#1F2B88#1F2B88

#1F2B88 is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.8% C 0.154 H 270.2°. Best body text is #FFFFFF at 11.94:1 contrast (WCAG AA passes).

Color values

HEX	#1F2B88
RGB	rgb(31, 43, 136)
HSL	hsl(233, 63%, 33%)
HSV	hsv(233, 77%, 53%)
CMYK	cmyk(77.2%, 68.4%, 0%, 46.7%)
CIE-LAB	lab(22.99, 29.61, -53.11)
CIE-LCH	lch(22.99, 60.81, 299.14°)
OKLab	oklab(34.8% 0.0005 -0.1536)
OKLCH	oklch(34.8% 0.154 270.2)
XYZ	xyz(5.8714, 3.7960, 23.7110)
Luminance	0.0380 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2B88 #887C1F

analogous

#1F5F88 #1F2B88 #481F88

triadic

#1F2B88 #881F2B #2B881F

tetradic

#1F2B88 #881F5F #887C1F #1F8848

square

#1F2B88 #881F5F #887C1F #1F8848

split-complementary

#1F2B88 #88481F #5F881F

monochromatic

#080B24 #141B56 #1F2B88 #2A3BBA #4B5BD6

Accessibility & contrast

On white

11.94

#1F2B88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1F2B88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2B88

11.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2B88	#FFFFFF	#000000	##FFFFFF
##1F2B88	1.00	11.94	1.76	11.94
#FFFFFF	11.94	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C8B

Deuteranopia (green-blind)

#003286

Tritanopia (blue-blind)

#004455

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1f2b88;
/* rgb */ color: rgb(31, 43, 136);
/* oklch */ color: oklch(34.8% 0.154 270.2);

Tailwind

colors: {
  custom: {
    50: '#6d64ac',
    500: '#1f2b88',
    950: '#000000',
  },
}

SCSS

$custom: #1f2b88;
$custom-light: #6d64ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2b88",
  "rgb": {
    "r": 31,
    "g": 43,
    "b": 136
  },
  "hsl": {
    "h": 233.143,
    "s": 62.874,
    "l": 32.745
  },
  "oklch": {
    "l": 0.348,
    "c": 0.15365,
    "h": 270.2
  },
  "luminance": 0.03797
}

Semantic roles & 50–950 ramp

primary

#1F2B88

secondary

#B9AC4A

accent

#D342E6

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080510

muted

#7B7A7F

Preview Lab

Preview with #1F2B88

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

Preview Lab → · Contrast checker → · Palette generator →