#1B449F#1B449F

#1B449F is a dark, vivid blue. Relative luminance 0.069; OKLCH L 41.7% C 0.155 H 263.1°. Best body text is #FFFFFF at 8.85:1 contrast (WCAG AA passes).

Color values

HEX	#1B449F
RGB	rgb(27, 68, 159)
HSL	hsl(221, 71%, 36%)
HSV	hsv(221, 83%, 62%)
CMYK	cmyk(83%, 57.2%, 0%, 37.6%)
CIE-LAB	lab(31.51, 21.21, -53.32)
CIE-LCH	lch(31.51, 57.38, 291.69°)
OKLab	oklab(41.71% -0.0187 -0.154)
OKLCH	oklch(41.71% 0.155 263.1)
XYZ	xyz(8.7749, 6.8694, 33.6576)
Luminance	0.0687 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B449F #9F761B

analogous

#1B869F #1B449F #341B9F

triadic

#1B449F #9F1B44 #449F1B

tetradic

#1B449F #9F1B86 #9F761B #1B9F34

square

#1B449F #9F1B86 #9F761B #1B9F34

split-complementary

#1B449F #9F341B #869F1B

monochromatic

#091736 #122E6B #1B449F #245AD3 #537FE2

Accessibility & contrast

On white

8.85

#1B449F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#1B449F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B449F

8.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B449F	#FFFFFF	#000000	##FFFFFF
##1B449F	1.00	8.85	2.37	8.85
#FFFFFF	8.85	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A2

Deuteranopia (green-blind)

#00449D

Tritanopia (blue-blind)

#005B6A

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1b449f;
/* rgb */ color: rgb(27, 68, 159);
/* oklch */ color: oklch(41.7% 0.155 263.1);

Tailwind

colors: {
  custom: {
    50: '#6f77bc',
    500: '#1b449f',
    950: '#000000',
  },
}

SCSS

$custom: #1b449f;
$custom-light: #6f77bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1b449f",
  "rgb": {
    "r": 27,
    "g": 68,
    "b": 159
  },
  "hsl": {
    "h": 221.364,
    "s": 70.968,
    "l": 36.471
  },
  "oklch": {
    "l": 0.41711,
    "c": 0.15514,
    "h": 263.1
  },
  "luminance": 0.0687
}

Semantic roles & 50–950 ramp

primary

#1B449F

secondary

#C5A151

accent

#B63AEE

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1B449F

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

Preview Lab → · Contrast checker → · Palette generator →