#1B489C#1B489C

#1B489C is a dark, vivid blue. Relative luminance 0.073; OKLCH L 42.3% C 0.146 H 261.4°. Best body text is #FFFFFF at 8.56:1 contrast (WCAG AA passes).

Color values

HEX	#1B489C
RGB	rgb(27, 72, 156)
HSL	hsl(219, 70%, 36%)
HSV	hsv(219, 83%, 61%)
CMYK	cmyk(82.7%, 53.8%, 0%, 38.8%)
CIE-LAB	lab(32.41, 17.27, -50.04)
CIE-LCH	lch(32.41, 52.94, 289.04°)
OKLab	oklab(42.32% -0.0217 -0.1443)
OKLCH	oklch(42.32% 0.146 261.4)
XYZ	xyz(8.7679, 7.2670, 32.3866)
Luminance	0.0727 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B489C #9C6F1B

analogous

#1B889C #1B489C #2E1B9C

triadic

#1B489C #9C1B48 #489C1B

tetradic

#1B489C #9C1B88 #9C6F1B #1B9C2E

square

#1B489C #9C1B88 #9C6F1B #1B9C2E

split-complementary

#1B489C #9C2E1B #889C1B

monochromatic

#091834 #123068 #1B489C #2460D0 #5183E1

Accessibility & contrast

On white

8.56

#1B489C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#1B489C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B489C

8.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B489C	#FFFFFF	#000000	##FFFFFF
##1B489C	1.00	8.56	2.45	8.56
#FFFFFF	8.56	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#06529F

Deuteranopia (green-blind)

#00479A

Tritanopia (blue-blind)

#005D6B

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1b489c;
/* rgb */ color: rgb(27, 72, 156);
/* oklch */ color: oklch(42.3% 0.146 261.4);

Tailwind

colors: {
  custom: {
    50: '#6e7aba',
    500: '#1b489c',
    950: '#000000',
  },
}

SCSS

$custom: #1b489c;
$custom-light: #6e7aba;
$custom-dark: #000000;

JSON

{
  "hex": "#1b489c",
  "rgb": {
    "r": 27,
    "g": 72,
    "b": 156
  },
  "hsl": {
    "h": 219.07,
    "s": 70.492,
    "l": 35.882
  },
  "oklch": {
    "l": 0.42319,
    "c": 0.14593,
    "h": 261.4
  },
  "luminance": 0.07268
}

Semantic roles & 50–950 ramp

primary

#1B489C

secondary

#C39B4F

accent

#AF3BED

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080912

muted

#7B7B81

Preview Lab

Preview with #1B489C

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

Preview Lab → · Contrast checker → · Palette generator →