#1B5280#1B5280

#1B5280 is a dark, moderate cyan. Relative luminance 0.078; OKLCH L 42.7% C 0.095 H 247.8°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#1B5280
RGB	rgb(27, 82, 128)
HSL	hsl(207, 65%, 30%)
HSV	hsv(207, 79%, 50%)
CMYK	cmyk(78.9%, 35.9%, 0%, 49.8%)
CIE-LAB	lab(33.62, -0.71, -30.99)
CIE-LCH	lch(33.62, 31.00, 268.69°)
OKLab	oklab(42.67% -0.036 -0.0881)
OKLCH	oklch(42.67% 0.095 247.8)
XYZ	xyz(7.3641, 7.8252, 21.5402)
Luminance	0.0783 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5280 #80491B

analogous

#1B807B #1B5280 #1B1F80

triadic

#1B5280 #801B52 #52801B

tetradic

#1B5280 #7B1B80 #80491B #1F801B

square

#1B5280 #7B1B80 #80491B #1F801B

split-complementary

#1B5280 #801B1F #807B1B

monochromatic

#06111B #10324D #1B5280 #2672B3 #3F91D6

Accessibility & contrast

On white

8.19

#1B5280 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#1B5280 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5280

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5280	#FFFFFF	#000000	##FFFFFF
##1B5280	1.00	8.19	2.57	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D5482

Deuteranopia (green-blind)

#2E4B7F

Tritanopia (blue-blind)

#005D63

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1b5280;
/* rgb */ color: rgb(27, 82, 128);
/* oklch */ color: oklch(42.7% 0.095 247.8);

Tailwind

colors: {
  custom: {
    50: '#6782a5',
    500: '#1b5280',
    950: '#000000',
  },
}

SCSS

$custom: #1b5280;
$custom-light: #6782a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5280",
  "rgb": {
    "r": 27,
    "g": 82,
    "b": 128
  },
  "hsl": {
    "h": 207.327,
    "s": 65.161,
    "l": 30.392
  },
  "oklch": {
    "l": 0.42667,
    "c": 0.09519,
    "h": 247.8
  },
  "luminance": 0.07826
}

Semantic roles & 50–950 ramp

primary

#1B5280

secondary

#B47643

accent

#8C40E8

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1B5280

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

Preview Lab → · Contrast checker → · Palette generator →