#1F448E#1F448E

#1F448E is a dark, vivid blue. Relative luminance 0.064; OKLCH L 40.5% C 0.130 H 262.3°. Best body text is #FFFFFF at 9.23:1 contrast (WCAG AA passes).

Color values

HEX	#1F448E
RGB	rgb(31, 68, 142)
HSL	hsl(220, 64%, 34%)
HSV	hsv(220, 78%, 56%)
CMYK	cmyk(78.2%, 52.1%, 0%, 44.3%)
CIE-LAB	lab(30.35, 14.81, -44.84)
CIE-LCH	lch(30.35, 47.22, 288.28°)
OKLab	oklab(40.46% -0.0175 -0.129)
OKLCH	oklch(40.46% 0.13 262.3)
XYZ	xyz(7.5129, 6.3777, 26.4210)
Luminance	0.0638 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F448E #8E691F

analogous

#1F7C8E #1F448E #321F8E

triadic

#1F448E #8E1F44 #448E1F

tetradic

#1F448E #8E1F7C #8E691F #1F8E32

square

#1F448E #8E1F7C #8E691F #1F8E32

split-complementary

#1F448E #8E321F #7C8E1F

monochromatic

#09142A #142C5C #1F448E #2A5CC0 #4F7DD9

Accessibility & contrast

On white

9.23

#1F448E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#1F448E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F448E

9.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F448E	#FFFFFF	#000000	##FFFFFF
##1F448E	1.00	9.23	2.28	9.23
#FFFFFF	9.23	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#154D91

Deuteranopia (green-blind)

#00438D

Tritanopia (blue-blind)

#005662

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1f448e;
/* rgb */ color: rgb(31, 68, 142);
/* oklch */ color: oklch(40.5% 0.130 262.3);

Tailwind

colors: {
  custom: {
    50: '#6c77b0',
    500: '#1f448e',
    950: '#000000',
  },
}

SCSS

$custom: #1f448e;
$custom-light: #6c77b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f448e",
  "rgb": {
    "r": 31,
    "g": 68,
    "b": 142
  },
  "hsl": {
    "h": 220,
    "s": 64.162,
    "l": 33.922
  },
  "oklch": {
    "l": 0.40458,
    "c": 0.1302,
    "h": 262.3
  },
  "luminance": 0.06379
}

Semantic roles & 50–950 ramp

primary

#1F448E

secondary

#BB974D

accent

#B041E7

background

#F7F7FA

surface

#EDEDF5

border

#C8C8CF

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #1F448E

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

Preview Lab → · Contrast checker → · Palette generator →