#1B2797#1B2797

#1B2797 is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.5% C 0.179 H 269.0°. Best body text is #FFFFFF at 11.77:1 contrast (WCAG AA passes).

Color values

HEX	#1B2797
RGB	rgb(27, 39, 151)
HSL	hsl(234, 70%, 35%)
HSV	hsv(234, 82%, 59%)
CMYK	cmyk(82.1%, 74.2%, 0%, 40.8%)
CIE-LAB	lab(23.40, 37.36, -61.74)
CIE-LCH	lch(23.40, 72.16, 301.18°)
OKLab	oklab(35.51% -0.0032 -0.1789)
OKLCH	oklch(35.51% 0.179 269)
XYZ	xyz(6.7615, 3.9176, 29.6720)
Luminance	0.0392 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2797 #978B1B

analogous

#1B6597 #1B2797 #4D1B97

triadic

#1B2797 #971B27 #27971B

tetradic

#1B2797 #971B65 #978B1B #1B974D

square

#1B2797 #971B65 #978B1B #1B974D

split-complementary

#1B2797 #974D1B #65971B

monochromatic

#080C2F #121A63 #1B2797 #2434CB #4D5BDF

Accessibility & contrast

On white

11.77

#1B2797 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1B2797 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2797

11.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2797	#FFFFFF	#000000	##FFFFFF
##1B2797	1.00	11.77	1.78	11.77
#FFFFFF	11.77	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E9A

Deuteranopia (green-blind)

#003295

Tritanopia (blue-blind)

#00475C

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1b2797;
/* rgb */ color: rgb(27, 39, 151);
/* oklch */ color: oklch(35.5% 0.179 269.0);

Tailwind

colors: {
  custom: {
    50: '#7062b7',
    500: '#1b2797',
    950: '#000000',
  },
}

SCSS

$custom: #1b2797;
$custom-light: #7062b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2797",
  "rgb": {
    "r": 27,
    "g": 39,
    "b": 151
  },
  "hsl": {
    "h": 234.194,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.35509,
    "c": 0.17891,
    "h": 269
  },
  "luminance": 0.03918
}

Semantic roles & 50–950 ramp

primary

#1B2797

secondary

#C1B64C

accent

#DB3BEC

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #1B2797

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

Preview Lab → · Contrast checker → · Palette generator →