#1B4E7D#1B4E7D

#1B4E7D is a dark, moderate cyan. Relative luminance 0.072; OKLCH L 41.5% C 0.095 H 249.8°. Best body text is #FFFFFF at 8.63:1 contrast (WCAG AA passes).

Color values

HEX	#1B4E7D
RGB	rgb(27, 78, 125)
HSL	hsl(209, 64%, 30%)
HSV	hsv(209, 78%, 49%)
CMYK	cmyk(78.4%, 37.6%, 0%, 51%)
CIE-LAB	lab(32.17, 0.71, -31.42)
CIE-LCH	lch(32.17, 31.43, 271.29°)
OKLab	oklab(41.48% -0.0329 -0.0894)
OKLCH	oklch(41.48% 0.095 249.8)
XYZ	xyz(6.8767, 7.1617, 20.4180)
Luminance	0.0716 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4E7D #7D4A1B

analogous

#1B7D7B #1B4E7D #1B1D7D

triadic

#1B4E7D #7D1B4E #4E7D1B

tetradic

#1B4E7D #7B1B7D #7D4A1B #1D7D1B

square

#1B4E7D #7B1B7D #7D4A1B #1D7D1B

split-complementary

#1B4E7D #7D1B1D #7D7B1B

monochromatic

#051019 #102F4B #1B4E7D #266DAF #3D8CD5

Accessibility & contrast

On white

8.63

#1B4E7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#1B4E7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4E7D

8.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4E7D	#FFFFFF	#000000	##FFFFFF
##1B4E7D	1.00	8.63	2.43	8.63
#FFFFFF	8.63	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#38517F

Deuteranopia (green-blind)

#2A487C

Tritanopia (blue-blind)

#00595F

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1b4e7d;
/* rgb */ color: rgb(27, 78, 125);
/* oklch */ color: oklch(41.5% 0.095 249.8);

Tailwind

colors: {
  custom: {
    50: '#677fa3',
    500: '#1b4e7d',
    950: '#000000',
  },
}

SCSS

$custom: #1b4e7d;
$custom-light: #677fa3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4e7d",
  "rgb": {
    "r": 27,
    "g": 78,
    "b": 125
  },
  "hsl": {
    "h": 208.776,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.41478,
    "c": 0.09532,
    "h": 249.8
  },
  "luminance": 0.07162
}

Semantic roles & 50–950 ramp

primary

#1B4E7D

secondary

#B17843

accent

#9040E7

background

#F6F7FA

surface

#EBEEF3

border

#C6C9CD

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1B4E7D

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

Preview Lab → · Contrast checker → · Palette generator →