#1F248F#1F248F

#1F248F is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.4% C 0.171 H 271.1°. Best body text is #FFFFFF at 12.30:1 contrast (WCAG AA passes).

Color values

HEX	#1F248F
RGB	rgb(31, 36, 143)
HSL	hsl(237, 64%, 34%)
HSV	hsv(237, 78%, 56%)
CMYK	cmyk(78.3%, 74.8%, 0%, 43.9%)
CIE-LAB	lab(22.07, 36.65, -58.98)
CIE-LCH	lch(22.07, 69.44, 301.86°)
OKLab	oklab(34.36% 0.0034 -0.1708)
OKLCH	oklch(34.36% 0.171 271.1)
XYZ	xyz(6.1522, 3.5356, 26.3395)
Luminance	0.0354 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F248F #8F8A1F

analogous

#1F5C8F #1F248F #521F8F

triadic

#1F248F #8F1F24 #248F1F

tetradic

#1F248F #8F1F5C #8F8A1F #1F8F52

square

#1F248F #8F1F5C #8F8A1F #1F8F52

split-complementary

#1F248F #8F521F #5C8F1F

monochromatic

#090B2A #14175D #1F248F #2A31C1 #4F56D9

Accessibility & contrast

On white

12.30

#1F248F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1F248F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F248F

12.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F248F	#FFFFFF	#000000	##FFFFFF
##1F248F	1.00	12.30	1.71	12.30
#FFFFFF	12.30	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A92

Deuteranopia (green-blind)

#002F8D

Tritanopia (blue-blind)

#004357

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1f248f;
/* rgb */ color: rgb(31, 36, 143);
/* oklch */ color: oklch(34.4% 0.171 271.1);

Tailwind

colors: {
  custom: {
    50: '#6f60b1',
    500: '#1f248f',
    950: '#000000',
  },
}

SCSS

$custom: #1f248f;
$custom-light: #6f60b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f248f",
  "rgb": {
    "r": 31,
    "g": 36,
    "b": 143
  },
  "hsl": {
    "h": 237.321,
    "s": 64.368,
    "l": 34.118
  },
  "oklch": {
    "l": 0.34359,
    "c": 0.17078,
    "h": 271.1
  },
  "luminance": 0.03536
}

Semantic roles & 50–950 ramp

primary

#1F248F

secondary

#BCB74E

accent

#E040E7

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #1F248F

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

Preview Lab → · Contrast checker → · Palette generator →