#1B537D#1B537D

#1B537D is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 42.7% C 0.090 H 245.2°. Best body text is #FFFFFF at 8.14:1 contrast (WCAG AA passes).

Color values

HEX	#1B537D
RGB	rgb(27, 83, 125)
HSL	hsl(206, 64%, 30%)
HSV	hsv(206, 78%, 49%)
CMYK	cmyk(78.4%, 33.6%, 0%, 51%)
CIE-LAB	lab(33.77, -2.53, -28.89)
CIE-LCH	lch(33.77, 29.00, 264.99°)
OKLab	oklab(42.74% -0.0379 -0.082)
OKLCH	oklch(42.74% 0.09 245.2)
XYZ	xyz(7.2455, 7.8993, 20.5409)
Luminance	0.0790 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B537D #7D451B

analogous

#1B7D76 #1B537D #1B227D

triadic

#1B537D #7D1B53 #537D1B

tetradic

#1B537D #761B7D #7D451B #227D1B

square

#1B537D #761B7D #7D451B #227D1B

split-complementary

#1B537D #7D1B22 #7D761B

monochromatic

#051119 #10324B #1B537D #2674AF #3D94D5

Accessibility & contrast

On white

8.14

#1B537D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#1B537D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B537D

8.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B537D	#FFFFFF	#000000	##FFFFFF
##1B537D	1.00	8.14	2.58	8.14
#FFFFFF	8.14	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#40547F

Deuteranopia (green-blind)

#324B7C

Tritanopia (blue-blind)

#005D62

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1b537d;
/* rgb */ color: rgb(27, 83, 125);
/* oklch */ color: oklch(42.7% 0.090 245.2);

Tailwind

colors: {
  custom: {
    50: '#6783a3',
    500: '#1b537d',
    950: '#000000',
  },
}

SCSS

$custom: #1b537d;
$custom-light: #6783a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b537d",
  "rgb": {
    "r": 27,
    "g": 83,
    "b": 125
  },
  "hsl": {
    "h": 205.714,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.42737,
    "c": 0.09032,
    "h": 245.2
  },
  "luminance": 0.079
}

Semantic roles & 50–950 ramp

primary

#1B537D

secondary

#B17243

accent

#8840E7

background

#F6F7FA

surface

#EBEEF3

border

#C6C9CD

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1B537D

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

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