#1B4777#1B4777

#1B4777 is a dark, moderate cyan. Relative luminance 0.061; OKLCH L 39.3% C 0.095 H 253.0°. Best body text is #FFFFFF at 9.48:1 contrast (WCAG AA passes).

Color values

HEX	#1B4777
RGB	rgb(27, 71, 119)
HSL	hsl(211, 63%, 29%)
HSV	hsv(211, 77%, 47%)
CMYK	cmyk(77.3%, 40.3%, 0%, 53.3%)
CIE-LAB	lab(29.59, 2.95, -31.77)
CIE-LCH	lch(29.59, 31.91, 275.30°)
OKLab	oklab(39.34% -0.0276 -0.0906)
OKLCH	oklch(39.34% 0.095 253)
XYZ	xyz(6.0338, 6.0707, 18.3030)
Luminance	0.0607 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4777 #774B1B

analogous

#1B7577 #1B4777 #1D1B77

triadic

#1B4777 #771B47 #47771B

tetradic

#1B4777 #771B75 #774B1B #1B771D

square

#1B4777 #771B75 #774B1B #1B771D

split-complementary

#1B4777 #771D1B #75771B

monochromatic

#060F19 #102945 #1B4777 #2665A9 #3A83D2

Accessibility & contrast

On white

9.48

#1B4777 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#1B4777 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4777

9.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4777	#FFFFFF	#000000	##FFFFFF
##1B4777	1.00	9.48	2.21	9.48
#FFFFFF	9.48	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#314A79

Deuteranopia (green-blind)

#224276

Tritanopia (blue-blind)

#005259

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1b4777;
/* rgb */ color: rgb(27, 71, 119);
/* oklch */ color: oklch(39.3% 0.095 253.0);

Tailwind

colors: {
  custom: {
    50: '#65799e',
    500: '#1b4777',
    950: '#000000',
  },
}

SCSS

$custom: #1b4777;
$custom-light: #65799e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4777",
  "rgb": {
    "r": 27,
    "g": 71,
    "b": 119
  },
  "hsl": {
    "h": 211.304,
    "s": 63.014,
    "l": 28.627
  },
  "oklch": {
    "l": 0.39342,
    "c": 0.09472,
    "h": 253
  },
  "luminance": 0.06071
}

Semantic roles & 50–950 ramp

primary

#1B4777

secondary

#AB7942

accent

#9742E6

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06090E

muted

#7A7B7E

Preview Lab

Preview with #1B4777

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

Preview Lab → · Contrast checker → · Palette generator →