#1B528D#1B528D

#1B528D is a dark, moderate cyan. Relative luminance 0.082; OKLCH L 43.5% C 0.113 H 253.3°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#1B528D
RGB	rgb(27, 82, 141)
HSL	hsl(211, 68%, 33%)
HSV	hsv(211, 81%, 55%)
CMYK	cmyk(80.9%, 41.8%, 0%, 44.7%)
CIE-LAB	lab(34.37, 4.47, -37.76)
CIE-LCH	lch(34.37, 38.03, 276.76°)
OKLab	oklab(43.51% -0.0325 -0.108)
OKLCH	oklch(43.51% 0.113 253.3)
XYZ	xyz(8.2752, 8.1897, 26.3388)
Luminance	0.0819 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B528D #8D561B

analogous

#1B8B8D #1B528D #1D1B8D

triadic

#1B528D #8D1B52 #528D1B

tetradic

#1B528D #8D1B8B #8D561B #1B8D1D

square

#1B528D #8D1B8B #8D561B #1B8D1D

split-complementary

#1B528D #8D1D1B #8B8D1B

monochromatic

#071626 #11345A #1B528D #2570C0 #478FDC

Accessibility & contrast

On white

7.96

#1B528D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#1B528D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B528D

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B528D	#FFFFFF	#000000	##FFFFFF
##1B528D	1.00	7.96	2.64	7.96
#FFFFFF	7.96	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#35568F

Deuteranopia (green-blind)

#224C8C

Tritanopia (blue-blind)

#006068

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1b528d;
/* rgb */ color: rgb(27, 82, 141);
/* oklch */ color: oklch(43.5% 0.113 253.3);

Tailwind

colors: {
  custom: {
    50: '#6a82af',
    500: '#1b528d',
    950: '#000000',
  },
}

SCSS

$custom: #1b528d;
$custom-light: #6a82af;
$custom-dark: #000000;

JSON

{
  "hex": "#1b528d",
  "rgb": {
    "r": 27,
    "g": 82,
    "b": 141
  },
  "hsl": {
    "h": 211.053,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.43508,
    "c": 0.11275,
    "h": 253.3
  },
  "luminance": 0.08191
}

Semantic roles & 50–950 ramp

primary

#1B528D

secondary

#BD8446

accent

#973DEB

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1B528D

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

Preview Lab → · Contrast checker → · Palette generator →