#1F3D9E#1F3D9E

#1F3D9E is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.3% C 0.162 H 266.0°. Best body text is #FFFFFF at 9.46:1 contrast (WCAG AA passes).

Color values

HEX	#1F3D9E
RGB	rgb(31, 61, 158)
HSL	hsl(226, 67%, 37%)
HSV	hsv(226, 80%, 62%)
CMYK	cmyk(80.4%, 61.4%, 0%, 38%)
CIE-LAB	lab(29.65, 25.96, -55.73)
CIE-LCH	lch(29.65, 61.48, 294.97°)
OKLab	oklab(40.34% -0.0113 -0.1611)
OKLCH	oklch(40.34% 0.162 266)
XYZ	xyz(8.4032, 6.0964, 33.0750)
Luminance	0.0610 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3D9E #9E801F

analogous

#1F7D9E #1F3D9E #411F9E

triadic

#1F3D9E #9E1F3D #3D9E1F

tetradic

#1F3D9E #9E1F7D #9E801F #1F9E41

square

#1F3D9E #9E1F7D #9E801F #1F9E41

split-complementary

#1F3D9E #9E411F #7D9E1F

monochromatic

#0B1538 #15296B #1F3D9E #2951D1 #5978DE

Accessibility & contrast

On white

9.46

#1F3D9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#1F3D9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3D9E

9.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3D9E	#FFFFFF	#000000	##FFFFFF
##1F3D9E	1.00	9.46	2.22	9.46
#FFFFFF	9.46	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA1

Deuteranopia (green-blind)

#00409C

Tritanopia (blue-blind)

#005667

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1f3d9e;
/* rgb */ color: rgb(31, 61, 158);
/* oklch */ color: oklch(40.3% 0.162 266.0);

Tailwind

colors: {
  custom: {
    50: '#7172bb',
    500: '#1f3d9e',
    950: '#000000',
  },
}

SCSS

$custom: #1f3d9e;
$custom-light: #7172bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3d9e",
  "rgb": {
    "r": 31,
    "g": 61,
    "b": 158
  },
  "hsl": {
    "h": 225.827,
    "s": 67.196,
    "l": 37.059
  },
  "oklch": {
    "l": 0.40335,
    "c": 0.16154,
    "h": 266
  },
  "luminance": 0.06097
}

Semantic roles & 50–950 ramp

primary

#1F3D9E

secondary

#C2A956

accent

#C13EEA

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1F3D9E

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

Preview Lab → · Contrast checker → · Palette generator →