#1B4F75#1B4F75

#1B4F75 is a dark, moderate cyan. Relative luminance 0.071; OKLCH L 41.2% C 0.084 H 244.2°. Best body text is #FFFFFF at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#1B4F75
RGB	rgb(27, 79, 117)
HSL	hsl(205, 63%, 28%)
HSV	hsv(205, 77%, 46%)
CMYK	cmyk(76.9%, 32.5%, 0%, 54.1%)
CIE-LAB	lab(32.05, -3.10, -26.63)
CIE-LCH	lch(32.05, 26.81, 263.36°)
OKLab	oklab(41.24% -0.0364 -0.0754)
OKLCH	oklch(41.24% 0.084 244.2)
XYZ	xyz(6.4576, 7.1086, 17.8579)
Luminance	0.0711 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4F75 #75411B

analogous

#1B756E #1B4F75 #1B2275

triadic

#1B4F75 #751B4F #4F751B

tetradic

#1B4F75 #6E1B75 #75411B #22751B

square

#1B4F75 #6E1B75 #75411B #22751B

split-complementary

#1B4F75 #751B22 #756E1B

monochromatic

#061119 #102D43 #1B4F75 #2671A7 #3991D1

Accessibility & contrast

On white

8.67

#1B4F75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#1B4F75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4F75

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4F75	#FFFFFF	#000000	##FFFFFF
##1B4F75	1.00	8.67	2.42	8.67
#FFFFFF	8.67	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E5077

Deuteranopia (green-blind)

#314874

Tritanopia (blue-blind)

#00585C

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1b4f75;
/* rgb */ color: rgb(27, 79, 117);
/* oklch */ color: oklch(41.2% 0.084 244.2);

Tailwind

colors: {
  custom: {
    50: '#65809d',
    500: '#1b4f75',
    950: '#000000',
  },
}

SCSS

$custom: #1b4f75;
$custom-light: #65809d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4f75",
  "rgb": {
    "r": 27,
    "g": 79,
    "b": 117
  },
  "hsl": {
    "h": 205.333,
    "s": 62.5,
    "l": 28.235
  },
  "oklch": {
    "l": 0.4124,
    "c": 0.08376,
    "h": 244.2
  },
  "luminance": 0.07109
}

Semantic roles & 50–950 ramp

primary

#1B4F75

secondary

#A96E42

accent

#8742E6

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1B4F75

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

Preview Lab → · Contrast checker → · Palette generator →