#1F1777#1F1777

#1F1777 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.7% C 0.153 H 275.4°. Best body text is #FFFFFF at 14.51:1 contrast (WCAG AA passes).

Color values

HEX	#1F1777
RGB	rgb(31, 23, 119)
HSL	hsl(245, 68%, 28%)
HSV	hsv(245, 81%, 47%)
CMYK	cmyk(73.9%, 80.7%, 0%, 53.3%)
CIE-LAB	lab(16.68, 35.92, -52.73)
CIE-LCH	lch(16.68, 63.80, 304.26°)
OKLab	oklab(29.74% 0.0144 -0.1525)
OKLCH	oklch(29.74% 0.153 275.4)
XYZ	xyz(4.2001, 2.2356, 17.6594)
Luminance	0.0224 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1777 #6F7717

analogous

#173F77 #1F1777 #4F1777

triadic

#1F1777 #771F17 #17771F

tetradic

#1F1777 #77173F #6F7717 #17774F

square

#1F1777 #77173F #6F7717 #17774F

split-complementary

#1F1777 #774F17 #3F7717

monochromatic

#07051A #120D44 #1F1777 #2C21AA #3F31D7

Accessibility & contrast

On white

14.51

#1F1777 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#1F1777 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1777

14.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1777	#FFFFFF	#000000	##FFFFFF
##1F1777	1.00	14.51	1.45	14.51
#FFFFFF	14.51	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D7A

Deuteranopia (green-blind)

#002575

Tritanopia (blue-blind)

#003446

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1f1777;
/* rgb */ color: rgb(31, 23, 119);
/* oklch */ color: oklch(29.7% 0.153 275.4);

Tailwind

colors: {
  custom: {
    50: '#6a569f',
    500: '#1f1777',
    950: '#000000',
  },
}

SCSS

$custom: #1f1777;
$custom-light: #6a569f;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1777",
  "rgb": {
    "r": 31,
    "g": 23,
    "b": 119
  },
  "hsl": {
    "h": 245,
    "s": 67.606,
    "l": 27.843
  },
  "oklch": {
    "l": 0.29742,
    "c": 0.15314,
    "h": 275.4
  },
  "luminance": 0.02236
}

Semantic roles & 50–950 ramp

primary

#1F1777

secondary

#A3AC3E

accent

#EA3DDC

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#08030F

muted

#7A787E

Preview Lab

Preview with #1F1777

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

Preview Lab → · Contrast checker → · Palette generator →