#1F2F88#1F2F88

#1F2F88 is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.5% C 0.149 H 269.2°. Best body text is #FFFFFF at 11.54:1 contrast (WCAG AA passes).

Color values

HEX	#1F2F88
RGB	rgb(31, 47, 136)
HSL	hsl(231, 63%, 33%)
HSV	hsv(231, 77%, 53%)
CMYK	cmyk(77.2%, 65.4%, 0%, 46.7%)
CIE-LAB	lab(24.00, 26.92, -51.44)
CIE-LCH	lch(24.00, 58.06, 297.63°)
OKLab	oklab(35.55% -0.002 -0.1487)
OKLCH	oklch(35.55% 0.149 269.2)
XYZ	xyz(6.0240, 4.1013, 23.7619)
Luminance	0.0410 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2F88 #88781F

analogous

#1F6388 #1F2F88 #431F88

triadic

#1F2F88 #881F2F #2F881F

tetradic

#1F2F88 #881F63 #88781F #1F8843

square

#1F2F88 #881F63 #88781F #1F8843

split-complementary

#1F2F88 #88431F #63881F

monochromatic

#080D24 #141E56 #1F2F88 #2A40BA #4B60D6

Accessibility & contrast

On white

11.54

#1F2F88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#1F2F88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2F88

11.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2F88	#FFFFFF	#000000	##FFFFFF
##1F2F88	1.00	11.54	1.82	11.54
#FFFFFF	11.54	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8B

Deuteranopia (green-blind)

#003486

Tritanopia (blue-blind)

#004657

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1f2f88;
/* rgb */ color: rgb(31, 47, 136);
/* oklch */ color: oklch(35.5% 0.149 269.2);

Tailwind

colors: {
  custom: {
    50: '#6c67ac',
    500: '#1f2f88',
    950: '#000000',
  },
}

SCSS

$custom: #1f2f88;
$custom-light: #6c67ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2f88",
  "rgb": {
    "r": 31,
    "g": 47,
    "b": 136
  },
  "hsl": {
    "h": 230.857,
    "s": 62.874,
    "l": 32.745
  },
  "oklch": {
    "l": 0.35546,
    "c": 0.14874,
    "h": 269.2
  },
  "luminance": 0.04102
}

Semantic roles & 50–950 ramp

primary

#1F2F88

secondary

#B9A84A

accent

#CD42E6

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1F2F88

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

Preview Lab → · Contrast checker → · Palette generator →