#1B2976#1B2976

#1B2976 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.4% C 0.132 H 269.4°. Best body text is #FFFFFF at 12.92:1 contrast (WCAG AA passes).

Color values

HEX	#1B2976
RGB	rgb(27, 41, 118)
HSL	hsl(231, 63%, 28%)
HSV	hsv(231, 77%, 46%)
CMYK	cmyk(77.1%, 65.3%, 0%, 53.7%)
CIE-LAB	lab(20.54, 23.55, -45.74)
CIE-LCH	lch(20.54, 51.45, 297.25°)
OKLab	oklab(32.43% -0.0013 -0.1322)
OKLCH	oklch(32.43% 0.132 269.4)
XYZ	xyz(4.5138, 3.1264, 17.5016)
Luminance	0.0313 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2976 #76681B

analogous

#1B5676 #1B2976 #3A1B76

triadic

#1B2976 #761B29 #29761B

tetradic

#1B2976 #761B56 #76681B #1B763A

square

#1B2976 #761B56 #76681B #1B763A

split-complementary

#1B2976 #763A1B #56761B

monochromatic

#060919 #101844 #1B2976 #263AA8 #3A51D2

Accessibility & contrast

On white

12.92

#1B2976 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#1B2976 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2976

12.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2976	#FFFFFF	#000000	##FFFFFF
##1B2976	1.00	12.92	1.63	12.92
#FFFFFF	12.92	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003678

Deuteranopia (green-blind)

#002D75

Tritanopia (blue-blind)

#003D4B

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1b2976;
/* rgb */ color: rgb(27, 41, 118);
/* oklch */ color: oklch(32.4% 0.132 269.4);

Tailwind

colors: {
  custom: {
    50: '#67629e',
    500: '#1b2976',
    950: '#000000',
  },
}

SCSS

$custom: #1b2976;
$custom-light: #67629e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2976",
  "rgb": {
    "r": 27,
    "g": 41,
    "b": 118
  },
  "hsl": {
    "h": 230.769,
    "s": 62.759,
    "l": 28.431
  },
  "oklch": {
    "l": 0.32426,
    "c": 0.13218,
    "h": 269.4
  },
  "luminance": 0.03127
}

Semantic roles & 50–950 ramp

primary

#1B2976

secondary

#AA9A42

accent

#CD42E6

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050E

muted

#7A797E

Preview Lab

Preview with #1B2976

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

Preview Lab → · Contrast checker → · Palette generator →