#1F2F4E#1F2F4E

#1F2F4E is a dark, moderate blue. Relative luminance 0.029; OKLCH L 30.8% C 0.060 H 262.6°. Best body text is #FFFFFF at 13.34:1 contrast (WCAG AA passes).

Color values

HEX	#1F2F4E
RGB	rgb(31, 47, 78)
HSL	hsl(220, 43%, 21%)
HSV	hsv(220, 60%, 31%)
CMYK	cmyk(60.3%, 39.7%, 0%, 69.4%)
CIE-LAB	lab(19.53, 4.08, -21.10)
CIE-LCH	lch(19.53, 21.49, 280.96°)
OKLab	oklab(30.76% -0.0077 -0.0597)
OKLCH	oklch(30.76% 0.06 262.6)
XYZ	xyz(2.9563, 2.8742, 7.6052)
Luminance	0.0287 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2F4E #4E3E1F

analogous

#1F474E #1F2F4E #271F4E

triadic

#1F2F4E #4E1F2F #2F4E1F

tetradic

#1F2F4E #4E1F47 #4E3E1F #1F4E27

square

#1F2F4E #4E1F47 #4E3E1F #1F4E27

split-complementary

#1F2F4E #4E271F #474E1F

monochromatic

#090D16 #0E1522 #1F2F4E #30497A #4264A6

Accessibility & contrast

On white

13.34

#1F2F4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#1F2F4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2F4E

13.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2F4E	#FFFFFF	#000000	##FFFFFF
##1F2F4E	1.00	13.34	1.57	13.34
#FFFFFF	13.34	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#23324F

Deuteranopia (green-blind)

#1D2D4D

Tritanopia (blue-blind)

#05363A

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1f2f4e;
/* rgb */ color: rgb(31, 47, 78);
/* oklch */ color: oklch(30.8% 0.060 262.6);

Tailwind

colors: {
  custom: {
    50: '#5f677f',
    500: '#1f2f4e',
    950: '#000000',
  },
}

SCSS

$custom: #1f2f4e;
$custom-light: #5f677f;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2f4e",
  "rgb": {
    "r": 31,
    "g": 47,
    "b": 78
  },
  "hsl": {
    "h": 219.574,
    "s": 43.119,
    "l": 21.373
  },
  "oklch": {
    "l": 0.3076,
    "c": 0.06015,
    "h": 262.6
  },
  "luminance": 0.02874
}

Semantic roles & 50–950 ramp

primary

#1F2F4E

secondary

#836E46

accent

#A855D3

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#05060A

muted

#797A7C

Preview Lab

Preview with #1F2F4E

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

Preview Lab → · Contrast checker → · Palette generator →