#1F2F52#1F2F52

#1F2F52 is a dark, moderate blue. Relative luminance 0.029; OKLCH L 31.0% C 0.067 H 264.3°. Best body text is #FFFFFF at 13.23:1 contrast (WCAG AA passes).

Color values

HEX	#1F2F52
RGB	rgb(31, 47, 82)
HSL	hsl(221, 45%, 22%)
HSV	hsv(221, 62%, 32%)
CMYK	cmyk(62.2%, 42.7%, 0%, 67.8%)
CIE-LAB	lab(19.77, 5.62, -23.40)
CIE-LCH	lch(19.77, 24.07, 283.50°)
OKLab	oklab(31.03% -0.0066 -0.0664)
OKLCH	oklch(31.03% 0.067 264.3)
XYZ	xyz(3.1041, 2.9333, 8.3836)
Luminance	0.0293 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2F52 #52421F

analogous

#1F4952 #1F2F52 #281F52

triadic

#1F2F52 #521F2F #2F521F

tetradic

#1F2F52 #521F49 #52421F #1F5228

square

#1F2F52 #521F49 #52421F #1F5228

split-complementary

#1F2F52 #52281F #49521F

monochromatic

#080D16 #0E1626 #1F2F52 #30487E #4162AB

Accessibility & contrast

On white

13.23

#1F2F52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1F2F52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2F52

13.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2F52	#FFFFFF	#000000	##FFFFFF
##1F2F52	1.00	13.23	1.59	13.23
#FFFFFF	13.23	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#203253

Deuteranopia (green-blind)

#1A2E51

Tritanopia (blue-blind)

#00373C

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1f2f52;
/* rgb */ color: rgb(31, 47, 82);
/* oklch */ color: oklch(31.0% 0.067 264.3);

Tailwind

colors: {
  custom: {
    50: '#5f6783',
    500: '#1f2f52',
    950: '#000000',
  },
}

SCSS

$custom: #1f2f52;
$custom-light: #5f6783;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2f52",
  "rgb": {
    "r": 31,
    "g": 47,
    "b": 82
  },
  "hsl": {
    "h": 221.176,
    "s": 45.133,
    "l": 22.157
  },
  "oklch": {
    "l": 0.31026,
    "c": 0.06671,
    "h": 264.3
  },
  "luminance": 0.02934
}

Semantic roles & 50–950 ramp

primary

#1F2F52

secondary

#877246

accent

#AC53D5

background

#F5F6F8

surface

#EAEBEF

border

#C6C6CA

text

#05060A

muted

#797A7C

Preview Lab

Preview with #1F2F52

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

Preview Lab → · Contrast checker → · Palette generator →