#1F537C#1F537C

#1F537C is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 42.8% C 0.087 H 245.8°. Best body text is #FFFFFF at 8.12:1 contrast (WCAG AA passes).

Color values

HEX	#1F537C
RGB	rgb(31, 83, 124)
HSL	hsl(206, 60%, 30%)
HSV	hsv(206, 75%, 49%)
CMYK	cmyk(75%, 33.1%, 0%, 51.4%)
CIE-LAB	lab(33.84, -2.35, -28.16)
CIE-LCH	lch(33.84, 28.25, 265.24°)
OKLab	oklab(42.81% -0.0358 -0.0798)
OKLCH	oklch(42.81% 0.087 245.8)
XYZ	xyz(7.2950, 7.9322, 20.2115)
Luminance	0.0793 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F537C #7C481F

analogous

#1F7C76 #1F537C #1F247C

triadic

#1F537C #7C1F53 #537C1F

tetradic

#1F537C #761F7C #7C481F #247C1F

square

#1F537C #761F7C #7C481F #247C1F

split-complementary

#1F537C #7C1F24 #7C761F

monochromatic

#07111A #13324B #1F537C #2B74AD #4593D0

Accessibility & contrast

On white

8.12

#1F537C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#1F537C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F537C

8.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F537C	#FFFFFF	#000000	##FFFFFF
##1F537C	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)

#40547E

Deuteranopia (green-blind)

#334C7B

Tritanopia (blue-blind)

#005D62

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1f537c;
/* rgb */ color: rgb(31, 83, 124);
/* oklch */ color: oklch(42.8% 0.087 245.8);

Tailwind

colors: {
  custom: {
    50: '#6883a2',
    500: '#1f537c',
    950: '#000000',
  },
}

SCSS

$custom: #1f537c;
$custom-light: #6883a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f537c",
  "rgb": {
    "r": 31,
    "g": 83,
    "b": 124
  },
  "hsl": {
    "h": 206.452,
    "s": 60,
    "l": 30.392
  },
  "oklch": {
    "l": 0.42808,
    "c": 0.08746,
    "h": 245.8
  },
  "luminance": 0.07933
}

Semantic roles & 50–950 ramp

primary

#1F537C

secondary

#AF7548

accent

#8B45E3

background

#F6F7FA

surface

#EBEEF3

border

#C6C9CD

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1F537C

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

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