#1B5185#1B5185

#1B5185 is a dark, moderate cyan. Relative luminance 0.078; OKLCH L 42.7% C 0.103 H 250.9°. Best body text is #FFFFFF at 8.20:1 contrast (WCAG AA passes).

Color values

HEX	#1B5185
RGB	rgb(27, 81, 133)
HSL	hsl(209, 66%, 31%)
HSV	hsv(209, 80%, 52%)
CMYK	cmyk(79.7%, 39.1%, 0%, 47.8%)
CIE-LAB	lab(33.58, 1.93, -34.12)
CIE-LCH	lch(33.58, 34.18, 273.24°)
OKLab	oklab(42.74% -0.0336 -0.0973)
OKLCH	oklch(42.74% 0.103 250.9)
XYZ	xyz(7.6265, 7.8104, 23.2914)
Luminance	0.0781 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5185 #854F1B

analogous

#1B8584 #1B5185 #1B1C85

triadic

#1B5185 #851B51 #51851B

tetradic

#1B5185 #841B85 #854F1B #1C851B

square

#1B5185 #841B85 #854F1B #1C851B

split-complementary

#1B5185 #851B1C #85841B

monochromatic

#06131F #113252 #1B5185 #2570B8 #428FD9

Accessibility & contrast

On white

8.20

#1B5185 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#1B5185 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5185

8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5185	#FFFFFF	#000000	##FFFFFF
##1B5185	1.00	8.20	2.56	8.20
#FFFFFF	8.20	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#385487

Deuteranopia (green-blind)

#284B84

Tritanopia (blue-blind)

#005D64

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1b5185;
/* rgb */ color: rgb(27, 81, 133);
/* oklch */ color: oklch(42.7% 0.103 250.9);

Tailwind

colors: {
  custom: {
    50: '#6881a9',
    500: '#1b5185',
    950: '#000000',
  },
}

SCSS

$custom: #1b5185;
$custom-light: #6881a9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5185",
  "rgb": {
    "r": 27,
    "g": 81,
    "b": 133
  },
  "hsl": {
    "h": 209.434,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.42736,
    "c": 0.10294,
    "h": 250.9
  },
  "luminance": 0.07811
}

Semantic roles & 50–950 ramp

primary

#1B5185

secondary

#B87D44

accent

#923FE9

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1B5185

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

Preview Lab → · Contrast checker → · Palette generator →