#1B2977#1B2977

#1B2977 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.5% C 0.134 H 269.4°. Best body text is #FFFFFF at 12.88:1 contrast (WCAG AA passes).

Color values

HEX	#1B2977
RGB	rgb(27, 41, 119)
HSL	hsl(231, 63%, 29%)
HSV	hsv(231, 77%, 47%)
CMYK	cmyk(77.3%, 65.5%, 0%, 53.3%)
CIE-LAB	lab(20.64, 23.95, -46.23)
CIE-LCH	lch(20.64, 52.06, 297.39°)
OKLab	oklab(32.52% -0.0013 -0.1336)
OKLCH	oklch(32.52% 0.134 269.4)
XYZ	xyz(4.5736, 3.1503, 17.8162)
Luminance	0.0315 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2977 #77691B

analogous

#1B5777 #1B2977 #3B1B77

triadic

#1B2977 #771B29 #29771B

tetradic

#1B2977 #771B57 #77691B #1B773B

square

#1B2977 #771B57 #77691B #1B773B

split-complementary

#1B2977 #773B1B #57771B

monochromatic

#060919 #101845 #1B2977 #263AA9 #3A51D2

Accessibility & contrast

On white

12.88

#1B2977 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#1B2977 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2977

12.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2977	#FFFFFF	#000000	##FFFFFF
##1B2977	1.00	12.88	1.63	12.88
#FFFFFF	12.88	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00367A

Deuteranopia (green-blind)

#002D76

Tritanopia (blue-blind)

#003D4C

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1b2977;
/* rgb */ color: rgb(27, 41, 119);
/* oklch */ color: oklch(32.5% 0.134 269.4);

Tailwind

colors: {
  custom: {
    50: '#67629f',
    500: '#1b2977',
    950: '#000000',
  },
}

SCSS

$custom: #1b2977;
$custom-light: #67629f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2977",
  "rgb": {
    "r": 27,
    "g": 41,
    "b": 119
  },
  "hsl": {
    "h": 230.87,
    "s": 63.014,
    "l": 28.627
  },
  "oklch": {
    "l": 0.32523,
    "c": 0.13361,
    "h": 269.4
  },
  "luminance": 0.03151
}

Semantic roles & 50–950 ramp

primary

#1B2977

secondary

#AB9B42

accent

#CD42E6

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050F

muted

#7A797E

Preview Lab

Preview with #1B2977

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

Preview Lab → · Contrast checker → · Palette generator →