#1F286F#1F286F

#1F286F is a dark, vivid blue. Relative luminance 0.030; OKLCH L 31.8% C 0.122 H 271.9°. Best body text is #FFFFFF at 13.20:1 contrast (WCAG AA passes).

Color values

HEX	#1F286F
RGB	rgb(31, 40, 111)
HSL	hsl(233, 56%, 28%)
HSV	hsv(233, 72%, 44%)
CMYK	cmyk(72.1%, 64%, 0%, 56.5%)
CIE-LAB	lab(19.87, 22.06, -42.33)
CIE-LCH	lch(19.87, 47.73, 297.52°)
OKLab	oklab(31.79% 0.0041 -0.1221)
OKLCH	oklch(31.79% 0.122 271.9)
XYZ	xyz(4.1921, 2.9562, 15.3855)
Luminance	0.0296 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F286F #6F661F

analogous

#1F506F #1F286F #3E1F6F

triadic

#1F286F #6F1F28 #286F1F

tetradic

#1F286F #6F1F50 #6F661F #1F6F3E

square

#1F286F #6F1F50 #6F661F #1F6F3E

split-complementary

#1F286F #6F3E1F #506F1F

monochromatic

#070918 #12173F #1F286F #2C399F #3F4FC9

Accessibility & contrast

On white

13.20

#1F286F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#1F286F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F286F

13.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F286F	#FFFFFF	#000000	##FFFFFF
##1F286F	1.00	13.20	1.59	13.20
#FFFFFF	13.20	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003471

Deuteranopia (green-blind)

#002C6E

Tritanopia (blue-blind)

#003A47

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1f286f;
/* rgb */ color: rgb(31, 40, 111);
/* oklch */ color: oklch(31.8% 0.122 271.9);

Tailwind

colors: {
  custom: {
    50: '#666199',
    500: '#1f286f',
    950: '#000000',
  },
}

SCSS

$custom: #1f286f;
$custom-light: #666199;
$custom-dark: #000000;

JSON

{
  "hex": "#1f286f",
  "rgb": {
    "r": 31,
    "g": 40,
    "b": 111
  },
  "hsl": {
    "h": 233.25,
    "s": 56.338,
    "l": 27.843
  },
  "oklch": {
    "l": 0.31792,
    "c": 0.12216,
    "h": 271.9
  },
  "luminance": 0.02957
}

Semantic roles & 50–950 ramp

primary

#1F286F

secondary

#A39947

accent

#CF48E0

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050E

muted

#7A797E

Preview Lab

Preview with #1F286F

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

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