#1D5F8D#1D5F8D

#1D5F8D is a mid, moderate cyan. Relative luminance 0.104; OKLCH L 46.8% C 0.099 H 243.8°. Best body text is #FFFFFF at 6.83:1 contrast (WCAG AA passes).

Color values

HEX	#1D5F8D
RGB	rgb(29, 95, 141)
HSL	hsl(205, 66%, 33%)
HSV	hsv(205, 79%, 55%)
CMYK	cmyk(79.4%, 32.6%, 0%, 44.7%)
CIE-LAB	lab(38.49, -3.63, -31.23)
CIE-LCH	lch(38.49, 31.44, 263.38°)
OKLab	oklab(46.76% -0.0437 -0.0886)
OKLCH	oklch(46.76% 0.099 243.8)
XYZ	xyz(9.4048, 10.3676, 26.6996)
Luminance	0.1037 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D5F8D #8D4B1D

analogous

#1D8D83 #1D5F8D #1D278D

triadic

#1D5F8D #8D1D5F #5F8D1D

tetradic

#1D5F8D #831D8D #8D4B1D #278D1D

square

#1D5F8D #831D8D #8D4B1D #278D1D

split-complementary

#1D5F8D #8D1D27 #8D831D

monochromatic

#081B27 #133D5A #1D5F8D #2781C0 #4B9FDA

Accessibility & contrast

On white

6.83

#1D5F8D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#1D5F8D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1D5F8D

6.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D5F8D	#FFFFFF	#000000	##FFFFFF
##1D5F8D	1.00	6.83	3.07	6.83
#FFFFFF	6.83	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A608F

Deuteranopia (green-blind)

#3A568C

Tritanopia (blue-blind)

#006A6F

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #1d5f8d;
/* rgb */ color: rgb(29, 95, 141);
/* oklch */ color: oklch(46.8% 0.099 243.8);

Tailwind

colors: {
  custom: {
    50: '#6b8cae',
    500: '#1d5f8d',
    950: '#000000',
  },
}

SCSS

$custom: #1d5f8d;
$custom-light: #6b8cae;
$custom-dark: #000000;

JSON

{
  "hex": "#1d5f8d",
  "rgb": {
    "r": 29,
    "g": 95,
    "b": 141
  },
  "hsl": {
    "h": 204.643,
    "s": 65.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.46757,
    "c": 0.09877,
    "h": 243.8
  },
  "luminance": 0.10369
}

Semantic roles & 50–950 ramp

primary

#1D5F8D

secondary

#BC794A

accent

#853FE9

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#080C10

muted

#7A7D7F

Preview Lab

Preview with #1D5F8D

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

Preview Lab → · Contrast checker → · Palette generator →