#1B2A88#1B2A88

#1B2A88 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.4% C 0.156 H 268.9°. Best body text is #FFFFFF at 12.11:1 contrast (WCAG AA passes).

Color values

HEX	#1B2A88
RGB	rgb(27, 42, 136)
HSL	hsl(232, 67%, 32%)
HSV	hsv(232, 80%, 53%)
CMYK	cmyk(80.1%, 69.1%, 0%, 46.7%)
CIE-LAB	lab(22.53, 29.87, -53.86)
CIE-LCH	lch(22.53, 61.59, 299.01°)
OKLab	oklab(34.42% -0.003 -0.1559)
OKLCH	oklch(34.42% 0.156 268.9)
XYZ	xyz(5.7224, 3.6659, 23.6938)
Luminance	0.0367 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2A88 #88791B

analogous

#1B6188 #1B2A88 #431B88

triadic

#1B2A88 #881B2A #2A881B

tetradic

#1B2A88 #881B61 #88791B #1B8843

square

#1B2A88 #881B61 #88791B #1B8843

split-complementary

#1B2A88 #88431B #61881B

monochromatic

#070A22 #111A55 #1B2A88 #253ABB #4458DA

Accessibility & contrast

On white

12.11

#1B2A88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#1B2A88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2A88

12.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2A88	#FFFFFF	#000000	##FFFFFF
##1B2A88	1.00	12.11	1.73	12.11
#FFFFFF	12.11	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B8B

Deuteranopia (green-blind)

#003186

Tritanopia (blue-blind)

#004455

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1b2a88;
/* rgb */ color: rgb(27, 42, 136);
/* oklch */ color: oklch(34.4% 0.156 268.9);

Tailwind

colors: {
  custom: {
    50: '#6b63ac',
    500: '#1b2a88',
    950: '#000000',
  },
}

SCSS

$custom: #1b2a88;
$custom-light: #6b63ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2a88",
  "rgb": {
    "r": 27,
    "g": 42,
    "b": 136
  },
  "hsl": {
    "h": 231.743,
    "s": 66.871,
    "l": 31.961
  },
  "oklch": {
    "l": 0.34416,
    "c": 0.15595,
    "h": 268.9
  },
  "luminance": 0.03667
}

Semantic roles & 50–950 ramp

primary

#1B2A88

secondary

#BBAB44

accent

#D23EEA

background

#F7F5FA

surface

#EDEAF4

border

#C8C6CE

text

#080510

muted

#7B797F

Preview Lab

Preview with #1B2A88

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

Preview Lab → · Contrast checker → · Palette generator →