#1B2897#1B2897

#1B2897 is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.7% C 0.178 H 268.8°. Best body text is #FFFFFF at 11.69:1 contrast (WCAG AA passes).

Color values

HEX	#1B2897
RGB	rgb(27, 40, 151)
HSL	hsl(234, 70%, 35%)
HSV	hsv(234, 82%, 59%)
CMYK	cmyk(82.1%, 73.5%, 0%, 40.8%)
CIE-LAB	lab(23.62, 36.74, -61.37)
CIE-LCH	lch(23.62, 71.53, 300.91°)
OKLab	oklab(35.67% -0.0036 -0.1778)
OKLCH	oklch(35.67% 0.178 268.8)
XYZ	xyz(6.7948, 3.9842, 29.6831)
Luminance	0.0398 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2897 #978A1B

analogous

#1B6697 #1B2897 #4C1B97

triadic

#1B2897 #971B28 #28971B

tetradic

#1B2897 #971B66 #978A1B #1B974C

square

#1B2897 #971B66 #978A1B #1B974C

split-complementary

#1B2897 #974C1B #66971B

monochromatic

#080C2F #121A63 #1B2897 #2436CB #4D5DDF

Accessibility & contrast

On white

11.69

#1B2897 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1B2897 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2897

11.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2897	#FFFFFF	#000000	##FFFFFF
##1B2897	1.00	11.69	1.80	11.69
#FFFFFF	11.69	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E9A

Deuteranopia (green-blind)

#003295

Tritanopia (blue-blind)

#00485D

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1b2897;
/* rgb */ color: rgb(27, 40, 151);
/* oklch */ color: oklch(35.7% 0.178 268.8);

Tailwind

colors: {
  custom: {
    50: '#7063b7',
    500: '#1b2897',
    950: '#000000',
  },
}

SCSS

$custom: #1b2897;
$custom-light: #7063b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2897",
  "rgb": {
    "r": 27,
    "g": 40,
    "b": 151
  },
  "hsl": {
    "h": 233.71,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.35668,
    "c": 0.17786,
    "h": 268.8
  },
  "luminance": 0.03985
}

Semantic roles & 50–950 ramp

primary

#1B2897

secondary

#C1B54C

accent

#DA3BEC

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #1B2897

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

Preview Lab → · Contrast checker → · Palette generator →