#1B5391#1B5391

#1B5391 is a dark, moderate cyan. Relative luminance 0.085; OKLCH L 44.0% C 0.117 H 253.9°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#1B5391
RGB	rgb(27, 83, 145)
HSL	hsl(212, 69%, 34%)
HSV	hsv(212, 81%, 57%)
CMYK	cmyk(81.4%, 42.8%, 0%, 43.1%)
CIE-LAB	lab(34.93, 5.42, -39.31)
CIE-LCH	lch(34.93, 39.69, 277.85°)
OKLab	oklab(44.02% -0.0324 -0.1125)
OKLCH	oklch(44.02% 0.117 253.9)
XYZ	xyz(8.6542, 8.4628, 27.9599)
Luminance	0.0846 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5391 #91591B

analogous

#1B8E91 #1B5391 #1E1B91

triadic

#1B5391 #911B53 #53911B

tetradic

#1B5391 #911B8E #91591B #1B911E

square

#1B5391 #911B8E #91591B #1B911E

split-complementary

#1B5391 #911E1B #8E911B

monochromatic

#08182A #11355D #1B5391 #2571C5 #498FDD

Accessibility & contrast

On white

7.80

#1B5391 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#1B5391 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5391

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5391	#FFFFFF	#000000	##FFFFFF
##1B5391	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#345893

Deuteranopia (green-blind)

#1F4D90

Tritanopia (blue-blind)

#00626B

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1b5391;
/* rgb */ color: rgb(27, 83, 145);
/* oklch */ color: oklch(44.0% 0.117 253.9);

Tailwind

colors: {
  custom: {
    50: '#6b82b2',
    500: '#1b5391',
    950: '#000000',
  },
}

SCSS

$custom: #1b5391;
$custom-light: #6b82b2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5391",
  "rgb": {
    "r": 27,
    "g": 83,
    "b": 145
  },
  "hsl": {
    "h": 211.525,
    "s": 68.605,
    "l": 33.725
  },
  "oklch": {
    "l": 0.44019,
    "c": 0.11709,
    "h": 253.9
  },
  "luminance": 0.08464
}

Semantic roles & 50–950 ramp

primary

#1B5391

secondary

#BF8749

accent

#983CEB

background

#F6F7FB

surface

#ECEEF6

border

#C7C9D0

text

#080A11

muted

#7A7C80

Preview Lab

Preview with #1B5391

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

Preview Lab → · Contrast checker → · Palette generator →