#1B52A0#1B52A0

#1B52A0 is a dark, vivid blue. Relative luminance 0.088; OKLCH L 44.9% C 0.139 H 258.1°. Best body text is #FFFFFF at 7.61:1 contrast (WCAG AA passes).

Color values

HEX	#1B52A0
RGB	rgb(27, 82, 160)
HSL	hsl(215, 71%, 37%)
HSV	hsv(215, 83%, 63%)
CMYK	cmyk(83.1%, 48.8%, 0%, 37.3%)
CIE-LAB	lab(35.61, 12.12, -47.29)
CIE-LCH	lch(35.61, 48.81, 284.38°)
OKLab	oklab(44.86% -0.0286 -0.136)
OKLCH	oklch(44.86% 0.139 258.1)
XYZ	xyz(9.8121, 8.8045, 34.4332)
Luminance	0.0881 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B52A0 #A0691B

analogous

#1B95A0 #1B52A0 #271BA0

triadic

#1B52A0 #A01B52 #52A01B

tetradic

#1B52A0 #A01B95 #A0691B #1BA027

square

#1B52A0 #A01B95 #A0691B #1BA027

split-complementary

#1B52A0 #A0271B #95A01B

monochromatic

#091C37 #12376C #1B52A0 #246DD4 #538EE2

Accessibility & contrast

On white

7.61

#1B52A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.76

#1B52A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B52A0

7.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B52A0	#FFFFFF	#000000	##FFFFFF
##1B52A0	1.00	7.61	2.76	7.61
#FFFFFF	7.61	1.00	21.00	1.00
#000000	2.76	21.00	1.00	21.00
##FFFFFF	7.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#255AA3

Deuteranopia (green-blind)

#004E9E

Tritanopia (blue-blind)

#006571

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #1b52a0;
/* rgb */ color: rgb(27, 82, 160);
/* oklch */ color: oklch(44.9% 0.139 258.1);

Tailwind

colors: {
  custom: {
    50: '#6f82bd',
    500: '#1b52a0',
    950: '#000000',
  },
}

SCSS

$custom: #1b52a0;
$custom-light: #6f82bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b52a0",
  "rgb": {
    "r": 27,
    "g": 82,
    "b": 160
  },
  "hsl": {
    "h": 215.188,
    "s": 71.123,
    "l": 36.667
  },
  "oklch": {
    "l": 0.44857,
    "c": 0.13896,
    "h": 258.1
  },
  "luminance": 0.08806
}

Semantic roles & 50–950 ramp

primary

#1B52A0

secondary

#C59552

accent

#A33AEE

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1B52A0

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

Preview Lab → · Contrast checker → · Palette generator →