#1F3D9C#1F3D9C

#1F3D9C is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.2% C 0.159 H 265.9°. Best body text is #FFFFFF at 9.52:1 contrast (WCAG AA passes).

Color values

HEX	#1F3D9C
RGB	rgb(31, 61, 156)
HSL	hsl(226, 67%, 37%)
HSV	hsv(226, 80%, 61%)
CMYK	cmyk(80.1%, 60.9%, 0%, 38.8%)
CIE-LAB	lab(29.48, 25.18, -54.80)
CIE-LCH	lch(29.48, 60.30, 294.68°)
OKLab	oklab(40.16% -0.0114 -0.1584)
OKLCH	oklch(40.16% 0.159 265.9)
XYZ	xyz(8.2325, 6.0281, 32.1757)
Luminance	0.0603 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3D9C #9C7E1F

analogous

#1F7C9C #1F3D9C #401F9C

triadic

#1F3D9C #9C1F3D #3D9C1F

tetradic

#1F3D9C #9C1F7C #9C7E1F #1F9C40

square

#1F3D9C #9C1F7C #9C7E1F #1F9C40

split-complementary

#1F3D9C #9C401F #7C9C1F

monochromatic

#0B1536 #152969 #1F3D9C #2951CF #5878DE

Accessibility & contrast

On white

9.52

#1F3D9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#1F3D9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3D9C

9.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3D9C	#FFFFFF	#000000	##FFFFFF
##1F3D9C	1.00	9.52	2.21	9.52
#FFFFFF	9.52	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9F

Deuteranopia (green-blind)

#00409A

Tritanopia (blue-blind)

#005566

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1f3d9c;
/* rgb */ color: rgb(31, 61, 156);
/* oklch */ color: oklch(40.2% 0.159 265.9);

Tailwind

colors: {
  custom: {
    50: '#7072ba',
    500: '#1f3d9c',
    950: '#000000',
  },
}

SCSS

$custom: #1f3d9c;
$custom-light: #7072ba;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3d9c",
  "rgb": {
    "r": 31,
    "g": 61,
    "b": 156
  },
  "hsl": {
    "h": 225.6,
    "s": 66.845,
    "l": 36.667
  },
  "oklch": {
    "l": 0.40155,
    "c": 0.15881,
    "h": 265.9
  },
  "luminance": 0.06029
}

Semantic roles & 50–950 ramp

primary

#1F3D9C

secondary

#C1A855

accent

#C13EEA

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1F3D9C

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

Preview Lab → · Contrast checker → · Palette generator →