#1B2D71#1B2D71

#1B2D71 is a dark, moderate blue. Relative luminance 0.033; OKLCH L 32.8% C 0.120 H 267.9°. Best body text is #FFFFFF at 12.65:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D71
RGB	rgb(27, 45, 113)
HSL	hsl(227, 61%, 27%)
HSV	hsv(227, 76%, 44%)
CMYK	cmyk(76.1%, 60.2%, 0%, 55.7%)
CIE-LAB	lab(21.21, 18.72, -41.44)
CIE-LCH	lch(21.21, 45.47, 294.31°)
OKLab	oklab(32.79% -0.0044 -0.1195)
OKLCH	oklch(32.79% 0.12 267.9)
XYZ	xyz(4.3700, 3.3016, 16.0265)
Luminance	0.0330 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D71 #715F1B

analogous

#1B5871 #1B2D71 #341B71

triadic

#1B2D71 #711B2D #2D711B

tetradic

#1B2D71 #711B58 #715F1B #1B7134

square

#1B2D71 #711B58 #715F1B #1B7134

split-complementary

#1B2D71 #71341B #58711B

monochromatic

#060A19 #0F1940 #1B2D71 #2741A2 #3757CF

Accessibility & contrast

On white

12.65

#1B2D71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1B2D71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D71

12.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D71	#FFFFFF	#000000	##FFFFFF
##1B2D71	1.00	12.65	1.66	12.65
#FFFFFF	12.65	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003773

Deuteranopia (green-blind)

#002F70

Tritanopia (blue-blind)

#003E4A

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1b2d71;
/* rgb */ color: rgb(27, 45, 113);
/* oklch */ color: oklch(32.8% 0.120 267.9);

Tailwind

colors: {
  custom: {
    50: '#65659a',
    500: '#1b2d71',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d71;
$custom-light: #65659a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d71",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 113
  },
  "hsl": {
    "h": 227.442,
    "s": 61.429,
    "l": 27.451
  },
  "oklch": {
    "l": 0.32786,
    "c": 0.11958,
    "h": 267.9
  },
  "luminance": 0.03302
}

Semantic roles & 50–950 ramp

primary

#1B2D71

secondary

#A69142

accent

#C343E5

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06050E

muted

#7A7A7E

Preview Lab

Preview with #1B2D71

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

Preview Lab → · Contrast checker → · Palette generator →