#1B2A82#1B2A82

#1B2A82 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.8% C 0.148 H 269.0°. Best body text is #FFFFFF at 12.35:1 contrast (WCAG AA passes).

Color values

HEX	#1B2A82
RGB	rgb(27, 42, 130)
HSL	hsl(231, 66%, 31%)
HSV	hsv(231, 79%, 51%)
CMYK	cmyk(79.2%, 67.7%, 0%, 49%)
CIE-LAB	lab(21.94, 27.56, -51.06)
CIE-LCH	lch(21.94, 58.02, 298.36°)
OKLab	oklab(33.81% -0.0025 -0.1477)
OKLCH	oklch(33.81% 0.148 269)
XYZ	xyz(5.3078, 3.5001, 21.5106)
Luminance	0.0350 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2A82 #82731B

analogous

#1B5D82 #1B2A82 #3F1B82

triadic

#1B2A82 #821B2A #2A821B

tetradic

#1B2A82 #821B5D #82731B #1B823F

square

#1B2A82 #821B5D #82731B #1B823F

split-complementary

#1B2A82 #823F1B #5D821B

monochromatic

#06091D #101A4F #1B2A82 #263AB5 #4056D7

Accessibility & contrast

On white

12.35

#1B2A82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1B2A82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2A82

12.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2A82	#FFFFFF	#000000	##FFFFFF
##1B2A82	1.00	12.35	1.70	12.35
#FFFFFF	12.35	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003985

Deuteranopia (green-blind)

#003080

Tritanopia (blue-blind)

#004152

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1b2a82;
/* rgb */ color: rgb(27, 42, 130);
/* oklch */ color: oklch(33.8% 0.148 269.0);

Tailwind

colors: {
  custom: {
    50: '#6a63a7',
    500: '#1b2a82',
    950: '#000000',
  },
}

SCSS

$custom: #1b2a82;
$custom-light: #6a63a7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2a82",
  "rgb": {
    "r": 27,
    "g": 42,
    "b": 130
  },
  "hsl": {
    "h": 231.262,
    "s": 65.605,
    "l": 30.784
  },
  "oklch": {
    "l": 0.33806,
    "c": 0.14777,
    "h": 269
  },
  "luminance": 0.03501
}

Semantic roles & 50–950 ramp

primary

#1B2A82

secondary

#B6A543

accent

#D03FE9

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#070510

muted

#7A797F

Preview Lab

Preview with #1B2A82

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

Preview Lab → · Contrast checker → · Palette generator →