#1B5186#1B5186

#1B5186 is a dark, moderate cyan. Relative luminance 0.078; OKLCH L 42.8% C 0.104 H 251.4°. Best body text is #FFFFFF at 8.18:1 contrast (WCAG AA passes).

Color values

HEX	#1B5186
RGB	rgb(27, 81, 134)
HSL	hsl(210, 66%, 32%)
HSV	hsv(210, 80%, 53%)
CMYK	cmyk(79.9%, 39.6%, 0%, 47.5%)
CIE-LAB	lab(33.64, 2.33, -34.64)
CIE-LCH	lch(33.64, 34.72, 273.85°)
OKLab	oklab(42.8% -0.0333 -0.0988)
OKLCH	oklch(42.8% 0.104 251.4)
XYZ	xyz(7.6959, 7.8382, 23.6570)
Luminance	0.0784 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5186 #86501B

analogous

#1B8686 #1B5186 #1B1B86

triadic

#1B5186 #861B51 #51861B

tetradic

#1B5186 #861B86 #86501B #1B861B

square

#1B5186 #861B86 #86501B #1B861B

split-complementary

#1B5186 #861B1B #86861B

monochromatic

#061320 #113253 #1B5186 #2570B9 #428ED9

Accessibility & contrast

On white

8.18

#1B5186 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#1B5186 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5186

8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5186	#FFFFFF	#000000	##FFFFFF
##1B5186	1.00	8.18	2.57	8.18
#FFFFFF	8.18	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#385488

Deuteranopia (green-blind)

#274B85

Tritanopia (blue-blind)

#005E65

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1b5186;
/* rgb */ color: rgb(27, 81, 134);
/* oklch */ color: oklch(42.8% 0.104 251.4);

Tailwind

colors: {
  custom: {
    50: '#6981a9',
    500: '#1b5186',
    950: '#000000',
  },
}

SCSS

$custom: #1b5186;
$custom-light: #6981a9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5186",
  "rgb": {
    "r": 27,
    "g": 81,
    "b": 134
  },
  "hsl": {
    "h": 209.72,
    "s": 66.46,
    "l": 31.569
  },
  "oklch": {
    "l": 0.42801,
    "c": 0.10431,
    "h": 251.4
  },
  "luminance": 0.07839
}

Semantic roles & 50–950 ramp

primary

#1B5186

secondary

#B97E44

accent

#933EE9

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1B5186

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

Preview Lab → · Contrast checker → · Palette generator →