#1F2787#1F2787

#1F2787 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.0% C 0.157 H 271.1°. Best body text is #FFFFFF at 12.36:1 contrast (WCAG AA passes).

Color values

HEX	#1F2787
RGB	rgb(31, 39, 135)
HSL	hsl(235, 63%, 33%)
HSV	hsv(235, 77%, 53%)
CMYK	cmyk(77%, 71.1%, 0%, 47.1%)
CIE-LAB	lab(21.91, 31.87, -54.25)
CIE-LCH	lch(21.91, 62.92, 300.43°)
OKLab	oklab(33.99% 0.003 -0.157)
OKLCH	oklch(33.99% 0.157 271.1)
XYZ	xyz(5.6623, 3.4910, 23.2924)
Luminance	0.0349 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2787 #877F1F

analogous

#1F5B87 #1F2787 #4B1F87

triadic

#1F2787 #871F27 #27871F

tetradic

#1F2787 #871F5B #877F1F #1F874B

square

#1F2787 #871F5B #877F1F #1F874B

split-complementary

#1F2787 #874B1F #5B871F

monochromatic

#080A23 #141955 #1F2787 #2A35B9 #4B55D6

Accessibility & contrast

On white

12.36

#1F2787 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1F2787 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2787

12.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2787	#FFFFFF	#000000	##FFFFFF
##1F2787	1.00	12.36	1.70	12.36
#FFFFFF	12.36	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00398A

Deuteranopia (green-blind)

#002F85

Tritanopia (blue-blind)

#004154

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f2787;
/* rgb */ color: rgb(31, 39, 135);
/* oklch */ color: oklch(34.0% 0.157 271.1);

Tailwind

colors: {
  custom: {
    50: '#6d61ab',
    500: '#1f2787',
    950: '#000000',
  },
}

SCSS

$custom: #1f2787;
$custom-light: #6d61ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2787",
  "rgb": {
    "r": 31,
    "g": 39,
    "b": 135
  },
  "hsl": {
    "h": 235.385,
    "s": 62.651,
    "l": 32.549
  },
  "oklch": {
    "l": 0.33991,
    "c": 0.15701,
    "h": 271.1
  },
  "luminance": 0.03492
}

Semantic roles & 50–950 ramp

primary

#1F2787

secondary

#B8B04A

accent

#D942E6

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1F2787

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

Preview Lab → · Contrast checker → · Palette generator →