#1F2255#1F2255

#1F2255 is a dark, moderate blue. Relative luminance 0.021; OKLCH L 28.2% C 0.091 H 276.3°. Best body text is #FFFFFF at 14.81:1 contrast (WCAG AA passes).

Color values

HEX	#1F2255
RGB	rgb(31, 34, 85)
HSL	hsl(237, 47%, 23%)
HSV	hsv(237, 64%, 33%)
CMYK	cmyk(63.5%, 60%, 0%, 66.7%)
CIE-LAB	lab(15.96, 16.24, -31.53)
CIE-LCH	lch(15.96, 35.47, 297.24°)
OKLab	oklab(28.19% 0.01 -0.0904)
OKLCH	oklch(28.19% 0.091 276.3)
XYZ	xyz(2.7763, 2.0910, 8.8499)
Luminance	0.0209 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2255 #55521F

analogous

#1F3D55 #1F2255 #371F55

triadic

#1F2255 #551F22 #22551F

tetradic

#1F2255 #551F3D #55521F #1F5537

square

#1F2255 #551F3D #55521F #1F5537

split-complementary

#1F2255 #55371F #3D551F

monochromatic

#080916 #0F1028 #1F2255 #2F3482 #4046AF

Accessibility & contrast

On white

14.81

#1F2255 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#1F2255 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2255

14.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2255	#FFFFFF	#000000	##FFFFFF
##1F2255	1.00	14.81	1.42	14.81
#FFFFFF	14.81	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#012A57

Deuteranopia (green-blind)

#002554

Tritanopia (blue-blind)

#002E37

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #1f2255;
/* rgb */ color: rgb(31, 34, 85);
/* oklch */ color: oklch(28.2% 0.091 276.3);

Tailwind

colors: {
  custom: {
    50: '#615d85',
    500: '#1f2255',
    950: '#000000',
  },
}

SCSS

$custom: #1f2255;
$custom-light: #615d85;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2255",
  "rgb": {
    "r": 31,
    "g": 34,
    "b": 85
  },
  "hsl": {
    "h": 236.667,
    "s": 46.552,
    "l": 22.745
  },
  "oklch": {
    "l": 0.28191,
    "c": 0.09097,
    "h": 276.3
  },
  "luminance": 0.02091
}

Semantic roles & 50–950 ramp

primary

#1F2255

secondary

#8A8646

accent

#CF52D6

background

#F5F5F8

surface

#EAE9EF

border

#C6C5CA

text

#05040B

muted

#79797C

Preview Lab

Preview with #1F2255

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

Preview Lab → · Contrast checker → · Palette generator →