#1B5D83#1B5D83

#1B5D83 is a mid, moderate cyan. Relative luminance 0.097; OKLCH L 45.6% C 0.089 H 238.9°. Best body text is #FFFFFF at 7.14:1 contrast (WCAG AA passes).

Color values

HEX	#1B5D83
RGB	rgb(27, 93, 131)
HSL	hsl(202, 66%, 31%)
HSV	hsv(202, 79%, 51%)
CMYK	cmyk(79.4%, 29%, 0%, 48.6%)
CIE-LAB	lab(37.30, -6.47, -27.04)
CIE-LCH	lch(37.30, 27.80, 256.54°)
OKLab	oklab(45.63% -0.046 -0.0764)
OKLCH	oklch(45.63% 0.089 238.9)
XYZ	xyz(8.4615, 9.6994, 22.8945)
Luminance	0.0970 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5D83 #83411B

analogous

#1B8375 #1B5D83 #1B2983

triadic

#1B5D83 #831B5D #5D831B

tetradic

#1B5D83 #751B83 #83411B #29831B

square

#1B5D83 #751B83 #83411B #29831B

split-complementary

#1B5D83 #831B29 #83751B

monochromatic

#06151E #113950 #1B5D83 #2581B6 #41A1D8

Accessibility & contrast

On white

7.14

#1B5D83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#1B5D83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5D83

7.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5D83	#FFFFFF	#000000	##FFFFFF
##1B5D83	1.00	7.14	2.94	7.14
#FFFFFF	7.14	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B5D85

Deuteranopia (green-blind)

#3D5382

Tritanopia (blue-blind)

#00676A

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #1b5d83;
/* rgb */ color: rgb(27, 93, 131);
/* oklch */ color: oklch(45.6% 0.089 238.9);

Tailwind

colors: {
  custom: {
    50: '#688aa7',
    500: '#1b5d83',
    950: '#000000',
  },
}

SCSS

$custom: #1b5d83;
$custom-light: #688aa7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5d83",
  "rgb": {
    "r": 27,
    "g": 93,
    "b": 131
  },
  "hsl": {
    "h": 201.923,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.45628,
    "c": 0.08924,
    "h": 238.9
  },
  "luminance": 0.097
}

Semantic roles & 50–950 ramp

primary

#1B5D83

secondary

#B66D43

accent

#7D3FE9

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1B5D83

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

Preview Lab → · Contrast checker → · Palette generator →