#1B5B85#1B5B85

#1B5B85 is a mid, moderate cyan. Relative luminance 0.094; OKLCH L 45.2% C 0.093 H 242.3°. Best body text is #FFFFFF at 7.29:1 contrast (WCAG AA passes).

Color values

HEX	#1B5B85
RGB	rgb(27, 91, 133)
HSL	hsl(204, 66%, 31%)
HSV	hsv(204, 80%, 52%)
CMYK	cmyk(79.7%, 31.6%, 0%, 47.8%)
CIE-LAB	lab(36.76, -4.47, -29.10)
CIE-LCH	lch(36.76, 29.45, 261.28°)
OKLab	oklab(45.23% -0.0434 -0.0825)
OKLCH	oklch(45.23% 0.093 242.3)
XYZ	xyz(8.4251, 9.4076, 23.5576)
Luminance	0.0941 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5B85 #85451B

analogous

#1B857A #1B5B85 #1B2685

triadic

#1B5B85 #851B5B #5B851B

tetradic

#1B5B85 #7A1B85 #85451B #26851B

square

#1B5B85 #7A1B85 #85451B #26851B

split-complementary

#1B5B85 #851B26 #857A1B

monochromatic

#06151F #113852 #1B5B85 #257EB8 #429DD9

Accessibility & contrast

On white

7.29

#1B5B85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#1B5B85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5B85

7.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5B85	#FFFFFF	#000000	##FFFFFF
##1B5B85	1.00	7.29	2.88	7.29
#FFFFFF	7.29	1.00	21.00	1.00
#000000	2.88	21.00	1.00	21.00
##FFFFFF	7.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#475C87

Deuteranopia (green-blind)

#395284

Tritanopia (blue-blind)

#00656A

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1b5b85;
/* rgb */ color: rgb(27, 91, 133);
/* oklch */ color: oklch(45.2% 0.093 242.3);

Tailwind

colors: {
  custom: {
    50: '#6989a8',
    500: '#1b5b85',
    950: '#000000',
  },
}

SCSS

$custom: #1b5b85;
$custom-light: #6989a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5b85",
  "rgb": {
    "r": 27,
    "g": 91,
    "b": 133
  },
  "hsl": {
    "h": 203.774,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.45233,
    "c": 0.09318,
    "h": 242.3
  },
  "luminance": 0.09409
}

Semantic roles & 50–950 ramp

primary

#1B5B85

secondary

#B87244

accent

#823FE9

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1B5B85

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

Preview Lab → · Contrast checker → · Palette generator →