#1B537C#1B537C

#1B537C is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 42.7% C 0.089 H 244.6°. Best body text is #FFFFFF at 8.16:1 contrast (WCAG AA passes).

Color values

HEX	#1B537C
RGB	rgb(27, 83, 124)
HSL	hsl(205, 64%, 30%)
HSV	hsv(205, 78%, 49%)
CMYK	cmyk(78.2%, 33.1%, 0%, 51.4%)
CIE-LAB	lab(33.72, -2.92, -28.36)
CIE-LCH	lch(33.72, 28.51, 264.12°)
OKLab	oklab(42.68% -0.0383 -0.0804)
OKLCH	oklch(42.68% 0.089 244.6)
XYZ	xyz(7.1819, 7.8739, 20.2062)
Luminance	0.0788 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B537C #7C441B

analogous

#1B7C75 #1B537C #1B237C

triadic

#1B537C #7C1B53 #537C1B

tetradic

#1B537C #751B7C #7C441B #237C1B

square

#1B537C #751B7C #7C441B #237C1B

split-complementary

#1B537C #7C1B23 #7C751B

monochromatic

#051119 #10314A #1B537C #2675AE #3D94D5

Accessibility & contrast

On white

8.16

#1B537C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#1B537C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B537C

8.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B537C	#FFFFFF	#000000	##FFFFFF
##1B537C	1.00	8.16	2.58	8.16
#FFFFFF	8.16	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#40547E

Deuteranopia (green-blind)

#334B7B

Tritanopia (blue-blind)

#005D62

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1b537c;
/* rgb */ color: rgb(27, 83, 124);
/* oklch */ color: oklch(42.7% 0.089 244.6);

Tailwind

colors: {
  custom: {
    50: '#6683a2',
    500: '#1b537c',
    950: '#000000',
  },
}

SCSS

$custom: #1b537c;
$custom-light: #6683a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b537c",
  "rgb": {
    "r": 27,
    "g": 83,
    "b": 124
  },
  "hsl": {
    "h": 205.361,
    "s": 64.238,
    "l": 29.608
  },
  "oklch": {
    "l": 0.42677,
    "c": 0.08905,
    "h": 244.6
  },
  "luminance": 0.07875
}

Semantic roles & 50–950 ramp

primary

#1B537C

secondary

#B07143

accent

#8741E7

background

#F6F7FA

surface

#EBEEF3

border

#C6C9CD

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1B537C

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

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