#1B2890#1B2890

#1B2890 is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.9% C 0.169 H 269.1°. Best body text is #FFFFFF at 11.98:1 contrast (WCAG AA passes).

Color values

HEX	#1B2890
RGB	rgb(27, 40, 144)
HSL	hsl(233, 68%, 34%)
HSV	hsv(233, 81%, 56%)
CMYK	cmyk(81.3%, 72.2%, 0%, 43.5%)
CIE-LAB	lab(22.87, 34.18, -58.28)
CIE-LCH	lch(22.87, 67.56, 300.39°)
OKLab	oklab(34.91% -0.0027 -0.1688)
OKLCH	oklch(34.91% 0.169 269.1)
XYZ	xyz(6.2431, 3.7635, 26.7775)
Luminance	0.0376 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2890 #90831B

analogous

#1B6290 #1B2890 #481B90

triadic

#1B2890 #901B28 #28901B

tetradic

#1B2890 #901B62 #90831B #1B9048

square

#1B2890 #901B62 #90831B #1B9048

split-complementary

#1B2890 #90481B #62901B

monochromatic

#080B29 #111A5C #1B2890 #2536C4 #4959DD

Accessibility & contrast

On white

11.98

#1B2890 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#1B2890 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2890

11.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2890	#FFFFFF	#000000	##FFFFFF
##1B2890	1.00	11.98	1.75	11.98
#FFFFFF	11.98	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C93

Deuteranopia (green-blind)

#00318E

Tritanopia (blue-blind)

#004559

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1b2890;
/* rgb */ color: rgb(27, 40, 144);
/* oklch */ color: oklch(34.9% 0.169 269.1);

Tailwind

colors: {
  custom: {
    50: '#6e62b2',
    500: '#1b2890',
    950: '#000000',
  },
}

SCSS

$custom: #1b2890;
$custom-light: #6e62b2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2890",
  "rgb": {
    "r": 27,
    "g": 40,
    "b": 144
  },
  "hsl": {
    "h": 233.333,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.34909,
    "c": 0.16884,
    "h": 269.1
  },
  "luminance": 0.03764
}

Semantic roles & 50–950 ramp

primary

#1B2890

secondary

#BFB148

accent

#D83DEB

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#080511

muted

#7B7980

Preview Lab

Preview with #1B2890

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

Preview Lab → · Contrast checker → · Palette generator →