#1B3CA0#1B3CA0

#1B3CA0 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.2% C 0.167 H 265.3°. Best body text is #FFFFFF at 9.54:1 contrast (WCAG AA passes).

Color values

HEX	#1B3CA0
RGB	rgb(27, 60, 160)
HSL	hsl(225, 71%, 37%)
HSV	hsv(225, 83%, 63%)
CMYK	cmyk(83.1%, 62.5%, 0%, 37.3%)
CIE-LAB	lab(29.42, 27.05, -57.34)
CIE-LCH	lch(29.42, 63.40, 295.26°)
OKLab	oklab(40.17% -0.0137 -0.1659)
OKLCH	oklch(40.17% 0.167 265.3)
XYZ	xyz(8.4108, 6.0018, 33.9661)
Luminance	0.0600 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3CA0 #A07F1B

analogous

#1B7FA0 #1B3CA0 #3D1BA0

triadic

#1B3CA0 #A01B3C #3CA01B

tetradic

#1B3CA0 #A01B7F #A07F1B #1BA03D

square

#1B3CA0 #A01B7F #A07F1B #1BA03D

split-complementary

#1B3CA0 #A03D1B #7FA01B

monochromatic

#091537 #12286C #1B3CA0 #2450D4 #5377E2

Accessibility & contrast

On white

9.54

#1B3CA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#1B3CA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3CA0

9.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3CA0	#FFFFFF	#000000	##FFFFFF
##1B3CA0	1.00	9.54	2.20	9.54
#FFFFFF	9.54	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA3

Deuteranopia (green-blind)

#003F9E

Tritanopia (blue-blind)

#005668

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1b3ca0;
/* rgb */ color: rgb(27, 60, 160);
/* oklch */ color: oklch(40.2% 0.167 265.3);

Tailwind

colors: {
  custom: {
    50: '#7071bd',
    500: '#1b3ca0',
    950: '#000000',
  },
}

SCSS

$custom: #1b3ca0;
$custom-light: #7071bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3ca0",
  "rgb": {
    "r": 27,
    "g": 60,
    "b": 160
  },
  "hsl": {
    "h": 225.113,
    "s": 71.123,
    "l": 36.667
  },
  "oklch": {
    "l": 0.40172,
    "c": 0.1665,
    "h": 265.3
  },
  "luminance": 0.06003
}

Semantic roles & 50–950 ramp

primary

#1B3CA0

secondary

#C5A852

accent

#C13AEE

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1B3CA0

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

Preview Lab → · Contrast checker → · Palette generator →