#1B2B85#1B2B85

#1B2B85 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.3% C 0.151 H 268.7°. Best body text is #FFFFFF at 12.13:1 contrast (WCAG AA passes).

Color values

HEX	#1B2B85
RGB	rgb(27, 43, 133)
HSL	hsl(231, 66%, 31%)
HSV	hsv(231, 80%, 52%)
CMYK	cmyk(79.7%, 67.7%, 0%, 47.8%)
CIE-LAB	lab(22.49, 28.04, -52.05)
CIE-LCH	lch(22.49, 59.12, 298.32°)
OKLab	oklab(34.29% -0.0033 -0.1506)
OKLCH	oklch(34.29% 0.151 268.7)
XYZ	xyz(5.5480, 3.6536, 22.5986)
Luminance	0.0365 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2B85 #85751B

analogous

#1B6085 #1B2B85 #401B85

triadic

#1B2B85 #851B2B #2B851B

tetradic

#1B2B85 #851B60 #85751B #1B8540

square

#1B2B85 #851B60 #85751B #1B8540

split-complementary

#1B2B85 #85401B #60851B

monochromatic

#060A1F #111B52 #1B2B85 #253BB8 #4259D9

Accessibility & contrast

On white

12.13

#1B2B85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1B2B85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2B85

12.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2B85	#FFFFFF	#000000	##FFFFFF
##1B2B85	1.00	12.13	1.73	12.13
#FFFFFF	12.13	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B88

Deuteranopia (green-blind)

#003183

Tritanopia (blue-blind)

#004354

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1b2b85;
/* rgb */ color: rgb(27, 43, 133);
/* oklch */ color: oklch(34.3% 0.151 268.7);

Tailwind

colors: {
  custom: {
    50: '#6a64a9',
    500: '#1b2b85',
    950: '#000000',
  },
}

SCSS

$custom: #1b2b85;
$custom-light: #6a64a9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2b85",
  "rgb": {
    "r": 27,
    "g": 43,
    "b": 133
  },
  "hsl": {
    "h": 230.943,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.34295,
    "c": 0.15067,
    "h": 268.7
  },
  "luminance": 0.03654
}

Semantic roles & 50–950 ramp

primary

#1B2B85

secondary

#B8A744

accent

#CF3FE9

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080510

muted

#7A7A7F

Preview Lab

Preview with #1B2B85

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

Preview Lab → · Contrast checker → · Palette generator →