#1D5B79#1D5B79

#1D5B79 is a dark, moderate cyan. Relative luminance 0.091; OKLCH L 44.6% C 0.079 H 233.8°. Best body text is #FFFFFF at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#1D5B79
RGB	rgb(29, 91, 121)
HSL	hsl(200, 61%, 29%)
HSV	hsv(200, 76%, 47%)
CMYK	cmyk(76%, 24.8%, 0%, 52.5%)
CIE-LAB	lab(36.22, -8.76, -22.59)
CIE-LCH	lch(36.22, 24.22, 248.80°)
OKLab	oklab(44.63% -0.0466 -0.0635)
OKLCH	oklch(44.63% 0.079 233.8)
XYZ	xyz(7.6976, 9.1230, 19.4407)
Luminance	0.0912 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D5B79 #793B1D

analogous

#1D7969 #1D5B79 #1D2D79

triadic

#1D5B79 #791D5B #5B791D

tetradic

#1D5B79 #691D79 #793B1D #2D791D

square

#1D5B79 #691D79 #793B1D #2D791D

split-complementary

#1D5B79 #791D2D #79691D

monochromatic

#061319 #113648 #1D5B79 #2980AA #3FA2D1

Accessibility & contrast

On white

7.43

#1D5B79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#1D5B79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D5B79

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D5B79	#FFFFFF	#000000	##FFFFFF
##1D5B79	1.00	7.43	2.82	7.43
#FFFFFF	7.43	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C5A7A

Deuteranopia (green-blind)

#405179

Tritanopia (blue-blind)

#006365

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1d5b79;
/* rgb */ color: rgb(29, 91, 121);
/* oklch */ color: oklch(44.6% 0.079 233.8);

Tailwind

colors: {
  custom: {
    50: '#6789a0',
    500: '#1d5b79',
    950: '#000000',
  },
}

SCSS

$custom: #1d5b79;
$custom-light: #6789a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d5b79",
  "rgb": {
    "r": 29,
    "g": 91,
    "b": 121
  },
  "hsl": {
    "h": 199.565,
    "s": 61.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.44627,
    "c": 0.07879,
    "h": 233.8
  },
  "luminance": 0.09124
}

Semantic roles & 50–950 ramp

primary

#1D5B79

secondary

#AD6745

accent

#7843E4

background

#F6F8F9

surface

#EBF0F2

border

#C6CBCC

text

#070B0E

muted

#7A7C7E

Preview Lab

Preview with #1D5B79

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

Preview Lab → · Contrast checker → · Palette generator →