#1B507F#1B507F

#1B507F is a dark, moderate cyan. Relative luminance 0.075; OKLCH L 42.1% C 0.096 H 249.0°. Best body text is #FFFFFF at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#1B507F
RGB	rgb(27, 80, 127)
HSL	hsl(208, 65%, 30%)
HSV	hsv(208, 79%, 50%)
CMYK	cmyk(78.7%, 37%, 0%, 50.2%)
CIE-LAB	lab(32.92, 0.19, -31.47)
CIE-LCH	lch(32.92, 31.47, 270.35°)
OKLab	oklab(42.1% -0.0343 -0.0896)
OKLCH	oklch(42.1% 0.096 249)
XYZ	xyz(7.1500, 7.5018, 21.1457)
Luminance	0.0750 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B507F #7F4A1B

analogous

#1B7F7C #1B507F #1B1E7F

triadic

#1B507F #7F1B50 #507F1B

tetradic

#1B507F #7C1B7F #7F4A1B #1E7F1B

square

#1B507F #7C1B7F #7F4A1B #1E7F1B

split-complementary

#1B507F #7F1B1E #7F7C1B

monochromatic

#06101A #10304D #1B507F #2670B1 #3E8FD6

Accessibility & contrast

On white

8.40

#1B507F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#1B507F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B507F

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B507F	#FFFFFF	#000000	##FFFFFF
##1B507F	1.00	8.40	2.50	8.40
#FFFFFF	8.40	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A5281

Deuteranopia (green-blind)

#2C497E

Tritanopia (blue-blind)

#005B61

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1b507f;
/* rgb */ color: rgb(27, 80, 127);
/* oklch */ color: oklch(42.1% 0.096 249.0);

Tailwind

colors: {
  custom: {
    50: '#6780a4',
    500: '#1b507f',
    950: '#000000',
  },
}

SCSS

$custom: #1b507f;
$custom-light: #6780a4;
$custom-dark: #000000;

JSON

{
  "hex": "#1b507f",
  "rgb": {
    "r": 27,
    "g": 80,
    "b": 127
  },
  "hsl": {
    "h": 208.2,
    "s": 64.935,
    "l": 30.196
  },
  "oklch": {
    "l": 0.42104,
    "c": 0.09591,
    "h": 249
  },
  "luminance": 0.07503
}

Semantic roles & 50–950 ramp

primary

#1B507F

secondary

#B37843

accent

#8F40E8

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1B507F

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

Preview Lab → · Contrast checker → · Palette generator →