#1F1A71#1F1A71

#1F1A71 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.5% C 0.142 H 275.7°. Best body text is #FFFFFF at 14.54:1 contrast (WCAG AA passes).

Color values

HEX	#1F1A71
RGB	rgb(31, 26, 113)
HSL	hsl(243, 63%, 27%)
HSV	hsv(243, 77%, 44%)
CMYK	cmyk(72.6%, 77%, 0%, 55.7%)
CIE-LAB	lab(16.61, 32.10, -48.96)
CIE-LCH	lch(16.61, 58.55, 303.24°)
OKLab	oklab(29.49% 0.0142 -0.1415)
OKLCH	oklch(29.49% 0.142 275.7)
XYZ	xyz(3.9141, 2.2220, 15.8422)
Luminance	0.0222 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F1A71 #6C711A

analogous

#1A4171 #1F1A71 #4A1A71

triadic

#1F1A71 #711F1A #1A711F

tetradic

#1F1A71 #711A41 #6C711A #1A714A

square

#1F1A71 #711A41 #6C711A #1A714A

split-complementary

#1F1A71 #714A1A #41711A

monochromatic

#070619 #110F3F #1F1A71 #2D25A3 #3E35D0

Accessibility & contrast

On white

14.54

#1F1A71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#1F1A71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F1A71

14.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F1A71	#FFFFFF	#000000	##FFFFFF
##1F1A71	1.00	14.54	1.44	14.54
#FFFFFF	14.54	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D74

Deuteranopia (green-blind)

#00256F

Tritanopia (blue-blind)

#003344

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1f1a71;
/* rgb */ color: rgb(31, 26, 113);
/* oklch */ color: oklch(29.5% 0.142 275.7);

Tailwind

colors: {
  custom: {
    50: '#68589b',
    500: '#1f1a71',
    950: '#000000',
  },
}

SCSS

$custom: #1f1a71;
$custom-light: #68589b;
$custom-dark: #000000;

JSON

{
  "hex": "#1f1a71",
  "rgb": {
    "r": 31,
    "g": 26,
    "b": 113
  },
  "hsl": {
    "h": 243.448,
    "s": 62.59,
    "l": 27.255
  },
  "oklch": {
    "l": 0.29492,
    "c": 0.14224,
    "h": 275.7
  },
  "luminance": 0.02222
}

Semantic roles & 50–950 ramp

primary

#1F1A71

secondary

#A0A641

accent

#E642DC

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1F1A71

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

Preview Lab → · Contrast checker → · Palette generator →