#1F3784#1F3784

#1F3784 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.8% C 0.133 H 266.6°. Best body text is #FFFFFF at 10.84:1 contrast (WCAG AA passes).

Color values

HEX	#1F3784
RGB	rgb(31, 55, 132)
HSL	hsl(226, 62%, 32%)
HSV	hsv(226, 77%, 52%)
CMYK	cmyk(76.5%, 58.3%, 0%, 48.2%)
CIE-LAB	lab(25.83, 19.83, -45.96)
CIE-LCH	lch(25.83, 50.06, 293.33°)
OKLab	oklab(36.8% -0.0079 -0.1325)
OKLCH	oklch(36.8% 0.133 266.6)
XYZ	xyz(6.0947, 4.6890, 22.4092)
Luminance	0.0469 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3784 #846C1F

analogous

#1F6984 #1F3784 #3A1F84

triadic

#1F3784 #841F37 #37841F

tetradic

#1F3784 #841F69 #846C1F #1F843A

square

#1F3784 #841F69 #846C1F #1F843A

split-complementary

#1F3784 #843A1F #69841F

monochromatic

#080E21 #132252 #1F3784 #2B4CB6 #496AD4

Accessibility & contrast

On white

10.84

#1F3784 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#1F3784 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3784

10.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3784	#FFFFFF	#000000	##FFFFFF
##1F3784	1.00	10.84	1.94	10.84
#FFFFFF	10.84	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004287

Deuteranopia (green-blind)

#003982

Tritanopia (blue-blind)

#004A58

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1f3784;
/* rgb */ color: rgb(31, 55, 132);
/* oklch */ color: oklch(36.8% 0.133 266.6);

Tailwind

colors: {
  custom: {
    50: '#6a6da8',
    500: '#1f3784',
    950: '#000000',
  },
}

SCSS

$custom: #1f3784;
$custom-light: #6a6da8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3784",
  "rgb": {
    "r": 31,
    "g": 55,
    "b": 132
  },
  "hsl": {
    "h": 225.743,
    "s": 61.963,
    "l": 31.961
  },
  "oklch": {
    "l": 0.36796,
    "c": 0.13278,
    "h": 266.6
  },
  "luminance": 0.0469
}

Semantic roles & 50–950 ramp

primary

#1F3784

secondary

#B79C48

accent

#BE43E5

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #1F3784

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

Preview Lab → · Contrast checker → · Palette generator →