#1B508B#1B508B

#1B508B is a dark, moderate cyan. Relative luminance 0.078; OKLCH L 42.9% C 0.112 H 253.9°. Best body text is #FFFFFF at 8.18:1 contrast (WCAG AA passes).

Color values

HEX	#1B508B
RGB	rgb(27, 80, 139)
HSL	hsl(212, 67%, 33%)
HSV	hsv(212, 81%, 55%)
CMYK	cmyk(80.6%, 42.4%, 0%, 45.5%)
CIE-LAB	lab(33.63, 4.99, -37.72)
CIE-LCH	lch(33.63, 38.05, 277.54°)
OKLab	oklab(42.89% -0.0312 -0.1079)
OKLCH	oklch(42.89% 0.112 253.9)
XYZ	xyz(7.9791, 7.8335, 25.5126)
Luminance	0.0783 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B508B #8B561B

analogous

#1B888B #1B508B #1E1B8B

triadic

#1B508B #8B1B50 #508B1B

tetradic

#1B508B #8B1B88 #8B561B #1B8B1E

square

#1B508B #8B1B88 #8B561B #1B8B1E

split-complementary

#1B508B #8B1E1B #888B1B

monochromatic

#071525 #113358 #1B508B #256DBE #458CDB

Accessibility & contrast

On white

8.18

#1B508B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#1B508B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B508B

8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B508B	#FFFFFF	#000000	##FFFFFF
##1B508B	1.00	8.18	2.57	8.18
#FFFFFF	8.18	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#33558D

Deuteranopia (green-blind)

#204A8A

Tritanopia (blue-blind)

#005E66

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1b508b;
/* rgb */ color: rgb(27, 80, 139);
/* oklch */ color: oklch(42.9% 0.112 253.9);

Tailwind

colors: {
  custom: {
    50: '#6a80ad',
    500: '#1b508b',
    950: '#000000',
  },
}

SCSS

$custom: #1b508b;
$custom-light: #6a80ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1b508b",
  "rgb": {
    "r": 27,
    "g": 80,
    "b": 139
  },
  "hsl": {
    "h": 211.607,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.42891,
    "c": 0.11231,
    "h": 253.9
  },
  "luminance": 0.07834
}

Semantic roles & 50–950 ramp

primary

#1B508B

secondary

#BC8445

accent

#993DEA

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1B508B

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

Preview Lab → · Contrast checker → · Palette generator →