#1B5587#1B5587

#1B5587 is a dark, moderate cyan. Relative luminance 0.085; OKLCH L 43.9% C 0.101 H 248.7°. Best body text is #FFFFFF at 7.79:1 contrast (WCAG AA passes).

Color values

HEX	#1B5587
RGB	rgb(27, 85, 135)
HSL	hsl(208, 67%, 32%)
HSV	hsv(208, 80%, 53%)
CMYK	cmyk(80%, 37%, 0%, 47.1%)
CIE-LAB	lab(34.96, 0.12, -33.17)
CIE-LCH	lch(34.96, 33.17, 270.21°)
OKLab	oklab(43.85% -0.0369 -0.0944)
OKLCH	oklch(43.85% 0.101 248.7)
XYZ	xyz(8.0720, 8.4783, 24.1280)
Luminance	0.0848 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5587 #874D1B

analogous

#1B8783 #1B5587 #1B1F87

triadic

#1B5587 #871B55 #55871B

tetradic

#1B5587 #831B87 #874D1B #1F871B

square

#1B5587 #831B87 #874D1B #1F871B

split-complementary

#1B5587 #871B1F #87831B

monochromatic

#071521 #113554 #1B5587 #2575BA #4394D9

Accessibility & contrast

On white

7.79

#1B5587 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#1B5587 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5587

7.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5587	#FFFFFF	#000000	##FFFFFF
##1B5587	1.00	7.79	2.70	7.79
#FFFFFF	7.79	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E5889

Deuteranopia (green-blind)

#2E4E86

Tritanopia (blue-blind)

#006167

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1b5587;
/* rgb */ color: rgb(27, 85, 135);
/* oklch */ color: oklch(43.9% 0.101 248.7);

Tailwind

colors: {
  custom: {
    50: '#6984aa',
    500: '#1b5587',
    950: '#000000',
  },
}

SCSS

$custom: #1b5587;
$custom-light: #6984aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5587",
  "rgb": {
    "r": 27,
    "g": 85,
    "b": 135
  },
  "hsl": {
    "h": 207.778,
    "s": 66.667,
    "l": 31.765
  },
  "oklch": {
    "l": 0.43851,
    "c": 0.10138,
    "h": 248.7
  },
  "luminance": 0.08479
}

Semantic roles & 50–950 ramp

primary

#1B5587

secondary

#BA7B44

accent

#8E3EEA

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1B5587

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

Preview Lab → · Contrast checker → · Palette generator →