#1F3E82#1F3E82

#1F3E82 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.2% C 0.121 H 263.4°. Best body text is #FFFFFF at 10.15:1 contrast (WCAG AA passes).

Color values

HEX	#1F3E82
RGB	rgb(31, 62, 130)
HSL	hsl(221, 61%, 32%)
HSV	hsv(221, 76%, 51%)
CMYK	cmyk(76.2%, 52.3%, 0%, 49%)
CIE-LAB	lab(27.70, 14.14, -41.68)
CIE-LCH	lch(27.70, 44.01, 288.74°)
OKLab	oklab(38.16% -0.0139 -0.1198)
OKLCH	oklch(38.16% 0.121 263.4)
XYZ	xyz(6.3155, 5.3476, 21.8141)
Luminance	0.0535 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3E82 #82631F

analogous

#1F7082 #1F3E82 #321F82

triadic

#1F3E82 #821F3E #3E821F

tetradic

#1F3E82 #821F70 #82631F #1F8232

square

#1F3E82 #821F70 #82631F #1F8232

split-complementary

#1F3E82 #82321F #70821F

monochromatic

#070F1F #132651 #1F3E82 #2B56B3 #4874D3

Accessibility & contrast

On white

10.15

#1F3E82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#1F3E82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3E82

10.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3E82	#FFFFFF	#000000	##FFFFFF
##1F3E82	1.00	10.15	2.07	10.15
#FFFFFF	10.15	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#144684

Deuteranopia (green-blind)

#003D81

Tritanopia (blue-blind)

#004E5A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1f3e82;
/* rgb */ color: rgb(31, 62, 130);
/* oklch */ color: oklch(38.2% 0.121 263.4);

Tailwind

colors: {
  custom: {
    50: '#6972a7',
    500: '#1f3e82',
    950: '#000000',
  },
}

SCSS

$custom: #1f3e82;
$custom-light: #6972a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3e82",
  "rgb": {
    "r": 31,
    "g": 62,
    "b": 130
  },
  "hsl": {
    "h": 221.212,
    "s": 61.491,
    "l": 31.569
  },
  "oklch": {
    "l": 0.38164,
    "c": 0.12064,
    "h": 263.4
  },
  "luminance": 0.05348
}

Semantic roles & 50–950 ramp

primary

#1F3E82

secondary

#B59348

accent

#B243E5

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1F3E82

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

Preview Lab → · Contrast checker → · Palette generator →