#1D4E80#1D4E80

#1D4E80 is a dark, moderate cyan. Relative luminance 0.073; OKLCH L 41.7% C 0.099 H 251.8°. Best body text is #FFFFFF at 8.56:1 contrast (WCAG AA passes).

Color values

HEX	#1D4E80
RGB	rgb(29, 78, 128)
HSL	hsl(210, 63%, 31%)
HSV	hsv(210, 77%, 50%)
CMYK	cmyk(77.3%, 39.1%, 0%, 49.8%)
CIE-LAB	lab(32.41, 2.17, -32.90)
CIE-LCH	lch(32.41, 32.97, 273.78°)
OKLab	oklab(41.74% -0.0308 -0.0938)
OKLCH	oklch(41.74% 0.099 251.8)
XYZ	xyz(7.1259, 7.2677, 21.4451)
Luminance	0.0727 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4E80 #804F1D

analogous

#1D7F80 #1D4E80 #1D1D80

triadic

#1D4E80 #801D4E #4E801D

tetradic

#1D4E80 #801D7F #804F1D #1D801D

square

#1D4E80 #801D7F #804F1D #1D801D

split-complementary

#1D4E80 #801D1D #7F801D

monochromatic

#06111C #12304E #1D4E80 #286CB2 #438BD4

Accessibility & contrast

On white

8.56

#1D4E80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#1D4E80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4E80

8.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4E80	#FFFFFF	#000000	##FFFFFF
##1D4E80	1.00	8.56	2.45	8.56
#FFFFFF	8.56	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#375182

Deuteranopia (green-blind)

#28487F

Tritanopia (blue-blind)

#005A61

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1d4e80;
/* rgb */ color: rgb(29, 78, 128);
/* oklch */ color: oklch(41.7% 0.099 251.8);

Tailwind

colors: {
  custom: {
    50: '#687fa5',
    500: '#1d4e80',
    950: '#000000',
  },
}

SCSS

$custom: #1d4e80;
$custom-light: #687fa5;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4e80",
  "rgb": {
    "r": 29,
    "g": 78,
    "b": 128
  },
  "hsl": {
    "h": 210.303,
    "s": 63.057,
    "l": 30.784
  },
  "oklch": {
    "l": 0.41738,
    "c": 0.0987,
    "h": 251.8
  },
  "luminance": 0.07269
}

Semantic roles & 50–950 ramp

primary

#1D4E80

secondary

#B37D45

accent

#9542E6

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1D4E80

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

Preview Lab → · Contrast checker → · Palette generator →