#1F2155#1F2155

#1F2155 is a dark, moderate blue. Relative luminance 0.020; OKLCH L 28.0% C 0.092 H 276.9°. Best body text is #FFFFFF at 14.93:1 contrast (WCAG AA passes).

Color values

HEX	#1F2155
RGB	rgb(31, 33, 85)
HSL	hsl(238, 47%, 23%)
HSV	hsv(238, 64%, 33%)
CMYK	cmyk(63.5%, 61.2%, 0%, 66.7%)
CIE-LAB	lab(15.67, 16.96, -32.00)
CIE-LCH	lch(15.67, 36.22, 297.92°)
OKLab	oklab(27.98% 0.0112 -0.0918)
OKLCH	oklch(27.98% 0.092 276.9)
XYZ	xyz(2.7481, 2.0347, 8.8405)
Luminance	0.0204 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2155 #55531F

analogous

#1F3C55 #1F2155 #381F55

triadic

#1F2155 #551F21 #21551F

tetradic

#1F2155 #551F3C #55531F #1F5538

square

#1F2155 #551F3C #55531F #1F5538

split-complementary

#1F2155 #55381F #3C551F

monochromatic

#080916 #0F1028 #1F2155 #2F3282 #4044AF

Accessibility & contrast

On white

14.93

#1F2155 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#1F2155 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2155

14.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2155	#FFFFFF	#000000	##FFFFFF
##1F2155	1.00	14.93	1.41	14.93
#FFFFFF	14.93	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002957

Deuteranopia (green-blind)

#002554

Tritanopia (blue-blind)

#002D37

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #1f2155;
/* rgb */ color: rgb(31, 33, 85);
/* oklch */ color: oklch(28.0% 0.092 276.9);

Tailwind

colors: {
  custom: {
    50: '#615c85',
    500: '#1f2155',
    950: '#000000',
  },
}

SCSS

$custom: #1f2155;
$custom-light: #615c85;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2155",
  "rgb": {
    "r": 31,
    "g": 33,
    "b": 85
  },
  "hsl": {
    "h": 237.778,
    "s": 46.552,
    "l": 22.745
  },
  "oklch": {
    "l": 0.27976,
    "c": 0.09249,
    "h": 276.9
  },
  "luminance": 0.02035
}

Semantic roles & 50–950 ramp

primary

#1F2155

secondary

#8A8746

accent

#D152D6

background

#F5F5F8

surface

#EAE9EF

border

#C6C5CA

text

#05040B

muted

#79797C

Preview Lab

Preview with #1F2155

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

Preview Lab → · Contrast checker → · Palette generator →