#1B4F7A#1B4F7A

#1B4F7A is a dark, moderate cyan. Relative luminance 0.072; OKLCH L 41.5% C 0.090 H 247.3°. Best body text is #FFFFFF at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#1B4F7A
RGB	rgb(27, 79, 122)
HSL	hsl(207, 64%, 29%)
HSV	hsv(207, 78%, 48%)
CMYK	cmyk(77.9%, 35.2%, 0%, 52.2%)
CIE-LAB	lab(32.32, -1.14, -29.32)
CIE-LCH	lch(32.32, 29.34, 267.78°)
OKLab	oklab(41.54% -0.0348 -0.0833)
OKLCH	oklch(41.54% 0.09 247.3)
XYZ	xyz(6.7595, 7.2293, 19.4477)
Luminance	0.0723 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4F7A #7A461B

analogous

#1B7A76 #1B4F7A #1B207A

triadic

#1B4F7A #7A1B4F #4F7A1B

tetradic

#1B4F7A #761B7A #7A461B #207A1B

square

#1B4F7A #761B7A #7A461B #207A1B

split-complementary

#1B4F7A #7A1B20 #7A761B

monochromatic

#061019 #102F48 #1B4F7A #266FAC #3C8FD4

Accessibility & contrast

On white

8.59

#1B4F7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#1B4F7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4F7A

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4F7A	#FFFFFF	#000000	##FFFFFF
##1B4F7A	1.00	8.59	2.45	8.59
#FFFFFF	8.59	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B517C

Deuteranopia (green-blind)

#2E4879

Tritanopia (blue-blind)

#00595F

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1b4f7a;
/* rgb */ color: rgb(27, 79, 122);
/* oklch */ color: oklch(41.5% 0.090 247.3);

Tailwind

colors: {
  custom: {
    50: '#6680a0',
    500: '#1b4f7a',
    950: '#000000',
  },
}

SCSS

$custom: #1b4f7a;
$custom-light: #6680a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4f7a",
  "rgb": {
    "r": 27,
    "g": 79,
    "b": 122
  },
  "hsl": {
    "h": 207.158,
    "s": 63.758,
    "l": 29.216
  },
  "oklch": {
    "l": 0.41542,
    "c": 0.09027,
    "h": 247.3
  },
  "luminance": 0.0723
}

Semantic roles & 50–950 ramp

primary

#1B4F7A

secondary

#AE7343

accent

#8C41E7

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#070A0F

muted

#7A7C7E

Preview Lab

Preview with #1B4F7A

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

Preview Lab → · Contrast checker → · Palette generator →