#1B2B8D#1B2B8D

#1B2B8D is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.1% C 0.161 H 268.6°. Best body text is #FFFFFF at 11.82:1 contrast (WCAG AA passes).

Color values

HEX	#1B2B8D
RGB	rgb(27, 43, 141)
HSL	hsl(232, 68%, 33%)
HSV	hsv(232, 81%, 55%)
CMYK	cmyk(80.9%, 69.5%, 0%, 44.7%)
CIE-LAB	lab(23.28, 31.11, -55.75)
CIE-LCH	lch(23.28, 63.84, 299.16°)
OKLab	oklab(35.11% -0.0039 -0.1614)
OKLCH	oklch(35.11% 0.161 268.6)
XYZ	xyz(6.1219, 3.8832, 25.6210)
Luminance	0.0388 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2B8D #8D7D1B

analogous

#1B648D #1B2B8D #441B8D

triadic

#1B2B8D #8D1B2B #2B8D1B

tetradic

#1B2B8D #8D1B64 #8D7D1B #1B8D44

square

#1B2B8D #8D1B64 #8D7D1B #1B8D44

split-complementary

#1B2B8D #8D441B #648D1B

monochromatic

#070C26 #111B5A #1B2B8D #253BC0 #475CDC

Accessibility & contrast

On white

11.82

#1B2B8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1B2B8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2B8D

11.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2B8D	#FFFFFF	#000000	##FFFFFF
##1B2B8D	1.00	11.82	1.78	11.82
#FFFFFF	11.82	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D90

Deuteranopia (green-blind)

#00328B

Tritanopia (blue-blind)

#004658

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1b2b8d;
/* rgb */ color: rgb(27, 43, 141);
/* oklch */ color: oklch(35.1% 0.161 268.6);

Tailwind

colors: {
  custom: {
    50: '#6d64af',
    500: '#1b2b8d',
    950: '#000000',
  },
}

SCSS

$custom: #1b2b8d;
$custom-light: #6d64af;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2b8d",
  "rgb": {
    "r": 27,
    "g": 43,
    "b": 141
  },
  "hsl": {
    "h": 231.579,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.35111,
    "c": 0.16148,
    "h": 268.6
  },
  "luminance": 0.03884
}

Semantic roles & 50–950 ramp

primary

#1B2B8D

secondary

#BDAD46

accent

#D23DEB

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080511

muted

#7B7A80

Preview Lab

Preview with #1B2B8D

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

Preview Lab → · Contrast checker → · Palette generator →