#1F2B87#1F2B87

#1F2B87 is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.7% C 0.152 H 270.2°. Best body text is #FFFFFF at 11.98:1 contrast (WCAG AA passes).

Color values

HEX	#1F2B87
RGB	rgb(31, 43, 135)
HSL	hsl(233, 63%, 33%)
HSV	hsv(233, 77%, 53%)
CMYK	cmyk(77%, 68.1%, 0%, 47.1%)
CIE-LAB	lab(22.89, 29.23, -52.64)
CIE-LCH	lch(22.89, 60.22, 299.04°)
OKLab	oklab(34.7% 0.0006 -0.1523)
OKLCH	oklch(34.7% 0.152 270.2)
XYZ	xyz(5.8006, 3.7677, 23.3385)
Luminance	0.0377 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2B87 #877B1F

analogous

#1F5F87 #1F2B87 #471F87

triadic

#1F2B87 #871F2B #2B871F

tetradic

#1F2B87 #871F5F #877B1F #1F8747

square

#1F2B87 #871F5F #877B1F #1F8747

split-complementary

#1F2B87 #87471F #5F871F

monochromatic

#080B23 #141B55 #1F2B87 #2A3BB9 #4B5BD6

Accessibility & contrast

On white

11.98

#1F2B87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#1F2B87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2B87

11.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2B87	#FFFFFF	#000000	##FFFFFF
##1F2B87	1.00	11.98	1.75	11.98
#FFFFFF	11.98	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C8A

Deuteranopia (green-blind)

#003285

Tritanopia (blue-blind)

#004455

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1f2b87;
/* rgb */ color: rgb(31, 43, 135);
/* oklch */ color: oklch(34.7% 0.152 270.2);

Tailwind

colors: {
  custom: {
    50: '#6c64ab',
    500: '#1f2b87',
    950: '#000000',
  },
}

SCSS

$custom: #1f2b87;
$custom-light: #6c64ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2b87",
  "rgb": {
    "r": 31,
    "g": 43,
    "b": 135
  },
  "hsl": {
    "h": 233.077,
    "s": 62.651,
    "l": 32.549
  },
  "oklch": {
    "l": 0.347,
    "c": 0.15228,
    "h": 270.2
  },
  "luminance": 0.03768
}

Semantic roles & 50–950 ramp

primary

#1F2B87

secondary

#B8AB4A

accent

#D342E6

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080510

muted

#7B7A7F

Preview Lab

Preview with #1F2B87

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

Preview Lab → · Contrast checker → · Palette generator →