#1B587D#1B587D

#1B587D is a dark, moderate cyan. Relative luminance 0.087; OKLCH L 44.0% C 0.086 H 240.0°. Best body text is #FFFFFF at 7.67:1 contrast (WCAG AA passes).

Color values

HEX	#1B587D
RGB	rgb(27, 88, 125)
HSL	hsl(203, 64%, 30%)
HSV	hsv(203, 78%, 49%)
CMYK	cmyk(78.4%, 29.6%, 0%, 51%)
CIE-LAB	lab(35.38, -5.68, -26.36)
CIE-LCH	lch(35.38, 26.96, 257.83°)
OKLab	oklab(44.01% -0.043 -0.0745)
OKLCH	oklch(44.01% 0.086 240)
XYZ	xyz(7.6419, 8.6922, 20.6731)
Luminance	0.0869 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B587D #7D401B

analogous

#1B7D71 #1B587D #1B277D

triadic

#1B587D #7D1B58 #587D1B

tetradic

#1B587D #711B7D #7D401B #277D1B

square

#1B587D #711B7D #7D401B #277D1B

split-complementary

#1B587D #7D1B27 #7D711B

monochromatic

#051219 #10354B #1B587D #267BAF #3D9CD5

Accessibility & contrast

On white

7.67

#1B587D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#1B587D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B587D

7.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B587D	#FFFFFF	#000000	##FFFFFF
##1B587D	1.00	7.67	2.74	7.67
#FFFFFF	7.67	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#47587F

Deuteranopia (green-blind)

#394F7C

Tritanopia (blue-blind)

#006165

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1b587d;
/* rgb */ color: rgb(27, 88, 125);
/* oklch */ color: oklch(44.0% 0.086 240.0);

Tailwind

colors: {
  custom: {
    50: '#6787a3',
    500: '#1b587d',
    950: '#000000',
  },
}

SCSS

$custom: #1b587d;
$custom-light: #6787a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b587d",
  "rgb": {
    "r": 27,
    "g": 88,
    "b": 125
  },
  "hsl": {
    "h": 202.653,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.44012,
    "c": 0.08606,
    "h": 240
  },
  "luminance": 0.08693
}

Semantic roles & 50–950 ramp

primary

#1B587D

secondary

#B16C43

accent

#7F40E7

background

#F6F8FA

surface

#EBEFF3

border

#C6CACD

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1B587D

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

Preview Lab → · Contrast checker → · Palette generator →