#1B5083#1B5083

#1B5083 is a dark, moderate cyan. Relative luminance 0.076; OKLCH L 42.4% C 0.101 H 250.9°. Best body text is #FFFFFF at 8.33:1 contrast (WCAG AA passes).

Color values

HEX	#1B5083
RGB	rgb(27, 80, 131)
HSL	hsl(209, 66%, 31%)
HSV	hsv(209, 79%, 51%)
CMYK	cmyk(79.4%, 38.9%, 0%, 48.6%)
CIE-LAB	lab(33.15, 1.79, -33.58)
CIE-LCH	lch(33.15, 33.62, 273.05°)
OKLab	oklab(42.36% -0.0332 -0.0957)
OKLCH	oklch(42.36% 0.101 250.9)
XYZ	xyz(7.4158, 7.6082, 22.5460)
Luminance	0.0761 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5083 #834E1B

analogous

#1B8382 #1B5083 #1B1C83

triadic

#1B5083 #831B50 #50831B

tetradic

#1B5083 #821B83 #834E1B #1C831B

square

#1B5083 #821B83 #834E1B #1C831B

split-complementary

#1B5083 #831B1C #83821B

monochromatic

#06121E #113150 #1B5083 #256FB6 #418ED8

Accessibility & contrast

On white

8.33

#1B5083 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#1B5083 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5083

8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5083	#FFFFFF	#000000	##FFFFFF
##1B5083	1.00	8.33	2.52	8.33
#FFFFFF	8.33	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#385385

Deuteranopia (green-blind)

#284A82

Tritanopia (blue-blind)

#005C63

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1b5083;
/* rgb */ color: rgb(27, 80, 131);
/* oklch */ color: oklch(42.4% 0.101 250.9);

Tailwind

colors: {
  custom: {
    50: '#6880a7',
    500: '#1b5083',
    950: '#000000',
  },
}

SCSS

$custom: #1b5083;
$custom-light: #6880a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5083",
  "rgb": {
    "r": 27,
    "g": 80,
    "b": 131
  },
  "hsl": {
    "h": 209.423,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.4236,
    "c": 0.10131,
    "h": 250.9
  },
  "luminance": 0.07609
}

Semantic roles & 50–950 ramp

primary

#1B5083

secondary

#B67C43

accent

#923FE9

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1B5083

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

Preview Lab → · Contrast checker → · Palette generator →