#1D537B#1D537B

#1D537B is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 42.7% C 0.087 H 244.5°. Best body text is #FFFFFF at 8.15:1 contrast (WCAG AA passes).

Color values

HEX#1D537B
RGBrgb(29, 83, 123)
HSLhsl(206, 62%, 30%)
HSVhsv(206, 76%, 48%)
CMYKcmyk(76.4%, 32.5%, 0%, 51.8%)
CIE-LABlab(33.73, -3.03, -27.72)
CIE-LCHlch(33.73, 27.89, 263.76°)
OKLaboklab(42.68% -0.0374 -0.0785)
OKLCHoklch(42.68% 0.087 244.5)
XYZxyz(7.1737, 7.8770, 19.8774)
Luminance0.0788 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1D537B #7B451D
analogous
#1D7B74 #1D537B #1D247B
triadic
#1D537B #7B1D53 #537B1D
tetradic
#1D537B #741D7B #7B451D #247B1D
square
#1D537B #741D7B #7B451D #247B1D
split-complementary
#1D537B #7B1D24 #7B741D
monochromatic
#061119 #113249 #1D537B #2974AD #4094D2

Accessibility & contrast

On white

8.15
#1D537B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.58
#1D537B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D537B
8.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1D537B#FFFFFF#000000##FFFFFF
##1D537B1.008.152.588.15
#FFFFFF8.151.0021.001.00
#0000002.5821.001.0021.00
##FFFFFF8.151.0021.001.00

Color blindness preview

Protanopia (red-blind)
#41547D
Deuteranopia (green-blind)
#344B7A
Tritanopia (blue-blind)
#005D61
Achromatopsia (no color)
#4F4F4F

Design tokens & code

CSS
--color: #1d537b;
/* rgb */ color: rgb(29, 83, 123);
/* oklch */ color: oklch(42.7% 0.087 244.5);
Tailwind
colors: {
  custom: {
    50: '#6783a1',
    500: '#1d537b',
    950: '#000000',
  },
}
SCSS
$custom: #1d537b;
$custom-light: #6783a1;
$custom-dark: #000000;
JSON
{
  "hex": "#1d537b",
  "rgb": {
    "r": 29,
    "g": 83,
    "b": 123
  },
  "hsl": {
    "h": 205.532,
    "s": 61.842,
    "l": 29.804
  },
  "oklch": {
    "l": 0.42682,
    "c": 0.087,
    "h": 244.5
  },
  "luminance": 0.07878
}

Semantic roles & 50–950 ramp

primary
#1D537B
secondary
#AF7245
accent
#8843E5
background
#F6F7F9
surface
#EBEEF2
border
#C6C9CC
text
#070A0F
muted
#7A7C7E

Preview Lab

Preview with #1D537B

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

Preview Lab → · Contrast checker → · Palette generator →

#1D537B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva