#1F3D7A#1F3D7A

#1F3D7A is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.3% C 0.110 H 262.6°. Best body text is #FFFFFF at 10.46:1 contrast (WCAG AA passes).

Color values

HEX	#1F3D7A
RGB	rgb(31, 61, 122)
HSL	hsl(220, 59%, 30%)
HSV	hsv(220, 75%, 48%)
CMYK	cmyk(74.6%, 50%, 0%, 52.2%)
CIE-LAB	lab(26.83, 11.62, -38.07)
CIE-LCH	lch(26.83, 39.80, 286.97°)
OKLab	oklab(37.31% -0.0142 -0.1092)
OKLCH	oklch(37.31% 0.11 262.6)
XYZ	xyz(5.7454, 5.0333, 19.0773)
Luminance	0.0503 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3D7A #7A5C1F

analogous

#1F6A7A #1F3D7A #2F1F7A

triadic

#1F3D7A #7A1F3D #3D7A1F

tetradic

#1F3D7A #7A1F6A #7A5C1F #1F7A2F

square

#1F3D7A #7A1F6A #7A5C1F #1F7A2F

split-complementary

#1F3D7A #7A2F1F #6A7A1F

monochromatic

#060C18 #132549 #1F3D7A #2B55AB #4472CF

Accessibility & contrast

On white

10.46

#1F3D7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#1F3D7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3D7A

10.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3D7A	#FFFFFF	#000000	##FFFFFF
##1F3D7A	1.00	10.46	2.01	10.46
#FFFFFF	10.46	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C447C

Deuteranopia (green-blind)

#033B79

Tritanopia (blue-blind)

#004B55

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #1f3d7a;
/* rgb */ color: rgb(31, 61, 122);
/* oklch */ color: oklch(37.3% 0.110 262.6);

Tailwind

colors: {
  custom: {
    50: '#6872a1',
    500: '#1f3d7a',
    950: '#000000',
  },
}

SCSS

$custom: #1f3d7a;
$custom-light: #6872a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3d7a",
  "rgb": {
    "r": 31,
    "g": 61,
    "b": 122
  },
  "hsl": {
    "h": 220.22,
    "s": 59.477,
    "l": 30
  },
  "oklch": {
    "l": 0.37313,
    "c": 0.11015,
    "h": 262.6
  },
  "luminance": 0.05034
}

Semantic roles & 50–950 ramp

primary

#1F3D7A

secondary

#AD8C47

accent

#AF45E3

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070F

muted

#7A7A7E

Preview Lab

Preview with #1F3D7A

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

Preview Lab → · Contrast checker → · Palette generator →