#1B588E#1B588E

#1B588E is a mid, moderate cyan. Relative luminance 0.092; OKLCH L 45.0% C 0.107 H 249.4°. Best body text is #FFFFFF at 7.41:1 contrast (WCAG AA passes).

Color values

HEX	#1B588E
RGB	rgb(27, 88, 142)
HSL	hsl(208, 68%, 33%)
HSV	hsv(208, 81%, 56%)
CMYK	cmyk(81%, 38%, 0%, 44.3%)
CIE-LAB	lab(36.30, 0.96, -35.31)
CIE-LCH	lch(36.30, 35.32, 271.56°)
OKLab	oklab(45.03% -0.0377 -0.1007)
OKLCH	oklch(45.03% 0.108 249.4)
XYZ	xyz(8.8223, 9.1644, 26.8899)
Luminance	0.0916 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B588E #8E511B

analogous

#1B8E8A #1B588E #1B1E8E

triadic

#1B588E #8E1B58 #588E1B

tetradic

#1B588E #8A1B8E #8E511B #1E8E1B

square

#1B588E #8A1B8E #8E511B #1E8E1B

split-complementary

#1B588E #8E1B1E #8E8A1B

monochromatic

#071827 #11385B #1B588E #2578C1 #4796DC

Accessibility & contrast

On white

7.41

#1B588E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#1B588E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B588E

7.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B588E	#FFFFFF	#000000	##FFFFFF
##1B588E	1.00	7.41	2.83	7.41
#FFFFFF	7.41	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F5B90

Deuteranopia (green-blind)

#2D518D

Tritanopia (blue-blind)

#00656C

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1b588e;
/* rgb */ color: rgb(27, 88, 142);
/* oklch */ color: oklch(45.0% 0.107 249.4);

Tailwind

colors: {
  custom: {
    50: '#6a86af',
    500: '#1b588e',
    950: '#000000',
  },
}

SCSS

$custom: #1b588e;
$custom-light: #6a86af;
$custom-dark: #000000;

JSON

{
  "hex": "#1b588e",
  "rgb": {
    "r": 27,
    "g": 88,
    "b": 142
  },
  "hsl": {
    "h": 208.174,
    "s": 68.047,
    "l": 33.137
  },
  "oklch": {
    "l": 0.45032,
    "c": 0.1075,
    "h": 249.4
  },
  "luminance": 0.09165
}

Semantic roles & 50–950 ramp

primary

#1B588E

secondary

#BE7F47

accent

#8F3DEB

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#080B10

muted

#7A7C7F

Preview Lab

Preview with #1B588E

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

Preview Lab → · Contrast checker → · Palette generator →