#1B529F#1B529F

#1B529F is a dark, vivid blue. Relative luminance 0.088; OKLCH L 44.8% C 0.138 H 257.9°. Best body text is #FFFFFF at 7.62:1 contrast (WCAG AA passes).

Color values

HEX	#1B529F
RGB	rgb(27, 82, 159)
HSL	hsl(215, 71%, 36%)
HSV	hsv(215, 83%, 62%)
CMYK	cmyk(83%, 48.4%, 0%, 37.6%)
CIE-LAB	lab(35.54, 11.72, -46.80)
CIE-LCH	lch(35.54, 48.24, 284.06°)
OKLab	oklab(44.78% -0.0288 -0.1345)
OKLCH	oklch(44.78% 0.138 257.9)
XYZ	xyz(9.7250, 8.7696, 33.9743)
Luminance	0.0877 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B529F #9F681B

analogous

#1B949F #1B529F #261B9F

triadic

#1B529F #9F1B52 #529F1B

tetradic

#1B529F #9F1B94 #9F681B #1B9F26

square

#1B529F #9F1B94 #9F681B #1B9F26

split-complementary

#1B529F #9F261B #949F1B

monochromatic

#091C36 #12376B #1B529F #246DD3 #538EE2

Accessibility & contrast

On white

7.62

#1B529F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#1B529F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B529F

7.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B529F	#FFFFFF	#000000	##FFFFFF
##1B529F	1.00	7.62	2.75	7.62
#FFFFFF	7.62	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#265AA2

Deuteranopia (green-blind)

#004E9D

Tritanopia (blue-blind)

#006571

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1b529f;
/* rgb */ color: rgb(27, 82, 159);
/* oklch */ color: oklch(44.8% 0.138 257.9);

Tailwind

colors: {
  custom: {
    50: '#6f82bc',
    500: '#1b529f',
    950: '#000000',
  },
}

SCSS

$custom: #1b529f;
$custom-light: #6f82bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1b529f",
  "rgb": {
    "r": 27,
    "g": 82,
    "b": 159
  },
  "hsl": {
    "h": 215,
    "s": 70.968,
    "l": 36.471
  },
  "oklch": {
    "l": 0.44783,
    "c": 0.13759,
    "h": 257.9
  },
  "luminance": 0.08771
}

Semantic roles & 50–950 ramp

primary

#1B529F

secondary

#C59551

accent

#A33AEE

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1B529F

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

Preview Lab → · Contrast checker → · Palette generator →