#1B5387#1B5387

#1B5387 is a dark, moderate cyan. Relative luminance 0.082; OKLCH L 43.4% C 0.103 H 250.3°. Best body text is #FFFFFF at 7.97:1 contrast (WCAG AA passes).

Color values

HEX	#1B5387
RGB	rgb(27, 83, 135)
HSL	hsl(209, 67%, 32%)
HSV	hsv(209, 80%, 53%)
CMYK	cmyk(80%, 38.5%, 0%, 47.1%)
CIE-LAB	lab(34.33, 1.42, -34.16)
CIE-LCH	lch(34.33, 34.19, 272.38°)
OKLab	oklab(43.36% -0.035 -0.0974)
OKLCH	oklch(43.36% 0.103 250.3)
XYZ	xyz(7.9168, 8.1679, 24.0763)
Luminance	0.0817 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5387 #874F1B

analogous

#1B8785 #1B5387 #1B1D87

triadic

#1B5387 #871B53 #53871B

tetradic

#1B5387 #851B87 #874F1B #1D871B

square

#1B5387 #851B87 #874F1B #1D871B

split-complementary

#1B5387 #871B1D #87851B

monochromatic

#071421 #113454 #1B5387 #2572BA #4391D9

Accessibility & contrast

On white

7.97

#1B5387 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#1B5387 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5387

7.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5387	#FFFFFF	#000000	##FFFFFF
##1B5387	1.00	7.97	2.63	7.97
#FFFFFF	7.97	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B5689

Deuteranopia (green-blind)

#2A4C86

Tritanopia (blue-blind)

#005F66

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1b5387;
/* rgb */ color: rgb(27, 83, 135);
/* oklch */ color: oklch(43.4% 0.103 250.3);

Tailwind

colors: {
  custom: {
    50: '#6983aa',
    500: '#1b5387',
    950: '#000000',
  },
}

SCSS

$custom: #1b5387;
$custom-light: #6983aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5387",
  "rgb": {
    "r": 27,
    "g": 83,
    "b": 135
  },
  "hsl": {
    "h": 208.889,
    "s": 66.667,
    "l": 31.765
  },
  "oklch": {
    "l": 0.43357,
    "c": 0.10349,
    "h": 250.3
  },
  "luminance": 0.08169
}

Semantic roles & 50–950 ramp

primary

#1B5387

secondary

#BA7D44

accent

#913EEA

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1B5387

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

Preview Lab → · Contrast checker → · Palette generator →