#1F4483#1F4483

#1F4483 is a dark, moderate blue. Relative luminance 0.061; OKLCH L 39.6% C 0.114 H 260.3°. Best body text is #FFFFFF at 9.49:1 contrast (WCAG AA passes).

Color values

HEX	#1F4483
RGB	rgb(31, 68, 131)
HSL	hsl(218, 62%, 32%)
HSV	hsv(218, 76%, 51%)
CMYK	cmyk(76.3%, 48.1%, 0%, 48.6%)
CIE-LAB	lab(29.57, 10.40, -39.29)
CIE-LCH	lch(29.57, 40.64, 284.82°)
OKLab	oklab(39.62% -0.0192 -0.1127)
OKLCH	oklch(39.62% 0.114 260.3)
XYZ	xyz(6.7275, 6.0635, 22.2841)
Luminance	0.0606 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4483 #835E1F

analogous

#1F7683 #1F4483 #2C1F83

triadic

#1F4483 #831F44 #44831F

tetradic

#1F4483 #831F76 #835E1F #1F832C

square

#1F4483 #831F76 #835E1F #1F832C

split-complementary

#1F4483 #832C1F #76831F

monochromatic

#081120 #132A52 #1F4483 #2B5EB4 #497CD4

Accessibility & contrast

On white

9.49

#1F4483 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#1F4483 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4483

9.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4483	#FFFFFF	#000000	##FFFFFF
##1F4483	1.00	9.49	2.21	9.49
#FFFFFF	9.49	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234B85

Deuteranopia (green-blind)

#0A4182

Tritanopia (blue-blind)

#00535D

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1f4483;
/* rgb */ color: rgb(31, 68, 131);
/* oklch */ color: oklch(39.6% 0.114 260.3);

Tailwind

colors: {
  custom: {
    50: '#6977a7',
    500: '#1f4483',
    950: '#000000',
  },
}

SCSS

$custom: #1f4483;
$custom-light: #6977a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4483",
  "rgb": {
    "r": 31,
    "g": 68,
    "b": 131
  },
  "hsl": {
    "h": 217.8,
    "s": 61.728,
    "l": 31.765
  },
  "oklch": {
    "l": 0.39618,
    "c": 0.1143,
    "h": 260.3
  },
  "luminance": 0.06064
}

Semantic roles & 50–950 ramp

primary

#1F4483

secondary

#B68D48

accent

#A943E5

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1F4483

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

Preview Lab → · Contrast checker → · Palette generator →