#1B507D#1B507D

#1B507D is a dark, moderate cyan. Relative luminance 0.075; OKLCH L 42.0% C 0.093 H 248.0°. Best body text is #FFFFFF at 8.43:1 contrast (WCAG AA passes).

Color values

HEX	#1B507D
RGB	rgb(27, 80, 125)
HSL	hsl(208, 64%, 30%)
HSV	hsv(208, 78%, 49%)
CMYK	cmyk(78.4%, 36%, 0%, 51%)
CIE-LAB	lab(32.81, -0.60, -30.41)
CIE-LCH	lch(32.81, 30.42, 268.87°)
OKLab	oklab(41.98% -0.0349 -0.0864)
OKLCH	oklch(41.98% 0.093 248)
XYZ	xyz(7.0209, 7.4502, 20.4661)
Luminance	0.0745 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B507D #7D481B

analogous

#1B7D79 #1B507D #1B1F7D

triadic

#1B507D #7D1B50 #507D1B

tetradic

#1B507D #791B7D #7D481B #1F7D1B

square

#1B507D #791B7D #7D481B #1F7D1B

split-complementary

#1B507D #7D1B1F #7D791B

monochromatic

#051019 #10304B #1B507D #2670AF #3D8FD5

Accessibility & contrast

On white

8.43

#1B507D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#1B507D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B507D

8.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B507D	#FFFFFF	#000000	##FFFFFF
##1B507D	1.00	8.43	2.49	8.43
#FFFFFF	8.43	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B527F

Deuteranopia (green-blind)

#2D497C

Tritanopia (blue-blind)

#005B60

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1b507d;
/* rgb */ color: rgb(27, 80, 125);
/* oklch */ color: oklch(42.0% 0.093 248.0);

Tailwind

colors: {
  custom: {
    50: '#6780a3',
    500: '#1b507d',
    950: '#000000',
  },
}

SCSS

$custom: #1b507d;
$custom-light: #6780a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b507d",
  "rgb": {
    "r": 27,
    "g": 80,
    "b": 125
  },
  "hsl": {
    "h": 207.551,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.41979,
    "c": 0.09324,
    "h": 248
  },
  "luminance": 0.07451
}

Semantic roles & 50–950 ramp

primary

#1B507D

secondary

#B17543

accent

#8D40E7

background

#F6F7FA

surface

#EBEEF3

border

#C6C9CD

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1B507D

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

Preview Lab → · Contrast checker → · Palette generator →