#1F2888#1F2888

#1F2888 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.3% C 0.157 H 270.8°. Best body text is #FFFFFF at 12.23:1 contrast (WCAG AA passes).

Color values

HEX	#1F2888
RGB	rgb(31, 40, 136)
HSL	hsl(235, 63%, 33%)
HSV	hsv(235, 77%, 53%)
CMYK	cmyk(77.2%, 70.6%, 0%, 46.7%)
CIE-LAB	lab(22.25, 31.59, -54.32)
CIE-LCH	lch(22.25, 62.83, 300.18°)
OKLab	oklab(34.27% 0.0023 -0.1572)
OKLCH	oklch(34.27% 0.157 270.8)
XYZ	xyz(5.7663, 3.5858, 23.6760)
Luminance	0.0359 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2888 #887F1F

analogous

#1F5C88 #1F2888 #4A1F88

triadic

#1F2888 #881F28 #28881F

tetradic

#1F2888 #881F5C #887F1F #1F884A

square

#1F2888 #881F5C #887F1F #1F884A

split-complementary

#1F2888 #884A1F #5C881F

monochromatic

#080B24 #141956 #1F2888 #2A37BA #4B57D6

Accessibility & contrast

On white

12.23

#1F2888 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#1F2888 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2888

12.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2888	#FFFFFF	#000000	##FFFFFF
##1F2888	1.00	12.23	1.72	12.23
#FFFFFF	12.23	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A8B

Deuteranopia (green-blind)

#003086

Tritanopia (blue-blind)

#004254

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1f2888;
/* rgb */ color: rgb(31, 40, 136);
/* oklch */ color: oklch(34.3% 0.157 270.8);

Tailwind

colors: {
  custom: {
    50: '#6d62ac',
    500: '#1f2888',
    950: '#000000',
  },
}

SCSS

$custom: #1f2888;
$custom-light: #6d62ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2888",
  "rgb": {
    "r": 31,
    "g": 40,
    "b": 136
  },
  "hsl": {
    "h": 234.857,
    "s": 62.874,
    "l": 32.745
  },
  "oklch": {
    "l": 0.34267,
    "c": 0.1572,
    "h": 270.8
  },
  "luminance": 0.03586
}

Semantic roles & 50–950 ramp

primary

#1F2888

secondary

#B9AF4A

accent

#D842E6

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1F2888

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

Preview Lab → · Contrast checker → · Palette generator →