#1B4382#1B4382

#1B4382 is a dark, moderate blue. Relative luminance 0.059; OKLCH L 39.2% C 0.115 H 259.3°. Best body text is #FFFFFF at 9.67:1 contrast (WCAG AA passes).

Color values

HEX	#1B4382
RGB	rgb(27, 67, 130)
HSL	hsl(217, 66%, 31%)
HSV	hsv(217, 79%, 51%)
CMYK	cmyk(79.2%, 48.5%, 0%, 49%)
CIE-LAB	lab(29.05, 10.14, -39.51)
CIE-LCH	lch(29.05, 40.79, 284.40°)
OKLab	oklab(39.15% -0.0214 -0.1134)
OKLCH	oklch(39.15% 0.115 259.3)
XYZ	xyz(6.4869, 5.8583, 21.9036)
Luminance	0.0586 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4382 #825A1B

analogous

#1B7682 #1B4382 #261B82

triadic

#1B4382 #821B43 #43821B

tetradic

#1B4382 #821B76 #825A1B #1B8226

square

#1B4382 #821B76 #825A1B #1B8226

split-complementary

#1B4382 #82261B #76821B

monochromatic

#060F1D #10294F #1B4382 #265DB5 #407BD7

Accessibility & contrast

On white

9.67

#1B4382 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#1B4382 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4382

9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4382	#FFFFFF	#000000	##FFFFFF
##1B4382	1.00	9.67	2.17	9.67
#FFFFFF	9.67	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#214984

Deuteranopia (green-blind)

#054081

Tritanopia (blue-blind)

#00525C

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1b4382;
/* rgb */ color: rgb(27, 67, 130);
/* oklch */ color: oklch(39.2% 0.115 259.3);

Tailwind

colors: {
  custom: {
    50: '#6876a7',
    500: '#1b4382',
    950: '#000000',
  },
}

SCSS

$custom: #1b4382;
$custom-light: #6876a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4382",
  "rgb": {
    "r": 27,
    "g": 67,
    "b": 130
  },
  "hsl": {
    "h": 216.699,
    "s": 65.605,
    "l": 30.784
  },
  "oklch": {
    "l": 0.39154,
    "c": 0.11542,
    "h": 259.3
  },
  "luminance": 0.05859
}

Semantic roles & 50–950 ramp

primary

#1B4382

secondary

#B68943

accent

#A73FE9

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1B4382

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

Preview Lab → · Contrast checker → · Palette generator →