#1B5F8F#1B5F8F

#1B5F8F is a mid, moderate cyan. Relative luminance 0.104; OKLCH L 46.8% C 0.102 H 244.4°. Best body text is #FFFFFF at 6.82:1 contrast (WCAG AA passes).

Color values

HEX	#1B5F8F
RGB	rgb(27, 95, 143)
HSL	hsl(205, 68%, 33%)
HSV	hsv(205, 81%, 56%)
CMYK	cmyk(81.1%, 33.6%, 0%, 43.9%)
CIE-LAB	lab(38.55, -3.09, -32.35)
CIE-LCH	lch(38.55, 32.50, 264.55°)
OKLab	oklab(46.82% -0.044 -0.0919)
OKLCH	oklch(46.82% 0.102 244.4)
XYZ	xyz(9.5002, 10.3994, 27.4879)
Luminance	0.1040 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5F8F #8F4B1B

analogous

#1B8F85 #1B5F8F #1B258F

triadic

#1B5F8F #8F1B5F #5F8F1B

tetradic

#1B5F8F #851B8F #8F4B1B #258F1B

square

#1B5F8F #851B8F #8F4B1B #258F1B

split-complementary

#1B5F8F #8F1B25 #8F851B

monochromatic

#081B28 #113D5C #1B5F8F #2581C2 #489FDC

Accessibility & contrast

On white

6.82

#1B5F8F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#1B5F8F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B5F8F

6.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5F8F	#FFFFFF	#000000	##FFFFFF
##1B5F8F	1.00	6.82	3.08	6.82
#FFFFFF	6.82	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#496191

Deuteranopia (green-blind)

#38568E

Tritanopia (blue-blind)

#006B70

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #1b5f8f;
/* rgb */ color: rgb(27, 95, 143);
/* oklch */ color: oklch(46.8% 0.102 244.4);

Tailwind

colors: {
  custom: {
    50: '#6b8cb0',
    500: '#1b5f8f',
    950: '#000000',
  },
}

SCSS

$custom: #1b5f8f;
$custom-light: #6b8cb0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5f8f",
  "rgb": {
    "r": 27,
    "g": 95,
    "b": 143
  },
  "hsl": {
    "h": 204.828,
    "s": 68.235,
    "l": 33.333
  },
  "oklch": {
    "l": 0.46822,
    "c": 0.1019,
    "h": 244.4
  },
  "luminance": 0.10401
}

Semantic roles & 50–950 ramp

primary

#1B5F8F

secondary

#BE7948

accent

#853DEB

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#080C10

muted

#7A7D7F

Preview Lab

Preview with #1B5F8F

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

Preview Lab → · Contrast checker → · Palette generator →