#1B2585#1B2585

#1B2585 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.2% C 0.158 H 270.0°. Best body text is #FFFFFF at 12.73:1 contrast (WCAG AA passes).

Color values

HEX	#1B2585
RGB	rgb(27, 37, 133)
HSL	hsl(234, 66%, 31%)
HSV	hsv(234, 80%, 52%)
CMYK	cmyk(79.7%, 72.2%, 0%, 47.8%)
CIE-LAB	lab(21.01, 32.02, -54.48)
CIE-LCH	lch(21.01, 63.19, 300.45°)
OKLab	oklab(33.22% 0 -0.1577)
OKLCH	oklch(33.22% 0.158 270)
XYZ	xyz(5.3458, 3.2490, 22.5311)
Luminance	0.0325 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2585 #857B1B

analogous

#1B5A85 #1B2585 #461B85

triadic

#1B2585 #851B25 #25851B

tetradic

#1B2585 #851B5A #857B1B #1B8546

square

#1B2585 #851B5A #857B1B #1B8546

split-complementary

#1B2585 #85461B #5A851B

monochromatic

#06091F #111752 #1B2585 #2533B8 #4250D9

Accessibility & contrast

On white

12.73

#1B2585 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#1B2585 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2585

12.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2585	#FFFFFF	#000000	##FFFFFF
##1B2585	1.00	12.73	1.65	12.73
#FFFFFF	12.73	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003888

Deuteranopia (green-blind)

#002D83

Tritanopia (blue-blind)

#004052

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1b2585;
/* rgb */ color: rgb(27, 37, 133);
/* oklch */ color: oklch(33.2% 0.158 270.0);

Tailwind

colors: {
  custom: {
    50: '#6b60aa',
    500: '#1b2585',
    950: '#000000',
  },
}

SCSS

$custom: #1b2585;
$custom-light: #6b60aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2585",
  "rgb": {
    "r": 27,
    "g": 37,
    "b": 133
  },
  "hsl": {
    "h": 234.34,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.33222,
    "c": 0.15774,
    "h": 270
  },
  "luminance": 0.0325
}

Semantic roles & 50–950 ramp

primary

#1B2585

secondary

#B8AD44

accent

#D93FE9

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1B2585

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

Preview Lab → · Contrast checker → · Palette generator →