#1B5C85#1B5C85

#1B5C85 is a mid, moderate cyan. Relative luminance 0.096; OKLCH L 45.5% C 0.092 H 241.3°. Best body text is #FFFFFF at 7.20:1 contrast (WCAG AA passes).

Color values

HEX	#1B5C85
RGB	rgb(27, 92, 133)
HSL	hsl(203, 66%, 31%)
HSV	hsv(203, 80%, 52%)
CMYK	cmyk(79.7%, 30.8%, 0%, 47.8%)
CIE-LAB	lab(37.08, -5.09, -28.60)
CIE-LCH	lch(37.08, 29.05, 259.91°)
OKLab	oklab(45.49% -0.0444 -0.081)
OKLCH	oklch(45.49% 0.092 241.3)
XYZ	xyz(8.5111, 9.5797, 23.5863)
Luminance	0.0958 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5C85 #85441B

analogous

#1B8579 #1B5C85 #1B2785

triadic

#1B5C85 #851B5C #5C851B

tetradic

#1B5C85 #791B85 #85441B #27851B

square

#1B5C85 #791B85 #85441B #27851B

split-complementary

#1B5C85 #851B27 #85791B

monochromatic

#06161F #113952 #1B5C85 #257FB8 #429ED9

Accessibility & contrast

On white

7.20

#1B5C85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#1B5C85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5C85

7.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5C85	#FFFFFF	#000000	##FFFFFF
##1B5C85	1.00	7.20	2.92	7.20
#FFFFFF	7.20	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#495D87

Deuteranopia (green-blind)

#3A5384

Tritanopia (blue-blind)

#00666A

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1b5c85;
/* rgb */ color: rgb(27, 92, 133);
/* oklch */ color: oklch(45.5% 0.092 241.3);

Tailwind

colors: {
  custom: {
    50: '#698aa8',
    500: '#1b5c85',
    950: '#000000',
  },
}

SCSS

$custom: #1b5c85;
$custom-light: #698aa8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5c85",
  "rgb": {
    "r": 27,
    "g": 92,
    "b": 133
  },
  "hsl": {
    "h": 203.208,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.45487,
    "c": 0.09235,
    "h": 241.3
  },
  "luminance": 0.09581
}

Semantic roles & 50–950 ramp

primary

#1B5C85

secondary

#B87144

accent

#813FE9

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #1B5C85

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

Preview Lab → · Contrast checker → · Palette generator →