#1B4F72#1B4F72

#1B4F72 is a dark, moderate cyan. Relative luminance 0.070; OKLCH L 41.1% C 0.080 H 242.1°. Best body text is #FFFFFF at 8.72:1 contrast (WCAG AA passes).

Color values

HEX	#1B4F72
RGB	rgb(27, 79, 114)
HSL	hsl(204, 62%, 28%)
HSV	hsv(204, 76%, 45%)
CMYK	cmyk(76.3%, 30.7%, 0%, 55.3%)
CIE-LAB	lab(31.90, -4.27, -25.00)
CIE-LCH	lch(31.90, 25.36, 260.31°)
OKLab	oklab(41.06% -0.0374 -0.0707)
OKLCH	oklch(41.06% 0.08 242.1)
XYZ	xyz(6.2841, 7.0392, 16.9438)
Luminance	0.0704 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4F72 #723E1B

analogous

#1B7269 #1B4F72 #1B2372

triadic

#1B4F72 #721B4F #4F721B

tetradic

#1B4F72 #691B72 #723E1B #23721B

square

#1B4F72 #691B72 #723E1B #23721B

split-complementary

#1B4F72 #721B23 #72691B

monochromatic

#061119 #0F2D41 #1B4F72 #2771A3 #3893D0

Accessibility & contrast

On white

8.72

#1B4F72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#1B4F72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4F72

8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4F72	#FFFFFF	#000000	##FFFFFF
##1B4F72	1.00	8.72	2.41	8.72
#FFFFFF	8.72	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F5074

Deuteranopia (green-blind)

#334771

Tritanopia (blue-blind)

#00585B

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b4f72;
/* rgb */ color: rgb(27, 79, 114);
/* oklch */ color: oklch(41.1% 0.080 242.1);

Tailwind

colors: {
  custom: {
    50: '#64809a',
    500: '#1b4f72',
    950: '#000000',
  },
}

SCSS

$custom: #1b4f72;
$custom-light: #64809a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4f72",
  "rgb": {
    "r": 27,
    "g": 79,
    "b": 114
  },
  "hsl": {
    "h": 204.138,
    "s": 61.702,
    "l": 27.647
  },
  "oklch": {
    "l": 0.41064,
    "c": 0.07998,
    "h": 242.1
  },
  "luminance": 0.0704
}

Semantic roles & 50–950 ramp

primary

#1B4F72

secondary

#A76B42

accent

#8443E5

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1B4F72

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

Preview Lab → · Contrast checker → · Palette generator →