#1D537F#1D537F

#1D537F is a dark, moderate cyan. Relative luminance 0.080; OKLCH L 42.9% C 0.092 H 246.9°. Best body text is #FFFFFF at 8.09:1 contrast (WCAG AA passes).

Color values

HEX	#1D537F
RGB	rgb(29, 83, 127)
HSL	hsl(207, 63%, 31%)
HSV	hsv(207, 77%, 50%)
CMYK	cmyk(77.2%, 34.6%, 0%, 50.2%)
CIE-LAB	lab(33.94, -1.47, -29.86)
CIE-LCH	lch(33.94, 29.89, 267.17°)
OKLab	oklab(42.92% -0.0361 -0.0848)
OKLCH	oklch(42.92% 0.092 246.9)
XYZ	xyz(7.4293, 7.9792, 21.2231)
Luminance	0.0798 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D537F #7F491D

analogous

#1D7F7A #1D537F #1D227F

triadic

#1D537F #7F1D53 #537F1D

tetradic

#1D537F #7A1D7F #7F491D #227F1D

square

#1D537F #7A1D7F #7F491D #227F1D

split-complementary

#1D537F #7F1D22 #7F7A1D

monochromatic

#06121B #12324D #1D537F #2874B1 #4293D4

Accessibility & contrast

On white

8.09

#1D537F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#1D537F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D537F

8.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D537F	#FFFFFF	#000000	##FFFFFF
##1D537F	1.00	8.09	2.60	8.09
#FFFFFF	8.09	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F5581

Deuteranopia (green-blind)

#314C7E

Tritanopia (blue-blind)

#005E63

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1d537f;
/* rgb */ color: rgb(29, 83, 127);
/* oklch */ color: oklch(42.9% 0.092 246.9);

Tailwind

colors: {
  custom: {
    50: '#6883a4',
    500: '#1d537f',
    950: '#000000',
  },
}

SCSS

$custom: #1d537f;
$custom-light: #6883a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1d537f",
  "rgb": {
    "r": 29,
    "g": 83,
    "b": 127
  },
  "hsl": {
    "h": 206.939,
    "s": 62.821,
    "l": 30.588
  },
  "oklch": {
    "l": 0.42921,
    "c": 0.09216,
    "h": 246.9
  },
  "luminance": 0.0798
}

Semantic roles & 50–950 ramp

primary

#1D537F

secondary

#B27645

accent

#8C42E6

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1D537F

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

Preview Lab → · Contrast checker → · Palette generator →