#1B5384#1B5384

#1B5384 is a dark, moderate cyan. Relative luminance 0.081; OKLCH L 43.2% C 0.099 H 248.9°. Best body text is #FFFFFF at 8.02:1 contrast (WCAG AA passes).

Color values

HEX	#1B5384
RGB	rgb(27, 83, 132)
HSL	hsl(208, 66%, 31%)
HSV	hsv(208, 80%, 52%)
CMYK	cmyk(79.5%, 37.1%, 0%, 48.2%)
CIE-LAB	lab(34.16, 0.23, -32.60)
CIE-LCH	lch(34.16, 32.60, 270.40°)
OKLab	oklab(43.17% -0.0358 -0.0928)
OKLCH	oklch(43.17% 0.099 248.9)
XYZ	xyz(7.7085, 8.0846, 22.9795)
Luminance	0.0809 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5384 #844C1B

analogous

#1B8480 #1B5384 #1B1E84

triadic

#1B5384 #841B53 #53841B

tetradic

#1B5384 #801B84 #844C1B #1E841B

square

#1B5384 #801B84 #844C1B #1E841B

split-complementary

#1B5384 #841B1E #84801B

monochromatic

#06131E #113351 #1B5384 #2573B7 #4192D8

Accessibility & contrast

On white

8.02

#1B5384 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#1B5384 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5384

8.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5384	#FFFFFF	#000000	##FFFFFF
##1B5384	1.00	8.02	2.62	8.02
#FFFFFF	8.02	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C5686

Deuteranopia (green-blind)

#2D4C83

Tritanopia (blue-blind)

#005F65

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1b5384;
/* rgb */ color: rgb(27, 83, 132);
/* oklch */ color: oklch(43.2% 0.099 248.9);

Tailwind

colors: {
  custom: {
    50: '#6883a8',
    500: '#1b5384',
    950: '#000000',
  },
}

SCSS

$custom: #1b5384;
$custom-light: #6883a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5384",
  "rgb": {
    "r": 27,
    "g": 83,
    "b": 132
  },
  "hsl": {
    "h": 208,
    "s": 66.038,
    "l": 31.176
  },
  "oklch": {
    "l": 0.43167,
    "c": 0.09947,
    "h": 248.9
  },
  "luminance": 0.08085
}

Semantic roles & 50–950 ramp

primary

#1B5384

secondary

#B77A43

accent

#8E3FE9

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1B5384

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

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