#1B6388#1B6388

#1B6388 is a mid, moderate cyan. Relative luminance 0.109; OKLCH L 47.4% C 0.091 H 236.3°. Best body text is #FFFFFF at 6.59:1 contrast (WCAG AA passes).

Color values

HEX	#1B6388
RGB	rgb(27, 99, 136)
HSL	hsl(200, 67%, 32%)
HSV	hsv(200, 80%, 53%)
CMYK	cmyk(80.1%, 27.2%, 0%, 46.7%)
CIE-LAB	lab(39.47, -8.22, -26.68)
CIE-LCH	lch(39.47, 27.92, 252.87°)
OKLab	oklab(47.43% -0.0503 -0.0753)
OKLCH	oklch(47.43% 0.091 236.3)
XYZ	xyz(9.3560, 10.9331, 24.9050)
Luminance	0.1093 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B6388 #88401B

analogous

#1B8877 #1B6388 #1B2D88

triadic

#1B6388 #881B63 #63881B

tetradic

#1B6388 #771B88 #88401B #2D881B

square

#1B6388 #771B88 #88401B #2D881B

split-complementary

#1B6388 #881B2D #88771B

monochromatic

#071922 #113E55 #1B6388 #2588BB #44A7DA

Accessibility & contrast

On white

6.59

#1B6388 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#1B6388 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B6388

6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B6388	#FFFFFF	#000000	##FFFFFF
##1B6388	1.00	6.59	3.19	6.59
#FFFFFF	6.59	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#51638A

Deuteranopia (green-blind)

#425887

Tritanopia (blue-blind)

#006D70

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #1b6388;
/* rgb */ color: rgb(27, 99, 136);
/* oklch */ color: oklch(47.4% 0.091 236.3);

Tailwind

colors: {
  custom: {
    50: '#6a8fab',
    500: '#1b6388',
    950: '#000000',
  },
}

SCSS

$custom: #1b6388;
$custom-light: #6a8fab;
$custom-dark: #000000;

JSON

{
  "hex": "#1b6388",
  "rgb": {
    "r": 27,
    "g": 99,
    "b": 136
  },
  "hsl": {
    "h": 200.367,
    "s": 66.871,
    "l": 31.961
  },
  "oklch": {
    "l": 0.47433,
    "c": 0.09059,
    "h": 236.3
  },
  "luminance": 0.10934
}

Semantic roles & 50–950 ramp

primary

#1B6388

secondary

#BB6C44

accent

#783EEA

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#070C10

muted

#7A7D7F

Preview Lab

Preview with #1B6388

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

Preview Lab → · Contrast checker → · Palette generator →