#1F2E81#1F2E81

#1F2E81 is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.7% C 0.140 H 269.6°. Best body text is #FFFFFF at 11.89:1 contrast (WCAG AA passes).

Color values

HEX	#1F2E81
RGB	rgb(31, 46, 129)
HSL	hsl(231, 61%, 31%)
HSV	hsv(231, 76%, 51%)
CMYK	cmyk(76%, 64.3%, 0%, 49.4%)
CIE-LAB	lab(23.10, 24.90, -48.53)
CIE-LCH	lch(23.10, 54.54, 297.16°)
OKLab	oklab(34.68% -0.0011 -0.1402)
OKLCH	oklch(34.68% 0.14 269.6)
XYZ	xyz(5.5032, 3.8297, 21.2138)
Luminance	0.0383 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2E81 #81721F

analogous

#1F5F81 #1F2E81 #411F81

triadic

#1F2E81 #811F2E #2E811F

tetradic

#1F2E81 #811F5F #81721F #1F8141

square

#1F2E81 #811F5F #81721F #1F8141

split-complementary

#1F2E81 #81411F #5F811F

monochromatic

#070B1E #131C50 #1F2E81 #2B40B2 #475DD3

Accessibility & contrast

On white

11.89

#1F2E81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1F2E81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2E81

11.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2E81	#FFFFFF	#000000	##FFFFFF
##1F2E81	1.00	11.89	1.77	11.89
#FFFFFF	11.89	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C84

Deuteranopia (green-blind)

#00337F

Tritanopia (blue-blind)

#004353

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1f2e81;
/* rgb */ color: rgb(31, 46, 129);
/* oklch */ color: oklch(34.7% 0.140 269.6);

Tailwind

colors: {
  custom: {
    50: '#6a66a6',
    500: '#1f2e81',
    950: '#000000',
  },
}

SCSS

$custom: #1f2e81;
$custom-light: #6a66a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2e81",
  "rgb": {
    "r": 31,
    "g": 46,
    "b": 129
  },
  "hsl": {
    "h": 230.816,
    "s": 61.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.34682,
    "c": 0.14021,
    "h": 269.6
  },
  "luminance": 0.0383
}

Semantic roles & 50–950 ramp

primary

#1F2E81

secondary

#B4A348

accent

#CC43E4

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1F2E81

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

Preview Lab → · Contrast checker → · Palette generator →