast checker → · Palette generator →