#1B5F8A#1B5F8A

#1B5F8A is a mid, moderate cyan. Relative luminance 0.103; OKLCH L 46.5% C 0.096 H 241.6°. Best body text is #FFFFFF at 6.88:1 contrast (WCAG AA passes).

Color values

HEX	#1B5F8A
RGB	rgb(27, 95, 138)
HSL	hsl(203, 67%, 32%)
HSV	hsv(203, 80%, 54%)
CMYK	cmyk(80.4%, 31.2%, 0%, 45.9%)
CIE-LAB	lab(38.29, -5.02, -29.74)
CIE-LCH	lch(38.29, 30.16, 260.42°)
OKLab	oklab(46.53% -0.0457 -0.0843)
OKLCH	oklch(46.53% 0.096 241.6)
XYZ	xyz(9.1298, 10.2513, 25.5373)
Luminance	0.1025 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5F8A #8A461B

analogous

#1B8A7D #1B5F8A #1B288A

triadic

#1B5F8A #8A1B5F #5F8A1B

tetradic

#1B5F8A #7D1B8A #8A461B #288A1B

square

#1B5F8A #7D1B8A #8A461B #288A1B

split-complementary

#1B5F8A #8A1B28 #8A7D1B

monochromatic

#071924 #113C57 #1B5F8A #2582BD #45A1DB

Accessibility & contrast

On white

6.88

#1B5F8A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#1B5F8A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B5F8A

6.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5F8A	#FFFFFF	#000000	##FFFFFF
##1B5F8A	1.00	6.88	3.05	6.88
#FFFFFF	6.88	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B608C

Deuteranopia (green-blind)

#3C5689

Tritanopia (blue-blind)

#006A6E

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #1b5f8a;
/* rgb */ color: rgb(27, 95, 138);
/* oklch */ color: oklch(46.5% 0.096 241.6);

Tailwind

colors: {
  custom: {
    50: '#6a8cac',
    500: '#1b5f8a',
    950: '#000000',
  },
}

SCSS

$custom: #1b5f8a;
$custom-light: #6a8cac;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5f8a",
  "rgb": {
    "r": 27,
    "g": 95,
    "b": 138
  },
  "hsl": {
    "h": 203.243,
    "s": 67.273,
    "l": 32.353
  },
  "oklch": {
    "l": 0.4653,
    "c": 0.09583,
    "h": 241.6
  },
  "luminance": 0.10252
}

Semantic roles & 50–950 ramp

primary

#1B5F8A

secondary

#BC7345

accent

#803EEA

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#070C10

muted

#7A7D7F

Preview Lab

Preview with #1B5F8A

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

Preview Lab → · Contrast checker → · Palette generator →