#1F537B#1F537B

#1F537B is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 42.7% C 0.086 H 245.2°. Best body text is #FFFFFF at 8.13:1 contrast (WCAG AA passes).

Color values

HEX	#1F537B
RGB	rgb(31, 83, 123)
HSL	hsl(206, 60%, 30%)
HSV	hsv(206, 75%, 48%)
CMYK	cmyk(74.8%, 32.5%, 0%, 51.8%)
CIE-LAB	lab(33.79, -2.73, -27.62)
CIE-LCH	lch(33.79, 27.75, 264.35°)
OKLab	oklab(42.75% -0.0362 -0.0782)
OKLCH	oklch(42.75% 0.086 245.2)
XYZ	xyz(7.2321, 7.9071, 19.8801)
Luminance	0.0791 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F537B #7B471F

analogous

#1F7B75 #1F537B #1F257B

triadic

#1F537B #7B1F53 #537B1F

tetradic

#1F537B #751F7B #7B471F #257B1F

square

#1F537B #751F7B #7B471F #257B1F

split-complementary

#1F537B #7B1F25 #7B751F

monochromatic

#061119 #13324A #1F537B #2B74AC #4493D0

Accessibility & contrast

On white

8.13

#1F537B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#1F537B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F537B

8.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F537B	#FFFFFF	#000000	##FFFFFF
##1F537B	1.00	8.13	2.58	8.13
#FFFFFF	8.13	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#41547D

Deuteranopia (green-blind)

#344C7A

Tritanopia (blue-blind)

#005D61

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1f537b;
/* rgb */ color: rgb(31, 83, 123);
/* oklch */ color: oklch(42.7% 0.086 245.2);

Tailwind

colors: {
  custom: {
    50: '#6883a1',
    500: '#1f537b',
    950: '#000000',
  },
}

SCSS

$custom: #1f537b;
$custom-light: #6883a1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f537b",
  "rgb": {
    "r": 31,
    "g": 83,
    "b": 123
  },
  "hsl": {
    "h": 206.087,
    "s": 59.74,
    "l": 30.196
  },
  "oklch": {
    "l": 0.42749,
    "c": 0.08617,
    "h": 245.2
  },
  "luminance": 0.07908
}

Semantic roles & 50–950 ramp

primary

#1F537B

secondary

#AE7448

accent

#8A45E3

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#070A0F

muted

#7A7C7E

Preview Lab

Preview with #1F537B

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

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