#1F4584#1F4584

#1F4584 is a dark, moderate blue. Relative luminance 0.062; OKLCH L 39.9% C 0.114 H 260.0°. Best body text is #FFFFFF at 9.36:1 contrast (WCAG AA passes).

Color values

HEX	#1F4584
RGB	rgb(31, 69, 132)
HSL	hsl(217, 62%, 32%)
HSV	hsv(217, 77%, 52%)
CMYK	cmyk(76.5%, 47.7%, 0%, 48.2%)
CIE-LAB	lab(29.94, 10.11, -39.31)
CIE-LCH	lch(29.94, 40.59, 284.42°)
OKLab	oklab(39.92% -0.0199 -0.1127)
OKLCH	oklch(39.92% 0.114 260)
XYZ	xyz(6.8565, 6.2127, 22.6631)
Luminance	0.0621 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4584 #845E1F

analogous

#1F7884 #1F4584 #2C1F84

triadic

#1F4584 #841F45 #45841F

tetradic

#1F4584 #841F78 #845E1F #1F842C

square

#1F4584 #841F78 #845E1F #1F842C

split-complementary

#1F4584 #842C1F #78841F

monochromatic

#081121 #132B52 #1F4584 #2B5FB6 #497DD4

Accessibility & contrast

On white

9.36

#1F4584 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#1F4584 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4584

9.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4584	#FFFFFF	#000000	##FFFFFF
##1F4584	1.00	9.36	2.24	9.36
#FFFFFF	9.36	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#244B86

Deuteranopia (green-blind)

#0C4283

Tritanopia (blue-blind)

#00545E

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1f4584;
/* rgb */ color: rgb(31, 69, 132);
/* oklch */ color: oklch(39.9% 0.114 260.0);

Tailwind

colors: {
  custom: {
    50: '#6a78a8',
    500: '#1f4584',
    950: '#000000',
  },
}

SCSS

$custom: #1f4584;
$custom-light: #6a78a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4584",
  "rgb": {
    "r": 31,
    "g": 69,
    "b": 132
  },
  "hsl": {
    "h": 217.426,
    "s": 61.963,
    "l": 31.961
  },
  "oklch": {
    "l": 0.39925,
    "c": 0.11449,
    "h": 260
  },
  "luminance": 0.06213
}

Semantic roles & 50–950 ramp

primary

#1F4584

secondary

#B78D48

accent

#A843E5

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1F4584

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

Preview Lab → · Contrast checker → · Palette generator →