#1B4E71#1B4E71

#1B4E71 is a dark, moderate cyan. Relative luminance 0.069; OKLCH L 40.7% C 0.080 H 242.5°. Best body text is #FFFFFF at 8.84:1 contrast (WCAG AA passes).

Color values

HEX	#1B4E71
RGB	rgb(27, 78, 113)
HSL	hsl(204, 61%, 27%)
HSV	hsv(204, 76%, 44%)
CMYK	cmyk(76.1%, 31%, 0%, 55.7%)
CIE-LAB	lab(31.52, -4.02, -24.96)
CIE-LCH	lch(31.52, 25.29, 260.86°)
OKLab	oklab(40.75% -0.0367 -0.0706)
OKLCH	oklch(40.75% 0.08 242.5)
XYZ	xyz(6.1559, 6.8733, 16.6218)
Luminance	0.0687 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4E71 #713E1B

analogous

#1B7169 #1B4E71 #1B2371

triadic

#1B4E71 #711B4E #4E711B

tetradic

#1B4E71 #691B71 #713E1B #23711B

square

#1B4E71 #691B71 #713E1B #23711B

split-complementary

#1B4E71 #711B23 #71691B

monochromatic

#061119 #0F2C40 #1B4E71 #2770A2 #3791CF

Accessibility & contrast

On white

8.84

#1B4E71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#1B4E71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4E71

8.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4E71	#FFFFFF	#000000	##FFFFFF
##1B4E71	1.00	8.84	2.37	8.84
#FFFFFF	8.84	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E4F73

Deuteranopia (green-blind)

#324770

Tritanopia (blue-blind)

#00575A

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1b4e71;
/* rgb */ color: rgb(27, 78, 113);
/* oklch */ color: oklch(40.7% 0.080 242.5);

Tailwind

colors: {
  custom: {
    50: '#647f9a',
    500: '#1b4e71',
    950: '#000000',
  },
}

SCSS

$custom: #1b4e71;
$custom-light: #647f9a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4e71",
  "rgb": {
    "r": 27,
    "g": 78,
    "b": 113
  },
  "hsl": {
    "h": 204.419,
    "s": 61.429,
    "l": 27.451
  },
  "oklch": {
    "l": 0.40747,
    "c": 0.07958,
    "h": 242.5
  },
  "luminance": 0.06874
}

Semantic roles & 50–950 ramp

primary

#1B4E71

secondary

#A66B42

accent

#8543E5

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1B4E71

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

Preview Lab → · Contrast checker → · Palette generator →