#1B5191#1B5191

#1B5191 is a dark, moderate cyan. Relative luminance 0.082; OKLCH L 43.5% C 0.119 H 255.1°. Best body text is #FFFFFF at 7.98:1 contrast (WCAG AA passes).

Color values

HEX	#1B5191
RGB	rgb(27, 81, 145)
HSL	hsl(213, 69%, 34%)
HSV	hsv(213, 81%, 57%)
CMYK	cmyk(81.4%, 44.1%, 0%, 43.1%)
CIE-LAB	lab(34.32, 6.74, -40.29)
CIE-LCH	lch(34.32, 40.85, 279.50°)
OKLab	oklab(43.54% -0.0307 -0.1154)
OKLCH	oklch(43.54% 0.119 255.1)
XYZ	xyz(8.5034, 8.1612, 27.9097)
Luminance	0.0816 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5191 #915B1B

analogous

#1B8C91 #1B5191 #201B91

triadic

#1B5191 #911B51 #51911B

tetradic

#1B5191 #911B8C #915B1B #1B9120

square

#1B5191 #911B8C #915B1B #1B9120

split-complementary

#1B5191 #91201B #8C911B

monochromatic

#08172A #11345D #1B5191 #256EC5 #498DDD

Accessibility & contrast

On white

7.98

#1B5191 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#1B5191 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5191

7.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5191	#FFFFFF	#000000	##FFFFFF
##1B5191	1.00	7.98	2.63	7.98
#FFFFFF	7.98	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#315693

Deuteranopia (green-blind)

#1A4C90

Tritanopia (blue-blind)

#00606A

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1b5191;
/* rgb */ color: rgb(27, 81, 145);
/* oklch */ color: oklch(43.5% 0.119 255.1);

Tailwind

colors: {
  custom: {
    50: '#6b81b2',
    500: '#1b5191',
    950: '#000000',
  },
}

SCSS

$custom: #1b5191;
$custom-light: #6b81b2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5191",
  "rgb": {
    "r": 27,
    "g": 81,
    "b": 145
  },
  "hsl": {
    "h": 212.542,
    "s": 68.605,
    "l": 33.725
  },
  "oklch": {
    "l": 0.43543,
    "c": 0.11944,
    "h": 255.1
  },
  "luminance": 0.08162
}

Semantic roles & 50–950 ramp

primary

#1B5191

secondary

#BF8949

accent

#9B3CEB

background

#F6F7FB

surface

#ECEEF6

border

#C7C9D0

text

#080A11

muted

#7A7C80

Preview Lab

Preview with #1B5191

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

Preview Lab → · Contrast checker → · Palette generator →