#1B2785#1B2785

#1B2785 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.6% C 0.155 H 269.6°. Best body text is #FFFFFF at 12.53:1 contrast (WCAG AA passes).

Color values

HEX	#1B2785
RGB	rgb(27, 39, 133)
HSL	hsl(233, 66%, 31%)
HSV	hsv(233, 80%, 52%)
CMYK	cmyk(79.7%, 70.7%, 0%, 47.8%)
CIE-LAB	lab(21.49, 30.72, -53.69)
CIE-LCH	lch(21.49, 61.85, 299.78°)
OKLab	oklab(33.57% -0.0011 -0.1554)
OKLCH	oklch(33.57% 0.155 269.6)
XYZ	xyz(5.4097, 3.3769, 22.5525)
Luminance	0.0338 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2785 #85791B

analogous

#1B5C85 #1B2785 #441B85

triadic

#1B2785 #851B27 #27851B

tetradic

#1B2785 #851B5C #85791B #1B8544

square

#1B2785 #851B5C #85791B #1B8544

split-complementary

#1B2785 #85441B #5C851B

monochromatic

#06091F #111852 #1B2785 #2536B8 #4253D9

Accessibility & contrast

On white

12.53

#1B2785 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1B2785 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2785

12.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2785	#FFFFFF	#000000	##FFFFFF
##1B2785	1.00	12.53	1.68	12.53
#FFFFFF	12.53	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003988

Deuteranopia (green-blind)

#002E83

Tritanopia (blue-blind)

#004152

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b2785;
/* rgb */ color: rgb(27, 39, 133);
/* oklch */ color: oklch(33.6% 0.155 269.6);

Tailwind

colors: {
  custom: {
    50: '#6b61a9',
    500: '#1b2785',
    950: '#000000',
  },
}

SCSS

$custom: #1b2785;
$custom-light: #6b61a9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2785",
  "rgb": {
    "r": 27,
    "g": 39,
    "b": 133
  },
  "hsl": {
    "h": 233.208,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.33569,
    "c": 0.15544,
    "h": 269.6
  },
  "luminance": 0.03378
}

Semantic roles & 50–950 ramp

primary

#1B2785

secondary

#B8AB44

accent

#D63FE9

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#080510

muted

#7A797F

Preview Lab

Preview with #1B2785

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

Preview Lab → · Contrast checker → · Palette generator →