#1B5987#1B5987

#1B5987 is a dark, moderate cyan. Relative luminance 0.091; OKLCH L 44.8% C 0.097 H 245.3°. Best body text is #FFFFFF at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#1B5987
RGB	rgb(27, 89, 135)
HSL	hsl(206, 67%, 32%)
HSV	hsv(206, 80%, 53%)
CMYK	cmyk(80%, 34.1%, 0%, 47.1%)
CIE-LAB	lab(36.23, -2.43, -31.16)
CIE-LCH	lch(36.23, 31.26, 265.54°)
OKLab	oklab(44.85% -0.0407 -0.0885)
OKLCH	oklch(44.85% 0.097 245.3)
XYZ	xyz(8.3959, 9.1260, 24.2360)
Luminance	0.0913 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5987 #87491B

analogous

#1B877F #1B5987 #1B2387

triadic

#1B5987 #871B59 #59871B

tetradic

#1B5987 #7F1B87 #87491B #23871B

square

#1B5987 #7F1B87 #87491B #23871B

split-complementary

#1B5987 #871B23 #877F1B

monochromatic

#071621 #113754 #1B5987 #257BBA #4399D9

Accessibility & contrast

On white

7.43

#1B5987 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#1B5987 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5987

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5987	#FFFFFF	#000000	##FFFFFF
##1B5987	1.00	7.43	2.83	7.43
#FFFFFF	7.43	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#445B89

Deuteranopia (green-blind)

#345186

Tritanopia (blue-blind)

#00646A

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1b5987;
/* rgb */ color: rgb(27, 89, 135);
/* oklch */ color: oklch(44.8% 0.097 245.3);

Tailwind

colors: {
  custom: {
    50: '#6987aa',
    500: '#1b5987',
    950: '#000000',
  },
}

SCSS

$custom: #1b5987;
$custom-light: #6987aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5987",
  "rgb": {
    "r": 27,
    "g": 89,
    "b": 135
  },
  "hsl": {
    "h": 205.556,
    "s": 66.667,
    "l": 31.765
  },
  "oklch": {
    "l": 0.44848,
    "c": 0.09744,
    "h": 245.3
  },
  "luminance": 0.09127
}

Semantic roles & 50–950 ramp

primary

#1B5987

secondary

#BA7644

accent

#873EEA

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070B10

muted

#7A7C7F

Preview Lab

Preview with #1B5987

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

Preview Lab → · Contrast checker → · Palette generator →