#1F248E#1F248E

#1F248E is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.2% C 0.170 H 271.2°. Best body text is #FFFFFF at 12.34:1 contrast (WCAG AA passes).

Color values

HEX	#1F248E
RGB	rgb(31, 36, 142)
HSL	hsl(237, 64%, 34%)
HSV	hsv(237, 78%, 56%)
CMYK	cmyk(78.2%, 74.6%, 0%, 44.3%)
CIE-LAB	lab(21.96, 36.29, -58.53)
CIE-LCH	lch(21.96, 68.87, 301.80°)
OKLab	oklab(34.25% 0.0036 -0.1695)
OKLCH	oklch(34.25% 0.17 271.2)
XYZ	xyz(6.0768, 3.5054, 25.9423)
Luminance	0.0351 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F248E #8E891F

analogous

#1F5C8E #1F248E #521F8E

triadic

#1F248E #8E1F24 #248E1F

tetradic

#1F248E #8E1F5C #8E891F #1F8E52

square

#1F248E #8E1F5C #8E891F #1F8E52

split-complementary

#1F248E #8E521F #5C8E1F

monochromatic

#090B2A #14175C #1F248E #2A31C0 #4F55D9

Accessibility & contrast

On white

12.34

#1F248E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1F248E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F248E

12.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F248E	#FFFFFF	#000000	##FFFFFF
##1F248E	1.00	12.34	1.70	12.34
#FFFFFF	12.34	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A91

Deuteranopia (green-blind)

#002F8C

Tritanopia (blue-blind)

#004257

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1f248e;
/* rgb */ color: rgb(31, 36, 142);
/* oklch */ color: oklch(34.2% 0.170 271.2);

Tailwind

colors: {
  custom: {
    50: '#6f60b0',
    500: '#1f248e',
    950: '#000000',
  },
}

SCSS

$custom: #1f248e;
$custom-light: #6f60b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f248e",
  "rgb": {
    "r": 31,
    "g": 36,
    "b": 142
  },
  "hsl": {
    "h": 237.297,
    "s": 64.162,
    "l": 33.922
  },
  "oklch": {
    "l": 0.34249,
    "c": 0.1695,
    "h": 271.2
  },
  "luminance": 0.03506
}

Semantic roles & 50–950 ramp

primary

#1F248E

secondary

#BBB74D

accent

#E041E7

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #1F248E

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

Preview Lab → · Contrast checker → · Palette generator →