#1B2A71#1B2A71

#1B2A71 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.2% C 0.124 H 269.1°. Best body text is #FFFFFF at 12.99:1 contrast (WCAG AA passes).

Color values

HEX	#1B2A71
RGB	rgb(27, 42, 113)
HSL	hsl(230, 61%, 27%)
HSV	hsv(230, 76%, 44%)
CMYK	cmyk(76.1%, 62.8%, 0%, 55.7%)
CIE-LAB	lab(20.36, 20.86, -42.82)
CIE-LCH	lch(20.36, 47.63, 295.97°)
OKLab	oklab(32.15% -0.002 -0.1236)
OKLCH	oklch(32.15% 0.124 269.1)
XYZ	xyz(4.2596, 3.0808, 15.9897)
Luminance	0.0308 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2A71 #71621B

analogous

#1B5571 #1B2A71 #371B71

triadic

#1B2A71 #711B2A #2A711B

tetradic

#1B2A71 #711B55 #71621B #1B7137

square

#1B2A71 #711B55 #71621B #1B7137

split-complementary

#1B2A71 #71371B #55711B

monochromatic

#060919 #0F1840 #1B2A71 #273CA2 #3752CF

Accessibility & contrast

On white

12.99

#1B2A71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#1B2A71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2A71

12.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2A71	#FFFFFF	#000000	##FFFFFF
##1B2A71	1.00	12.99	1.62	12.99
#FFFFFF	12.99	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003573

Deuteranopia (green-blind)

#002D70

Tritanopia (blue-blind)

#003C49

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1b2a71;
/* rgb */ color: rgb(27, 42, 113);
/* oklch */ color: oklch(32.2% 0.124 269.1);

Tailwind

colors: {
  custom: {
    50: '#65639a',
    500: '#1b2a71',
    950: '#000000',
  },
}

SCSS

$custom: #1b2a71;
$custom-light: #65639a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2a71",
  "rgb": {
    "r": 27,
    "g": 42,
    "b": 113
  },
  "hsl": {
    "h": 229.535,
    "s": 61.429,
    "l": 27.451
  },
  "oklch": {
    "l": 0.32153,
    "c": 0.12362,
    "h": 269.1
  },
  "luminance": 0.03081
}

Semantic roles & 50–950 ramp

primary

#1B2A71

secondary

#A69442

accent

#C843E5

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#06050E

muted

#7A797E

Preview Lab

Preview with #1B2A71

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

Preview Lab → · Contrast checker → · Palette generator →