#1F537D#1F537D

#1F537D is a dark, moderate cyan. Relative luminance 0.080; OKLCH L 42.9% C 0.089 H 246.4°. Best body text is #FFFFFF at 8.10:1 contrast (WCAG AA passes).

Color values

HEX	#1F537D
RGB	rgb(31, 83, 125)
HSL	hsl(207, 60%, 31%)
HSV	hsv(207, 75%, 49%)
CMYK	cmyk(75.2%, 33.6%, 0%, 51%)
CIE-LAB	lab(33.89, -1.96, -28.69)
CIE-LCH	lch(33.89, 28.76, 266.09°)
OKLab	oklab(42.87% -0.0355 -0.0813)
OKLCH	oklch(42.87% 0.089 246.4)
XYZ	xyz(7.3586, 7.9577, 20.5462)
Luminance	0.0796 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F537D #7D491F

analogous

#1F7D78 #1F537D #1F247D

triadic

#1F537D #7D1F53 #537D1F

tetradic

#1F537D #781F7D #7D491F #247D1F

square

#1F537D #781F7D #7D491F #247D1F

split-complementary

#1F537D #7D1F24 #7D781F

monochromatic

#07121B #13324C #1F537D #2B74AE #4593D1

Accessibility & contrast

On white

8.10

#1F537D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#1F537D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F537D

8.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F537D	#FFFFFF	#000000	##FFFFFF
##1F537D	1.00	8.10	2.59	8.10
#FFFFFF	8.10	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#40557F

Deuteranopia (green-blind)

#334C7C

Tritanopia (blue-blind)

#005D62

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1f537d;
/* rgb */ color: rgb(31, 83, 125);
/* oklch */ color: oklch(42.9% 0.089 246.4);

Tailwind

colors: {
  custom: {
    50: '#6883a3',
    500: '#1f537d',
    950: '#000000',
  },
}

SCSS

$custom: #1f537d;
$custom-light: #6883a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f537d",
  "rgb": {
    "r": 31,
    "g": 83,
    "b": 125
  },
  "hsl": {
    "h": 206.809,
    "s": 60.256,
    "l": 30.588
  },
  "oklch": {
    "l": 0.42868,
    "c": 0.08876,
    "h": 246.4
  },
  "luminance": 0.07958
}

Semantic roles & 50–950 ramp

primary

#1F537D

secondary

#B07648

accent

#8B44E3

background

#F6F7FA

surface

#EBEEF3

border

#C6C9CD

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1F537D

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

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