#1B4386#1B4386

#1B4386 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 39.5% C 0.121 H 260.1°. Best body text is #FFFFFF at 9.57:1 contrast (WCAG AA passes).

Color values

HEX	#1B4386
RGB	rgb(27, 67, 134)
HSL	hsl(218, 66%, 32%)
HSV	hsv(218, 80%, 53%)
CMYK	cmyk(79.9%, 50%, 0%, 47.5%)
CIE-LAB	lab(29.33, 11.77, -41.55)
CIE-LCH	lch(29.33, 43.18, 285.82°)
OKLab	oklab(39.46% -0.0207 -0.1194)
OKLCH	oklch(39.46% 0.121 260.1)
XYZ	xyz(6.7607, 5.9678, 23.3452)
Luminance	0.0597 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4386 #865E1B

analogous

#1B7986 #1B4386 #291B86

triadic

#1B4386 #861B43 #43861B

tetradic

#1B4386 #861B79 #865E1B #1B8629

square

#1B4386 #861B79 #865E1B #1B8629

split-complementary

#1B4386 #86291B #79861B

monochromatic

#061020 #112A53 #1B4386 #255CB9 #427BD9

Accessibility & contrast

On white

9.57

#1B4386 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#1B4386 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4386

9.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4386	#FFFFFF	#000000	##FFFFFF
##1B4386	1.00	9.57	2.19	9.57
#FFFFFF	9.57	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C4A88

Deuteranopia (green-blind)

#004185

Tritanopia (blue-blind)

#00535E

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1b4386;
/* rgb */ color: rgb(27, 67, 134);
/* oklch */ color: oklch(39.5% 0.121 260.1);

Tailwind

colors: {
  custom: {
    50: '#6976aa',
    500: '#1b4386',
    950: '#000000',
  },
}

SCSS

$custom: #1b4386;
$custom-light: #6976aa;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4386",
  "rgb": {
    "r": 27,
    "g": 67,
    "b": 134
  },
  "hsl": {
    "h": 217.57,
    "s": 66.46,
    "l": 31.569
  },
  "oklch": {
    "l": 0.39458,
    "c": 0.1212,
    "h": 260.1
  },
  "luminance": 0.05969
}

Semantic roles & 50–950 ramp

primary

#1B4386

secondary

#B98D44

accent

#A93EE9

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1B4386

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

Preview Lab → · Contrast checker → · Palette generator →