#1B558A#1B558A

#1B558A is a dark, moderate cyan. Relative luminance 0.086; OKLCH L 44.0% C 0.105 H 250.0°. Best body text is #FFFFFF at 7.74:1 contrast (WCAG AA passes).

Color values

HEX	#1B558A
RGB	rgb(27, 85, 138)
HSL	hsl(209, 67%, 32%)
HSV	hsv(209, 80%, 54%)
CMYK	cmyk(80.4%, 38.4%, 0%, 45.9%)
CIE-LAB	lab(35.13, 1.31, -34.73)
CIE-LCH	lch(35.13, 34.75, 272.17°)
OKLab	oklab(44.04% -0.036 -0.099)
OKLCH	oklch(44.04% 0.105 250)
XYZ	xyz(8.2862, 8.5640, 25.2561)
Luminance	0.0857 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B558A #8A501B

analogous

#1B8A88 #1B558A #1B1D8A

triadic

#1B558A #8A1B55 #558A1B

tetradic

#1B558A #881B8A #8A501B #1D8A1B

square

#1B558A #881B8A #8A501B #1D8A1B

split-complementary

#1B558A #8A1B1D #8A881B

monochromatic

#071624 #113557 #1B558A #2575BD #4593DB

Accessibility & contrast

On white

7.74

#1B558A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#1B558A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B558A

7.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B558A	#FFFFFF	#000000	##FFFFFF
##1B558A	1.00	7.74	2.71	7.74
#FFFFFF	7.74	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C588C

Deuteranopia (green-blind)

#2B4E89

Tritanopia (blue-blind)

#006269

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1b558a;
/* rgb */ color: rgb(27, 85, 138);
/* oklch */ color: oklch(44.0% 0.105 250.0);

Tailwind

colors: {
  custom: {
    50: '#6a84ac',
    500: '#1b558a',
    950: '#000000',
  },
}

SCSS

$custom: #1b558a;
$custom-light: #6a84ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1b558a",
  "rgb": {
    "r": 27,
    "g": 85,
    "b": 138
  },
  "hsl": {
    "h": 208.649,
    "s": 67.273,
    "l": 32.353
  },
  "oklch": {
    "l": 0.44041,
    "c": 0.10536,
    "h": 250
  },
  "luminance": 0.08565
}

Semantic roles & 50–950 ramp

primary

#1B558A

secondary

#BC7E45

accent

#903EEA

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1B558A

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

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