#1B4E75#1B4E75

#1B4E75 is a dark, moderate cyan. Relative luminance 0.070; OKLCH L 41.0% C 0.085 H 245.3°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#1B4E75
RGB	rgb(27, 78, 117)
HSL	hsl(206, 63%, 28%)
HSV	hsv(206, 77%, 46%)
CMYK	cmyk(76.9%, 33.3%, 0%, 54.1%)
CIE-LAB	lab(31.73, -2.46, -27.14)
CIE-LCH	lch(31.73, 27.25, 264.83°)
OKLab	oklab(40.98% -0.0354 -0.0769)
OKLCH	oklch(40.98% 0.085 245.3)
XYZ	xyz(6.3860, 6.9654, 17.8341)
Luminance	0.0697 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4E75 #75421B

analogous

#1B756F #1B4E75 #1B2175

triadic

#1B4E75 #751B4E #4E751B

tetradic

#1B4E75 #6F1B75 #75421B #21751B

square

#1B4E75 #6F1B75 #75421B #21751B

split-complementary

#1B4E75 #751B21 #756F1B

monochromatic

#061119 #102D43 #1B4E75 #266FA7 #398FD1

Accessibility & contrast

On white

8.77

#1B4E75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#1B4E75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4E75

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4E75	#FFFFFF	#000000	##FFFFFF
##1B4E75	1.00	8.77	2.39	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C4F77

Deuteranopia (green-blind)

#304774

Tritanopia (blue-blind)

#00575C

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b4e75;
/* rgb */ color: rgb(27, 78, 117);
/* oklch */ color: oklch(41.0% 0.085 245.3);

Tailwind

colors: {
  custom: {
    50: '#657f9d',
    500: '#1b4e75',
    950: '#000000',
  },
}

SCSS

$custom: #1b4e75;
$custom-light: #657f9d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4e75",
  "rgb": {
    "r": 27,
    "g": 78,
    "b": 117
  },
  "hsl": {
    "h": 206,
    "s": 62.5,
    "l": 28.235
  },
  "oklch": {
    "l": 0.40983,
    "c": 0.08468,
    "h": 245.3
  },
  "luminance": 0.06966
}

Semantic roles & 50–950 ramp

primary

#1B4E75

secondary

#A96F42

accent

#8942E6

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1B4E75

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

Preview Lab → · Contrast checker → · Palette generator →