#1B5F8E#1B5F8E

#1B5F8E is a mid, moderate cyan. Relative luminance 0.104; OKLCH L 46.8% C 0.101 H 243.9°. Best body text is #FFFFFF at 6.83:1 contrast (WCAG AA passes).

Color values

HEX	#1B5F8E
RGB	rgb(27, 95, 142)
HSL	hsl(205, 68%, 33%)
HSV	hsv(205, 81%, 56%)
CMYK	cmyk(81%, 33.1%, 0%, 44.3%)
CIE-LAB	lab(38.50, -3.47, -31.83)
CIE-LCH	lch(38.50, 32.02, 263.77°)
OKLab	oklab(46.76% -0.0443 -0.0904)
OKLCH	oklch(46.76% 0.101 243.9)
XYZ	xyz(9.4248, 10.3693, 27.0907)
Luminance	0.1037 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5F8E #8E4A1B

analogous

#1B8E83 #1B5F8E #1B258E

triadic

#1B5F8E #8E1B5F #5F8E1B

tetradic

#1B5F8E #831B8E #8E4A1B #258E1B

square

#1B5F8E #831B8E #8E4A1B #258E1B

split-complementary

#1B5F8E #8E1B25 #8E831B

monochromatic

#071A27 #113D5B #1B5F8E #2581C1 #479FDC

Accessibility & contrast

On white

6.83

#1B5F8E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#1B5F8E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B5F8E

6.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5F8E	#FFFFFF	#000000	##FFFFFF
##1B5F8E	1.00	6.83	3.07	6.83
#FFFFFF	6.83	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#496090

Deuteranopia (green-blind)

#39568D

Tritanopia (blue-blind)

#006B70

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #1b5f8e;
/* rgb */ color: rgb(27, 95, 142);
/* oklch */ color: oklch(46.8% 0.101 243.9);

Tailwind

colors: {
  custom: {
    50: '#6b8caf',
    500: '#1b5f8e',
    950: '#000000',
  },
}

SCSS

$custom: #1b5f8e;
$custom-light: #6b8caf;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5f8e",
  "rgb": {
    "r": 27,
    "g": 95,
    "b": 142
  },
  "hsl": {
    "h": 204.522,
    "s": 68.047,
    "l": 33.137
  },
  "oklch": {
    "l": 0.46763,
    "c": 0.10067,
    "h": 243.9
  },
  "luminance": 0.1037
}

Semantic roles & 50–950 ramp

primary

#1B5F8E

secondary

#BE7847

accent

#843DEB

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#080C10

muted

#7A7D7F

Preview Lab

Preview with #1B5F8E

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

Preview Lab → · Contrast checker → · Palette generator →