#1B528F#1B528F

#1B528F is a dark, moderate cyan. Relative luminance 0.083; OKLCH L 43.6% C 0.116 H 253.9°. Best body text is #FFFFFF at 7.92:1 contrast (WCAG AA passes).

Color values

HEX	#1B528F
RGB	rgb(27, 82, 143)
HSL	hsl(212, 68%, 33%)
HSV	hsv(212, 81%, 56%)
CMYK	cmyk(81.1%, 42.7%, 0%, 43.9%)
CIE-LAB	lab(34.50, 5.28, -38.79)
CIE-LCH	lch(34.50, 39.14, 277.75°)
OKLab	oklab(43.64% -0.032 -0.111)
OKLCH	oklch(43.64% 0.116 253.9)
XYZ	xyz(8.4254, 8.2498, 27.1296)
Luminance	0.0825 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B528F #8F581B

analogous

#1B8C8F #1B528F #1E1B8F

triadic

#1B528F #8F1B52 #528F1B

tetradic

#1B528F #8F1B8C #8F581B #1B8F1E

square

#1B528F #8F1B8C #8F581B #1B8F1E

split-complementary

#1B528F #8F1E1B #8C8F1B

monochromatic

#081728 #11345C #1B528F #2570C2 #488EDC

Accessibility & contrast

On white

7.92

#1B528F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#1B528F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B528F

7.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B528F	#FFFFFF	#000000	##FFFFFF
##1B528F	1.00	7.92	2.65	7.92
#FFFFFF	7.92	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#345791

Deuteranopia (green-blind)

#1F4C8E

Tritanopia (blue-blind)

#006069

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1b528f;
/* rgb */ color: rgb(27, 82, 143);
/* oklch */ color: oklch(43.6% 0.116 253.9);

Tailwind

colors: {
  custom: {
    50: '#6b82b0',
    500: '#1b528f',
    950: '#000000',
  },
}

SCSS

$custom: #1b528f;
$custom-light: #6b82b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b528f",
  "rgb": {
    "r": 27,
    "g": 82,
    "b": 143
  },
  "hsl": {
    "h": 211.552,
    "s": 68.235,
    "l": 33.333
  },
  "oklch": {
    "l": 0.43644,
    "c": 0.11551,
    "h": 253.9
  },
  "luminance": 0.08251
}

Semantic roles & 50–950 ramp

primary

#1B528F

secondary

#BE8648

accent

#983DEB

background

#F6F7FA

surface

#ECEEF5

border

#C7C9CF

text

#080A10

muted

#7A7C7F

Preview Lab

Preview with #1B528F

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

Preview Lab → · Contrast checker → · Palette generator →