#1B5E83#1B5E83

#1B5E83 is a mid, moderate cyan. Relative luminance 0.099; OKLCH L 45.9% C 0.089 H 237.9°. Best body text is #FFFFFF at 7.06:1 contrast (WCAG AA passes).

Color values

HEX	#1B5E83
RGB	rgb(27, 94, 131)
HSL	hsl(201, 66%, 31%)
HSV	hsv(201, 79%, 51%)
CMYK	cmyk(79.4%, 28.2%, 0%, 48.6%)
CIE-LAB	lab(37.62, -7.09, -26.53)
CIE-LCH	lch(37.62, 27.46, 255.05°)
OKLab	oklab(45.88% -0.0471 -0.075)
OKLCH	oklch(45.88% 0.089 237.9)
XYZ	xyz(8.5498, 9.8761, 22.9240)
Luminance	0.0988 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5E83 #83401B

analogous

#1B8374 #1B5E83 #1B2A83

triadic

#1B5E83 #831B5E #5E831B

tetradic

#1B5E83 #741B83 #83401B #2A831B

square

#1B5E83 #741B83 #83401B #2A831B

split-complementary

#1B5E83 #831B2A #83741B

monochromatic

#06151E #113A50 #1B5E83 #2582B6 #41A2D8

Accessibility & contrast

On white

7.06

#1B5E83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#1B5E83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5E83

7.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5E83	#FFFFFF	#000000	##FFFFFF
##1B5E83	1.00	7.06	2.98	7.06
#FFFFFF	7.06	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C5E85

Deuteranopia (green-blind)

#3E5482

Tritanopia (blue-blind)

#00676B

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #1b5e83;
/* rgb */ color: rgb(27, 94, 131);
/* oklch */ color: oklch(45.9% 0.089 237.9);

Tailwind

colors: {
  custom: {
    50: '#688ba7',
    500: '#1b5e83',
    950: '#000000',
  },
}

SCSS

$custom: #1b5e83;
$custom-light: #688ba7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5e83",
  "rgb": {
    "r": 27,
    "g": 94,
    "b": 131
  },
  "hsl": {
    "h": 201.346,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.45883,
    "c": 0.08851,
    "h": 237.9
  },
  "luminance": 0.09877
}

Semantic roles & 50–950 ramp

primary

#1B5E83

secondary

#B66C43

accent

#7B3FE9

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#070C0F

muted

#7A7D7F

Preview Lab

Preview with #1B5E83

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

Preview Lab → · Contrast checker → · Palette generator →