#1F3E9A#1F3E9A

#1F3E9A is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.2% C 0.155 H 265.5°. Best body text is #FFFFFF at 9.49:1 contrast (WCAG AA passes).

Color values

HEX	#1F3E9A
RGB	rgb(31, 62, 154)
HSL	hsl(225, 66%, 36%)
HSV	hsv(225, 80%, 60%)
CMYK	cmyk(79.9%, 59.7%, 0%, 39.6%)
CIE-LAB	lab(29.59, 23.71, -53.41)
CIE-LCH	lch(29.59, 58.44, 293.94°)
OKLab	oklab(40.18% -0.0121 -0.1543)
OKLCH	oklch(40.18% 0.155 265.5)
XYZ	xyz(8.1184, 6.0687, 31.3091)
Luminance	0.0607 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3E9A #9A7B1F

analogous

#1F7C9A #1F3E9A #3E1F9A

triadic

#1F3E9A #9A1F3E #3E9A1F

tetradic

#1F3E9A #9A1F7C #9A7B1F #1F9A3E

square

#1F3E9A #9A1F7C #9A7B1F #1F9A3E

split-complementary

#1F3E9A #9A3E1F #7C9A1F

monochromatic

#0A1534 #152967 #1F3E9A #2953CD #5678DD

Accessibility & contrast

On white

9.49

#1F3E9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#1F3E9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3E9A

9.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3E9A	#FFFFFF	#000000	##FFFFFF
##1F3E9A	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)

#004C9D

Deuteranopia (green-blind)

#004098

Tritanopia (blue-blind)

#005566

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1f3e9a;
/* rgb */ color: rgb(31, 62, 154);
/* oklch */ color: oklch(40.2% 0.155 265.5);

Tailwind

colors: {
  custom: {
    50: '#7072b9',
    500: '#1f3e9a',
    950: '#000000',
  },
}

SCSS

$custom: #1f3e9a;
$custom-light: #7072b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3e9a",
  "rgb": {
    "r": 31,
    "g": 62,
    "b": 154
  },
  "hsl": {
    "h": 224.878,
    "s": 66.486,
    "l": 36.275
  },
  "oklch": {
    "l": 0.40178,
    "c": 0.1548,
    "h": 265.5
  },
  "luminance": 0.0607
}

Semantic roles & 50–950 ramp

primary

#1F3E9A

secondary

#C1A554

accent

#BE3EE9

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090811

muted

#7B7B80

Preview Lab

Preview with #1F3E9A

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

Preview Lab → · Contrast checker → · Palette generator →