#1D5F8F#1D5F8F

#1D5F8F is a mid, moderate cyan. Relative luminance 0.104; OKLCH L 46.9% C 0.101 H 244.8°. Best body text is #FFFFFF at 6.81:1 contrast (WCAG AA passes).

Color values

HEX	#1D5F8F
RGB	rgb(29, 95, 143)
HSL	hsl(205, 66%, 34%)
HSV	hsv(205, 80%, 56%)
CMYK	cmyk(79.7%, 33.6%, 0%, 43.9%)
CIE-LAB	lab(38.60, -2.85, -32.27)
CIE-LCH	lch(38.60, 32.40, 264.94°)
OKLab	oklab(46.88% -0.043 -0.0916)
OKLCH	oklch(46.88% 0.101 244.8)
XYZ	xyz(9.5549, 10.4277, 27.4904)
Luminance	0.1043 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D5F8F #8F4D1D

analogous

#1D8F86 #1D5F8F #1D268F

triadic

#1D5F8F #8F1D5F #5F8F1D

tetradic

#1D5F8F #861D8F #8F4D1D #268F1D

square

#1D5F8F #861D8F #8F4D1D #268F1D

split-complementary

#1D5F8F #8F1D26 #8F861D

monochromatic

#081B29 #133D5C #1D5F8F #2781C2 #4C9EDB

Accessibility & contrast

On white

6.81

#1D5F8F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#1D5F8F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1D5F8F

6.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D5F8F	#FFFFFF	#000000	##FFFFFF
##1D5F8F	1.00	6.81	3.09	6.81
#FFFFFF	6.81	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#496191

Deuteranopia (green-blind)

#39568E

Tritanopia (blue-blind)

#006B70

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #1d5f8f;
/* rgb */ color: rgb(29, 95, 143);
/* oklch */ color: oklch(46.9% 0.101 244.8);

Tailwind

colors: {
  custom: {
    50: '#6b8cb0',
    500: '#1d5f8f',
    950: '#000000',
  },
}

SCSS

$custom: #1d5f8f;
$custom-light: #6b8cb0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d5f8f",
  "rgb": {
    "r": 29,
    "g": 95,
    "b": 143
  },
  "hsl": {
    "h": 205.263,
    "s": 66.279,
    "l": 33.725
  },
  "oklch": {
    "l": 0.46875,
    "c": 0.10124,
    "h": 244.8
  },
  "luminance": 0.10429
}

Semantic roles & 50–950 ramp

primary

#1D5F8F

secondary

#BD7B4B

accent

#863FE9

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#080C10

muted

#7A7D7F

Preview Lab

Preview with #1D5F8F

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

Preview Lab → · Contrast checker → · Palette generator →