#1F3E9C#1F3E9C

#1F3E9C is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.4% C 0.158 H 265.6°. Best body text is #FFFFFF at 9.43:1 contrast (WCAG AA passes).

Color values

HEX	#1F3E9C
RGB	rgb(31, 62, 156)
HSL	hsl(225, 67%, 37%)
HSV	hsv(225, 80%, 61%)
CMYK	cmyk(80.1%, 60.3%, 0%, 38.8%)
CIE-LAB	lab(29.75, 24.50, -54.36)
CIE-LCH	lch(29.75, 59.62, 294.26°)
OKLab	oklab(40.36% -0.012 -0.1571)
OKLCH	oklch(40.36% 0.158 265.6)
XYZ	xyz(8.2863, 6.1359, 32.1937)
Luminance	0.0614 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3E9C #9C7D1F

analogous

#1F7D9C #1F3E9C #3F1F9C

triadic

#1F3E9C #9C1F3E #3E9C1F

tetradic

#1F3E9C #9C1F7D #9C7D1F #1F9C3F

square

#1F3E9C #9C1F7D #9C7D1F #1F9C3F

split-complementary

#1F3E9C #9C3F1F #7D9C1F

monochromatic

#0B1536 #152A69 #1F3E9C #2952CF #5879DE

Accessibility & contrast

On white

9.43

#1F3E9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#1F3E9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3E9C

9.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3E9C	#FFFFFF	#000000	##FFFFFF
##1F3E9C	1.00	9.43	2.23	9.43
#FFFFFF	9.43	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9F

Deuteranopia (green-blind)

#00409A

Tritanopia (blue-blind)

#005667

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1f3e9c;
/* rgb */ color: rgb(31, 62, 156);
/* oklch */ color: oklch(40.4% 0.158 265.6);

Tailwind

colors: {
  custom: {
    50: '#7072ba',
    500: '#1f3e9c',
    950: '#000000',
  },
}

SCSS

$custom: #1f3e9c;
$custom-light: #7072ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3e9c",
  "rgb": {
    "r": 31,
    "g": 62,
    "b": 156
  },
  "hsl": {
    "h": 225.12,
    "s": 66.845,
    "l": 36.667
  },
  "oklch": {
    "l": 0.40356,
    "c": 0.15755,
    "h": 265.6
  },
  "luminance": 0.06137
}

Semantic roles & 50–950 ramp

primary

#1F3E9C

secondary

#C1A755

accent

#BF3EEA

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1F3E9C

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

Preview Lab → · Contrast checker → · Palette generator →