#1B4A71#1B4A71

#1B4A71 is a dark, moderate cyan. Relative luminance 0.063; OKLCH L 39.7% C 0.083 H 247.0°. Best body text is #FFFFFF at 9.27:1 contrast (WCAG AA passes).

Color values

HEX	#1B4A71
RGB	rgb(27, 74, 113)
HSL	hsl(207, 61%, 27%)
HSV	hsv(207, 76%, 44%)
CMYK	cmyk(76.1%, 34.5%, 0%, 55.7%)
CIE-LAB	lab(30.21, -1.43, -27.02)
CIE-LCH	lch(30.21, 27.06, 266.96°)
OKLab	oklab(39.72% -0.0325 -0.0766)
OKLCH	oklch(39.72% 0.083 247)
XYZ	xyz(5.8803, 6.3222, 16.5300)
Luminance	0.0632 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4A71 #71421B

analogous

#1B716D #1B4A71 #1B1F71

triadic

#1B4A71 #711B4A #4A711B

tetradic

#1B4A71 #6D1B71 #71421B #1F711B

square

#1B4A71 #6D1B71 #71421B #1F711B

split-complementary

#1B4A71 #711B1F #716D1B

monochromatic

#061019 #0F2A40 #1B4A71 #276AA2 #378ACF

Accessibility & contrast

On white

9.27

#1B4A71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#1B4A71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4A71

9.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4A71	#FFFFFF	#000000	##FFFFFF
##1B4A71	1.00	9.27	2.26	9.27
#FFFFFF	9.27	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#384C73

Deuteranopia (green-blind)

#2C4370

Tritanopia (blue-blind)

#005358

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1b4a71;
/* rgb */ color: rgb(27, 74, 113);
/* oklch */ color: oklch(39.7% 0.083 247.0);

Tailwind

colors: {
  custom: {
    50: '#647c9a',
    500: '#1b4a71',
    950: '#000000',
  },
}

SCSS

$custom: #1b4a71;
$custom-light: #647c9a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4a71",
  "rgb": {
    "r": 27,
    "g": 74,
    "b": 113
  },
  "hsl": {
    "h": 207.209,
    "s": 61.429,
    "l": 27.451
  },
  "oklch": {
    "l": 0.39717,
    "c": 0.08323,
    "h": 247
  },
  "luminance": 0.06323
}

Semantic roles & 50–950 ramp

primary

#1B4A71

secondary

#A66F42

accent

#8C43E5

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#06090E

muted

#7A7B7E

Preview Lab

Preview with #1B4A71

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

Preview Lab → · Contrast checker → · Palette generator →