#1B4871#1B4871

#1B4871 is a dark, moderate cyan. Relative luminance 0.061; OKLCH L 39.2% C 0.085 H 249.1°. Best body text is #FFFFFF at 9.49:1 contrast (WCAG AA passes).

Color values

HEX	#1B4871
RGB	rgb(27, 72, 113)
HSL	hsl(209, 61%, 27%)
HSV	hsv(209, 76%, 44%)
CMYK	cmyk(76.1%, 36.3%, 0%, 55.7%)
CIE-LAB	lab(29.56, -0.12, -28.04)
CIE-LCH	lch(29.56, 28.04, 269.76°)
OKLab	oklab(39.21% -0.0303 -0.0797)
OKLCH	oklch(39.21% 0.085 249.1)
XYZ	xyz(5.7489, 6.0594, 16.4862)
Luminance	0.0606 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4871 #71441B

analogous

#1B716F #1B4871 #1B1D71

triadic

#1B4871 #711B48 #48711B

tetradic

#1B4871 #6F1B71 #71441B #1D711B

square

#1B4871 #6F1B71 #71441B #1D711B

split-complementary

#1B4871 #711B1D #716F1B

monochromatic

#061019 #0F2940 #1B4871 #2767A2 #3787CF

Accessibility & contrast

On white

9.49

#1B4871 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#1B4871 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4871

9.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4871	#FFFFFF	#000000	##FFFFFF
##1B4871	1.00	9.49	2.21	9.49
#FFFFFF	9.49	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#354A73

Deuteranopia (green-blind)

#294270

Tritanopia (blue-blind)

#005257

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1b4871;
/* rgb */ color: rgb(27, 72, 113);
/* oklch */ color: oklch(39.2% 0.085 249.1);

Tailwind

colors: {
  custom: {
    50: '#647a9a',
    500: '#1b4871',
    950: '#000000',
  },
}

SCSS

$custom: #1b4871;
$custom-light: #647a9a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4871",
  "rgb": {
    "r": 27,
    "g": 72,
    "b": 113
  },
  "hsl": {
    "h": 208.605,
    "s": 61.429,
    "l": 27.451
  },
  "oklch": {
    "l": 0.39206,
    "c": 0.08525,
    "h": 249.1
  },
  "luminance": 0.0606
}

Semantic roles & 50–950 ramp

primary

#1B4871

secondary

#A67242

accent

#9043E5

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06090E

muted

#7A7B7E

Preview Lab

Preview with #1B4871

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

Preview Lab → · Contrast checker → · Palette generator →