#1B587F#1B587F

#1B587F is a dark, moderate cyan. Relative luminance 0.087; OKLCH L 44.1% C 0.088 H 241.4°. Best body text is #FFFFFF at 7.64:1 contrast (WCAG AA passes).

Color values

HEX	#1B587F
RGB	rgb(27, 88, 127)
HSL	hsl(203, 65%, 30%)
HSV	hsv(203, 79%, 50%)
CMYK	cmyk(78.7%, 30.7%, 0%, 50.2%)
CIE-LAB	lab(35.49, -4.91, -27.43)
CIE-LCH	lch(35.49, 27.86, 259.85°)
OKLab	oklab(44.13% -0.0424 -0.0776)
OKLCH	oklch(44.13% 0.088 241.4)
XYZ	xyz(7.7710, 8.7438, 21.3527)
Luminance	0.0874 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B587F #7F421B

analogous

#1B7F74 #1B587F #1B267F

triadic

#1B587F #7F1B58 #587F1B

tetradic

#1B587F #741B7F #7F421B #267F1B

square

#1B587F #741B7F #7F421B #267F1B

split-complementary

#1B587F #7F1B26 #7F741B

monochromatic

#06121A #10354D #1B587F #267BB1 #3E9BD6

Accessibility & contrast

On white

7.64

#1B587F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#1B587F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B587F

7.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B587F	#FFFFFF	#000000	##FFFFFF
##1B587F	1.00	7.64	2.75	7.64
#FFFFFF	7.64	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#465981

Deuteranopia (green-blind)

#384F7E

Tritanopia (blue-blind)

#006266

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1b587f;
/* rgb */ color: rgb(27, 88, 127);
/* oklch */ color: oklch(44.1% 0.088 241.4);

Tailwind

colors: {
  custom: {
    50: '#6787a4',
    500: '#1b587f',
    950: '#000000',
  },
}

SCSS

$custom: #1b587f;
$custom-light: #6787a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b587f",
  "rgb": {
    "r": 27,
    "g": 88,
    "b": 127
  },
  "hsl": {
    "h": 203.4,
    "s": 64.935,
    "l": 30.196
  },
  "oklch": {
    "l": 0.44126,
    "c": 0.08844,
    "h": 241.4
  },
  "luminance": 0.08745
}

Semantic roles & 50–950 ramp

primary

#1B587F

secondary

#B36F43

accent

#8140E8

background

#F6F8FA

surface

#EBEFF4

border

#C6CACE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1B587F

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

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