#1B507C#1B507C

#1B507C is a dark, moderate cyan. Relative luminance 0.074; OKLCH L 41.9% C 0.092 H 247.5°. Best body text is #FFFFFF at 8.45:1 contrast (WCAG AA passes).

Color values

HEX	#1B507C
RGB	rgb(27, 80, 124)
HSL	hsl(207, 64%, 30%)
HSV	hsv(207, 78%, 49%)
CMYK	cmyk(78.2%, 35.5%, 0%, 51.4%)
CIE-LAB	lab(32.76, -0.99, -29.88)
CIE-LCH	lch(32.76, 29.89, 268.09°)
OKLab	oklab(41.92% -0.0352 -0.0849)
OKLCH	oklch(41.92% 0.092 247.5)
XYZ	xyz(6.9574, 7.4248, 20.1313)
Luminance	0.0743 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B507C #7C471B

analogous

#1B7C77 #1B507C #1B207C

triadic

#1B507C #7C1B50 #507C1B

tetradic

#1B507C #771B7C #7C471B #207C1B

square

#1B507C #771B7C #7C471B #207C1B

split-complementary

#1B507C #7C1B20 #7C771B

monochromatic

#051019 #10304A #1B507C #2670AE #3D90D5

Accessibility & contrast

On white

8.45

#1B507C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#1B507C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B507C

8.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B507C	#FFFFFF	#000000	##FFFFFF
##1B507C	1.00	8.45	2.49	8.45
#FFFFFF	8.45	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C527E

Deuteranopia (green-blind)

#2E497B

Tritanopia (blue-blind)

#005B60

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1b507c;
/* rgb */ color: rgb(27, 80, 124);
/* oklch */ color: oklch(41.9% 0.092 247.5);

Tailwind

colors: {
  custom: {
    50: '#6680a2',
    500: '#1b507c',
    950: '#000000',
  },
}

SCSS

$custom: #1b507c;
$custom-light: #6680a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1b507c",
  "rgb": {
    "r": 27,
    "g": 80,
    "b": 124
  },
  "hsl": {
    "h": 207.216,
    "s": 64.238,
    "l": 29.608
  },
  "oklch": {
    "l": 0.41917,
    "c": 0.09192,
    "h": 247.5
  },
  "luminance": 0.07426
}

Semantic roles & 50–950 ramp

primary

#1B507C

secondary

#B07443

accent

#8C41E7

background

#F6F7FA

surface

#EBEEF3

border

#C6C9CD

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1B507C

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

Preview Lab → · Contrast checker → · Palette generator →