#1F537A#1F537A

#1F537A is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 42.7% C 0.085 H 244.5°. Best body text is #FFFFFF at 8.15:1 contrast (WCAG AA passes).

Color values

HEX	#1F537A
RGB	rgb(31, 83, 122)
HSL	hsl(206, 59%, 30%)
HSV	hsv(206, 75%, 48%)
CMYK	cmyk(74.6%, 32%, 0%, 52.2%)
CIE-LAB	lab(33.74, -3.12, -27.08)
CIE-LCH	lch(33.74, 27.26, 263.44°)
OKLab	oklab(42.69% -0.0365 -0.0767)
OKLCH	oklch(42.69% 0.085 244.5)
XYZ	xyz(7.1698, 7.8822, 19.5521)
Luminance	0.0788 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F537A #7A461F

analogous

#1F7A73 #1F537A #1F267A

triadic

#1F537A #7A1F53 #537A1F

tetradic

#1F537A #731F7A #7A461F #267A1F

square

#1F537A #731F7A #7A461F #267A1F

split-complementary

#1F537A #7A1F26 #7A731F

monochromatic

#061118 #133249 #1F537A #2B74AB #4494CF

Accessibility & contrast

On white

8.15

#1F537A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#1F537A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F537A

8.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F537A	#FFFFFF	#000000	##FFFFFF
##1F537A	1.00	8.15	2.58	8.15
#FFFFFF	8.15	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#41547C

Deuteranopia (green-blind)

#354B79

Tritanopia (blue-blind)

#005C61

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1f537a;
/* rgb */ color: rgb(31, 83, 122);
/* oklch */ color: oklch(42.7% 0.085 244.5);

Tailwind

colors: {
  custom: {
    50: '#6783a0',
    500: '#1f537a',
    950: '#000000',
  },
}

SCSS

$custom: #1f537a;
$custom-light: #6783a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f537a",
  "rgb": {
    "r": 31,
    "g": 83,
    "b": 122
  },
  "hsl": {
    "h": 205.714,
    "s": 59.477,
    "l": 30
  },
  "oklch": {
    "l": 0.42691,
    "c": 0.0849,
    "h": 244.5
  },
  "luminance": 0.07883
}

Semantic roles & 50–950 ramp

primary

#1F537A

secondary

#AD7347

accent

#8945E3

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#070A0F

muted

#7A7C7E

Preview Lab

Preview with #1F537A

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

Preview Lab → · Contrast checker → · Palette generator →