#1B537E#1B537E

#1B537E is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 42.8% C 0.092 H 245.8°. Best body text is #FFFFFF at 8.12:1 contrast (WCAG AA passes).

Color values

HEX	#1B537E
RGB	rgb(27, 83, 126)
HSL	hsl(206, 65%, 30%)
HSV	hsv(206, 79%, 49%)
CMYK	cmyk(78.6%, 34.1%, 0%, 50.6%)
CIE-LAB	lab(33.83, -2.14, -29.42)
CIE-LCH	lch(33.83, 29.50, 265.84°)
OKLab	oklab(42.8% -0.0376 -0.0835)
OKLCH	oklch(42.8% 0.092 245.8)
XYZ	xyz(7.3097, 7.9250, 20.8791)
Luminance	0.0793 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B537E #7E461B

analogous

#1B7E78 #1B537E #1B217E

triadic

#1B537E #7E1B53 #537E1B

tetradic

#1B537E #781B7E #7E461B #217E1B

square

#1B537E #781B7E #7E461B #217E1B

split-complementary

#1B537E #7E1B21 #7E781B

monochromatic

#051119 #10324C #1B537E #2674B0 #3E94D6

Accessibility & contrast

On white

8.12

#1B537E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#1B537E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B537E

8.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B537E	#FFFFFF	#000000	##FFFFFF
##1B537E	1.00	8.12	2.59	8.12
#FFFFFF	8.12	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F5580

Deuteranopia (green-blind)

#314B7D

Tritanopia (blue-blind)

#005D62

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1b537e;
/* rgb */ color: rgb(27, 83, 126);
/* oklch */ color: oklch(42.8% 0.092 245.8);

Tailwind

colors: {
  custom: {
    50: '#6783a3',
    500: '#1b537e',
    950: '#000000',
  },
}

SCSS

$custom: #1b537e;
$custom-light: #6783a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b537e",
  "rgb": {
    "r": 27,
    "g": 83,
    "b": 126
  },
  "hsl": {
    "h": 206.061,
    "s": 64.706,
    "l": 30
  },
  "oklch": {
    "l": 0.42797,
    "c": 0.09161,
    "h": 245.8
  },
  "luminance": 0.07926
}

Semantic roles & 50–950 ramp

primary

#1B537E

secondary

#B27343

accent

#8940E8

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1B537E

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

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