#1B2A84#1B2A84

#1B2A84 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.0% C 0.151 H 269.0°. Best body text is #FFFFFF at 12.27:1 contrast (WCAG AA passes).

Color values

HEX	#1B2A84
RGB	rgb(27, 42, 132)
HSL	hsl(231, 66%, 31%)
HSV	hsv(231, 80%, 52%)
CMYK	cmyk(79.5%, 68.2%, 0%, 48.2%)
CIE-LAB	lab(22.14, 28.33, -52.00)
CIE-LCH	lch(22.14, 59.22, 298.59°)
OKLab	oklab(34.01% -0.0027 -0.1505)
OKLCH	oklch(34.01% 0.151 269)
XYZ	xyz(5.4434, 3.5543, 22.2245)
Luminance	0.0355 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2A84 #84751B

analogous

#1B5E84 #1B2A84 #401B84

triadic

#1B2A84 #841B2A #2A841B

tetradic

#1B2A84 #841B5E #84751B #1B8440

square

#1B2A84 #841B5E #84751B #1B8440

split-complementary

#1B2A84 #84401B #5E841B

monochromatic

#060A1E #111A51 #1B2A84 #253AB7 #4157D8

Accessibility & contrast

On white

12.27

#1B2A84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1B2A84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2A84

12.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2A84	#FFFFFF	#000000	##FFFFFF
##1B2A84	1.00	12.27	1.71	12.27
#FFFFFF	12.27	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A87

Deuteranopia (green-blind)

#003082

Tritanopia (blue-blind)

#004253

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1b2a84;
/* rgb */ color: rgb(27, 42, 132);
/* oklch */ color: oklch(34.0% 0.151 269.0);

Tailwind

colors: {
  custom: {
    50: '#6a63a9',
    500: '#1b2a84',
    950: '#000000',
  },
}

SCSS

$custom: #1b2a84;
$custom-light: #6a63a9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2a84",
  "rgb": {
    "r": 27,
    "g": 42,
    "b": 132
  },
  "hsl": {
    "h": 231.429,
    "s": 66.038,
    "l": 31.176
  },
  "oklch": {
    "l": 0.34008,
    "c": 0.15051,
    "h": 269
  },
  "luminance": 0.03555
}

Semantic roles & 50–950 ramp

primary

#1B2A84

secondary

#B7A743

accent

#D13FE9

background

#F6F5FA

surface

#ECEAF4

border

#C7C6CE

text

#080510

muted

#7A797F

Preview Lab

Preview with #1B2A84

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

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