#1B5B7C#1B5B7C

#1B5B7C is a dark, moderate cyan. Relative luminance 0.092; OKLCH L 44.7% C 0.083 H 235.8°. Best body text is #FFFFFF at 7.41:1 contrast (WCAG AA passes).

Color values

HEX	#1B5B7C
RGB	rgb(27, 91, 124)
HSL	hsl(200, 64%, 30%)
HSV	hsv(200, 78%, 49%)
CMYK	cmyk(78.2%, 26.6%, 0%, 51.4%)
CIE-LAB	lab(36.31, -7.91, -24.30)
CIE-LCH	lch(36.31, 25.55, 251.96°)
OKLab	oklab(44.73% -0.0465 -0.0685)
OKLCH	oklch(44.73% 0.083 235.8)
XYZ	xyz(7.8297, 9.1695, 20.4221)
Luminance	0.0917 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5B7C #7C3C1B

analogous

#1B7C6C #1B5B7C #1B2B7C

triadic

#1B5B7C #7C1B5B #5B7C1B

tetradic

#1B5B7C #6C1B7C #7C3C1B #2B7C1B

square

#1B5B7C #6C1B7C #7C3C1B #2B7C1B

split-complementary

#1B5B7C #7C1B2B #7C6C1B

monochromatic

#051219 #10364A #1B5B7C #2680AE #3DA1D5

Accessibility & contrast

On white

7.41

#1B5B7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#1B5B7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5B7C

7.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5B7C	#FFFFFF	#000000	##FFFFFF
##1B5B7C	1.00	7.41	2.83	7.41
#FFFFFF	7.41	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B5B7E

Deuteranopia (green-blind)

#3E517B

Tritanopia (blue-blind)

#006466

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1b5b7c;
/* rgb */ color: rgb(27, 91, 124);
/* oklch */ color: oklch(44.7% 0.083 235.8);

Tailwind

colors: {
  custom: {
    50: '#6789a2',
    500: '#1b5b7c',
    950: '#000000',
  },
}

SCSS

$custom: #1b5b7c;
$custom-light: #6789a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5b7c",
  "rgb": {
    "r": 27,
    "g": 91,
    "b": 124
  },
  "hsl": {
    "h": 200.412,
    "s": 64.238,
    "l": 29.608
  },
  "oklch": {
    "l": 0.4473,
    "c": 0.08281,
    "h": 235.8
  },
  "luminance": 0.0917
}

Semantic roles & 50–950 ramp

primary

#1B5B7C

secondary

#B06843

accent

#7941E7

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#070B0F

muted

#7A7C7E

Preview Lab

Preview with #1B5B7C

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

Preview Lab → · Contrast checker → · Palette generator →