#1B5B7D#1B5B7D

#1B5B7D is a dark, moderate cyan. Relative luminance 0.092; OKLCH L 44.8% C 0.084 H 236.6°. Best body text is #FFFFFF at 7.40:1 contrast (WCAG AA passes).

Color values

HEX	#1B5B7D
RGB	rgb(27, 91, 125)
HSL	hsl(201, 64%, 30%)
HSV	hsv(201, 78%, 49%)
CMYK	cmyk(78.4%, 27.2%, 0%, 51%)
CIE-LAB	lab(36.36, -7.53, -24.84)
CIE-LCH	lch(36.36, 25.95, 253.13°)
OKLab	oklab(44.78% -0.0461 -0.0701)
OKLCH	oklch(44.78% 0.084 236.6)
XYZ	xyz(7.8933, 9.1949, 20.7569)
Luminance	0.0920 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5B7D #7D3D1B

analogous

#1B7D6E #1B5B7D #1B2A7D

triadic

#1B5B7D #7D1B5B #5B7D1B

tetradic

#1B5B7D #6E1B7D #7D3D1B #2A7D1B

square

#1B5B7D #6E1B7D #7D3D1B #2A7D1B

split-complementary

#1B5B7D #7D1B2A #7D6E1B

monochromatic

#051219 #10364B #1B5B7D #2680AF #3DA0D5

Accessibility & contrast

On white

7.40

#1B5B7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#1B5B7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5B7D

7.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5B7D	#FFFFFF	#000000	##FFFFFF
##1B5B7D	1.00	7.40	2.84	7.40
#FFFFFF	7.40	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B5B7F

Deuteranopia (green-blind)

#3D517C

Tritanopia (blue-blind)

#006467

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1b5b7d;
/* rgb */ color: rgb(27, 91, 125);
/* oklch */ color: oklch(44.8% 0.084 236.6);

Tailwind

colors: {
  custom: {
    50: '#6789a3',
    500: '#1b5b7d',
    950: '#000000',
  },
}

SCSS

$custom: #1b5b7d;
$custom-light: #6789a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5b7d",
  "rgb": {
    "r": 27,
    "g": 91,
    "b": 125
  },
  "hsl": {
    "h": 200.816,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.44784,
    "c": 0.08391,
    "h": 236.6
  },
  "luminance": 0.09196
}

Semantic roles & 50–950 ramp

primary

#1B5B7D

secondary

#B16943

accent

#7A40E7

background

#F6F8FA

surface

#EBF0F3

border

#C6CBCD

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1B5B7D

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

Preview Lab → · Contrast checker → · Palette generator →