#1B52A1#1B52A1

#1B52A1 is a dark, vivid blue. Relative luminance 0.088; OKLCH L 44.9% C 0.140 H 258.3°. Best body text is #FFFFFF at 7.59:1 contrast (WCAG AA passes).

Color values

HEX	#1B52A1
RGB	rgb(27, 82, 161)
HSL	hsl(215, 71%, 37%)
HSV	hsv(215, 83%, 63%)
CMYK	cmyk(83.2%, 49.1%, 0%, 36.9%)
CIE-LAB	lab(35.67, 12.52, -47.78)
CIE-LCH	lch(35.67, 49.39, 284.69°)
OKLab	oklab(44.93% -0.0285 -0.1374)
OKLCH	oklch(44.93% 0.14 258.3)
XYZ	xyz(9.8999, 8.8396, 34.8957)
Luminance	0.0884 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B52A1 #A16A1B

analogous

#1B95A1 #1B52A1 #271BA1

triadic

#1B52A1 #A11B52 #52A11B

tetradic

#1B52A1 #A11B95 #A16A1B #1BA127

square

#1B52A1 #A11B95 #A16A1B #1BA127

split-complementary

#1B52A1 #A1271B #95A11B

monochromatic

#091D38 #12376D #1B52A1 #246DD5 #548EE2

Accessibility & contrast

On white

7.59

#1B52A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#1B52A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B52A1

7.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B52A1	#FFFFFF	#000000	##FFFFFF
##1B52A1	1.00	7.59	2.77	7.59
#FFFFFF	7.59	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#245AA4

Deuteranopia (green-blind)

#004E9F

Tritanopia (blue-blind)

#006572

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1b52a1;
/* rgb */ color: rgb(27, 82, 161);
/* oklch */ color: oklch(44.9% 0.140 258.3);

Tailwind

colors: {
  custom: {
    50: '#6f82bd',
    500: '#1b52a1',
    950: '#000000',
  },
}

SCSS

$custom: #1b52a1;
$custom-light: #6f82bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b52a1",
  "rgb": {
    "r": 27,
    "g": 82,
    "b": 161
  },
  "hsl": {
    "h": 215.373,
    "s": 71.277,
    "l": 36.863
  },
  "oklch": {
    "l": 0.44932,
    "c": 0.14034,
    "h": 258.3
  },
  "luminance": 0.08841
}

Semantic roles & 50–950 ramp

primary

#1B52A1

secondary

#C59652

accent

#A43AEE

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1B52A1

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

Preview Lab → · Contrast checker → · Palette generator →