#1B4D75#1B4D75

#1B4D75 is a dark, moderate cyan. Relative luminance 0.068; OKLCH L 40.7% C 0.086 H 246.4°. Best body text is #FFFFFF at 8.88:1 contrast (WCAG AA passes).

Color values

HEX	#1B4D75
RGB	rgb(27, 77, 117)
HSL	hsl(207, 63%, 28%)
HSV	hsv(207, 77%, 46%)
CMYK	cmyk(76.9%, 34.2%, 0%, 54.1%)
CIE-LAB	lab(31.40, -1.81, -27.65)
CIE-LCH	lch(31.40, 27.71, 266.25°)
OKLab	oklab(40.73% -0.0343 -0.0784)
OKLCH	oklch(40.73% 0.086 246.4)
XYZ	xyz(6.3155, 6.8244, 17.8106)
Luminance	0.0683 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4D75 #75431B

analogous

#1B7570 #1B4D75 #1B2075

triadic

#1B4D75 #751B4D #4D751B

tetradic

#1B4D75 #701B75 #75431B #20751B

square

#1B4D75 #701B75 #75431B #20751B

split-complementary

#1B4D75 #751B20 #75701B

monochromatic

#061019 #102C43 #1B4D75 #266EA7 #398ED1

Accessibility & contrast

On white

8.88

#1B4D75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#1B4D75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4D75

8.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4D75	#FFFFFF	#000000	##FFFFFF
##1B4D75	1.00	8.88	2.37	8.88
#FFFFFF	8.88	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B4F77

Deuteranopia (green-blind)

#2E4674

Tritanopia (blue-blind)

#00575B

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1b4d75;
/* rgb */ color: rgb(27, 77, 117);
/* oklch */ color: oklch(40.7% 0.086 246.4);

Tailwind

colors: {
  custom: {
    50: '#657e9d',
    500: '#1b4d75',
    950: '#000000',
  },
}

SCSS

$custom: #1b4d75;
$custom-light: #657e9d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4d75",
  "rgb": {
    "r": 27,
    "g": 77,
    "b": 117
  },
  "hsl": {
    "h": 206.667,
    "s": 62.5,
    "l": 28.235
  },
  "oklch": {
    "l": 0.40728,
    "c": 0.08562,
    "h": 246.4
  },
  "luminance": 0.06825
}

Semantic roles & 50–950 ramp

primary

#1B4D75

secondary

#A97042

accent

#8B42E6

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#06090E

muted

#7A7B7E

Preview Lab

Preview with #1B4D75

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

Preview Lab → · Contrast checker → · Palette generator →