#1B2888#1B2888

#1B2888 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.1% C 0.158 H 269.3°. Best body text is #FFFFFF at 12.31:1 contrast (WCAG AA passes).

Color values

HEX	#1B2888
RGB	rgb(27, 40, 136)
HSL	hsl(233, 67%, 32%)
HSV	hsv(233, 80%, 53%)
CMYK	cmyk(80.1%, 70.6%, 0%, 46.7%)
CIE-LAB	lab(22.04, 31.19, -54.67)
CIE-LCH	lch(22.04, 62.94, 299.71°)
OKLab	oklab(34.06% -0.0019 -0.1583)
OKLCH	oklch(34.06% 0.158 269.3)
XYZ	xyz(5.6532, 3.5275, 23.6707)
Luminance	0.0353 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2888 #887B1B

analogous

#1B5F88 #1B2888 #451B88

triadic

#1B2888 #881B28 #28881B

tetradic

#1B2888 #881B5F #887B1B #1B8845

square

#1B2888 #881B5F #887B1B #1B8845

split-complementary

#1B2888 #88451B #5F881B

monochromatic

#070A22 #111955 #1B2888 #2537BB #4456DA

Accessibility & contrast

On white

12.31

#1B2888 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1B2888 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2888

12.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2888	#FFFFFF	#000000	##FFFFFF
##1B2888	1.00	12.31	1.71	12.31
#FFFFFF	12.31	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A8B

Deuteranopia (green-blind)

#003086

Tritanopia (blue-blind)

#004254

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1b2888;
/* rgb */ color: rgb(27, 40, 136);
/* oklch */ color: oklch(34.1% 0.158 269.3);

Tailwind

colors: {
  custom: {
    50: '#6c62ac',
    500: '#1b2888',
    950: '#000000',
  },
}

SCSS

$custom: #1b2888;
$custom-light: #6c62ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2888",
  "rgb": {
    "r": 27,
    "g": 40,
    "b": 136
  },
  "hsl": {
    "h": 232.844,
    "s": 66.871,
    "l": 31.961
  },
  "oklch": {
    "l": 0.3406,
    "c": 0.1583,
    "h": 269.3
  },
  "luminance": 0.03528
}

Semantic roles & 50–950 ramp

primary

#1B2888

secondary

#BBAD44

accent

#D53EEA

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1B2888

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

Preview Lab → · Contrast checker → · Palette generator →