#1B4B76#1B4B76

#1B4B76 is a dark, moderate cyan. Relative luminance 0.066; OKLCH L 40.3% C 0.089 H 248.9°. Best body text is #FFFFFF at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#1B4B76
RGB	rgb(27, 75, 118)
HSL	hsl(208, 63%, 28%)
HSV	hsv(208, 77%, 46%)
CMYK	cmyk(77.1%, 36.4%, 0%, 53.7%)
CIE-LAB	lab(30.81, -0.11, -29.21)
CIE-LCH	lch(30.81, 29.21, 269.79°)
OKLab	oklab(40.28% -0.032 -0.083)
OKLCH	oklch(40.28% 0.089 248.9)
XYZ	xyz(6.2368, 6.5725, 18.0759)
Luminance	0.0657 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4B76 #76461B

analogous

#1B7673 #1B4B76 #1B1D76

triadic

#1B4B76 #761B4B #4B761B

tetradic

#1B4B76 #731B76 #76461B #1D761B

square

#1B4B76 #731B76 #76461B #1D761B

split-complementary

#1B4B76 #761B1D #76731B

monochromatic

#061019 #102B44 #1B4B76 #266BA8 #3A8AD2

Accessibility & contrast

On white

9.07

#1B4B76 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#1B4B76 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4B76

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4B76	#FFFFFF	#000000	##FFFFFF
##1B4B76	1.00	9.07	2.31	9.07
#FFFFFF	9.07	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#374D78

Deuteranopia (green-blind)

#2A4575

Tritanopia (blue-blind)

#00555B

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1b4b76;
/* rgb */ color: rgb(27, 75, 118);
/* oklch */ color: oklch(40.3% 0.089 248.9);

Tailwind

colors: {
  custom: {
    50: '#657d9e',
    500: '#1b4b76',
    950: '#000000',
  },
}

SCSS

$custom: #1b4b76;
$custom-light: #657d9e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4b76",
  "rgb": {
    "r": 27,
    "g": 75,
    "b": 118
  },
  "hsl": {
    "h": 208.352,
    "s": 62.759,
    "l": 28.431
  },
  "oklch": {
    "l": 0.40281,
    "c": 0.08896,
    "h": 248.9
  },
  "luminance": 0.06573
}

Semantic roles & 50–950 ramp

primary

#1B4B76

secondary

#AA7442

accent

#8F42E6

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#06090E

muted

#7A7B7E

Preview Lab

Preview with #1B4B76

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

Preview Lab → · Contrast checker → · Palette generator →