#1B5490#1B5490

#1B5490 is a dark, moderate cyan. Relative luminance 0.086; OKLCH L 44.2% C 0.115 H 253.0°. Best body text is #FFFFFF at 7.73:1 contrast (WCAG AA passes).

Color values

HEX	#1B5490
RGB	rgb(27, 84, 144)
HSL	hsl(211, 68%, 34%)
HSV	hsv(211, 81%, 56%)
CMYK	cmyk(81.3%, 41.7%, 0%, 43.5%)
CIE-LAB	lab(35.18, 4.36, -38.31)
CIE-LCH	lch(35.18, 38.56, 276.49°)
OKLab	oklab(44.19% -0.0336 -0.1095)
OKLCH	oklch(44.19% 0.115 253)
XYZ	xyz(8.6545, 8.5862, 27.5813)
Luminance	0.0859 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5490 #90571B

analogous

#1B8E90 #1B5490 #1C1B90

triadic

#1B5490 #901B54 #54901B

tetradic

#1B5490 #901B8E #90571B #1B901C

square

#1B5490 #901B8E #90571B #1B901C

split-complementary

#1B5490 #901C1B #8E901B

monochromatic

#081829 #11365C #1B5490 #2572C4 #4991DD

Accessibility & contrast

On white

7.73

#1B5490 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#1B5490 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5490

7.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5490	#FFFFFF	#000000	##FFFFFF
##1B5490	1.00	7.73	2.72	7.73
#FFFFFF	7.73	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#375892

Deuteranopia (green-blind)

#234E8F

Tritanopia (blue-blind)

#00626B

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1b5490;
/* rgb */ color: rgb(27, 84, 144);
/* oklch */ color: oklch(44.2% 0.115 253.0);

Tailwind

colors: {
  custom: {
    50: '#6b83b1',
    500: '#1b5490',
    950: '#000000',
  },
}

SCSS

$custom: #1b5490;
$custom-light: #6b83b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5490",
  "rgb": {
    "r": 27,
    "g": 84,
    "b": 144
  },
  "hsl": {
    "h": 210.769,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.44191,
    "c": 0.11458,
    "h": 253
  },
  "luminance": 0.08587
}

Semantic roles & 50–950 ramp

primary

#1B5490

secondary

#BF8548

accent

#963DEB

background

#F6F8FA

surface

#ECEFF5

border

#C7CACF

text

#080A10

muted

#7A7C7F

Preview Lab

Preview with #1B5490

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

Preview Lab → · Contrast checker → · Palette generator →