#1B489F#1B489F

#1B489F is a dark, vivid blue. Relative luminance 0.074; OKLCH L 42.6% C 0.150 H 261.8°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#1B489F
RGB	rgb(27, 72, 159)
HSL	hsl(220, 71%, 36%)
HSV	hsv(220, 83%, 62%)
CMYK	cmyk(83%, 54.7%, 0%, 37.6%)
CIE-LAB	lab(32.63, 18.48, -51.49)
CIE-LCH	lch(32.63, 54.70, 289.74°)
OKLab	oklab(42.56% -0.0214 -0.1486)
OKLCH	oklch(42.56% 0.15 261.8)
XYZ	xyz(9.0251, 7.3698, 33.7410)
Luminance	0.0737 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B489F #9F721B

analogous

#1B8A9F #1B489F #301B9F

triadic

#1B489F #9F1B48 #489F1B

tetradic

#1B489F #9F1B8A #9F721B #1B9F30

square

#1B489F #9F1B8A #9F721B #1B9F30

split-complementary

#1B489F #9F301B #8A9F1B

monochromatic

#091936 #12306B #1B489F #2460D3 #5383E2

Accessibility & contrast

On white

8.49

#1B489F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#1B489F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B489F

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B489F	#FFFFFF	#000000	##FFFFFF
##1B489F	1.00	8.49	2.47	8.49
#FFFFFF	8.49	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053A2

Deuteranopia (green-blind)

#00479D

Tritanopia (blue-blind)

#005D6C

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1b489f;
/* rgb */ color: rgb(27, 72, 159);
/* oklch */ color: oklch(42.6% 0.150 261.8);

Tailwind

colors: {
  custom: {
    50: '#6f7abc',
    500: '#1b489f',
    950: '#000000',
  },
}

SCSS

$custom: #1b489f;
$custom-light: #6f7abc;
$custom-dark: #000000;

JSON

{
  "hex": "#1b489f",
  "rgb": {
    "r": 27,
    "g": 72,
    "b": 159
  },
  "hsl": {
    "h": 219.545,
    "s": 70.968,
    "l": 36.471
  },
  "oklch": {
    "l": 0.42563,
    "c": 0.15009,
    "h": 261.8
  },
  "luminance": 0.07371
}

Semantic roles & 50–950 ramp

primary

#1B489F

secondary

#C59D51

accent

#B03AEE

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1B489F

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

Preview Lab → · Contrast checker → · Palette generator →