#1D5B83#1D5B83

#1D5B83 is a mid, moderate cyan. Relative luminance 0.094; OKLCH L 45.2% C 0.090 H 241.5°. Best body text is #FFFFFF at 7.30:1 contrast (WCAG AA passes).

Color values

HEX	#1D5B83
RGB	rgb(29, 91, 131)
HSL	hsl(204, 64%, 31%)
HSV	hsv(204, 78%, 51%)
CMYK	cmyk(77.9%, 30.5%, 0%, 48.6%)
CIE-LAB	lab(36.71, -4.98, -27.96)
CIE-LCH	lch(36.71, 28.40, 259.90°)
OKLab	oklab(45.18% -0.043 -0.0791)
OKLCH	oklch(45.18% 0.09 241.5)
XYZ	xyz(8.3429, 9.3811, 22.8394)
Luminance	0.0938 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D5B83 #83451D

analogous

#1D8378 #1D5B83 #1D2883

triadic

#1D5B83 #831D5B #5B831D

tetradic

#1D5B83 #781D83 #83451D #28831D

square

#1D5B83 #781D83 #83451D #28831D

split-complementary

#1D5B83 #831D28 #83781D

monochromatic

#07151F #123851 #1D5B83 #287EB5 #459DD6

Accessibility & contrast

On white

7.30

#1D5B83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#1D5B83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D5B83

7.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D5B83	#FFFFFF	#000000	##FFFFFF
##1D5B83	1.00	7.30	2.88	7.30
#FFFFFF	7.30	1.00	21.00	1.00
#000000	2.88	21.00	1.00	21.00
##FFFFFF	7.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#485C85

Deuteranopia (green-blind)

#3A5282

Tritanopia (blue-blind)

#006569

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1d5b83;
/* rgb */ color: rgb(29, 91, 131);
/* oklch */ color: oklch(45.2% 0.090 241.5);

Tailwind

colors: {
  custom: {
    50: '#6989a7',
    500: '#1d5b83',
    950: '#000000',
  },
}

SCSS

$custom: #1d5b83;
$custom-light: #6989a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1d5b83",
  "rgb": {
    "r": 29,
    "g": 91,
    "b": 131
  },
  "hsl": {
    "h": 203.529,
    "s": 63.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.45175,
    "c": 0.09004,
    "h": 241.5
  },
  "luminance": 0.09382
}

Semantic roles & 50–950 ramp

primary

#1D5B83

secondary

#B67246

accent

#8241E7

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1D5B83

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

Preview Lab → · Contrast checker → · Palette generator →