#1B2B72#1B2B72

#1B2B72 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.5% C 0.124 H 268.7°. Best body text is #FFFFFF at 12.84:1 contrast (WCAG AA passes).

Color values

HEX	#1B2B72
RGB	rgb(27, 43, 114)
HSL	hsl(229, 62%, 28%)
HSV	hsv(229, 76%, 45%)
CMYK	cmyk(76.3%, 62.3%, 0%, 55.3%)
CIE-LAB	lab(20.73, 20.55, -42.86)
CIE-LCH	lch(20.73, 47.53, 295.61°)
OKLab	oklab(32.45% -0.0028 -0.1237)
OKLCH	oklch(32.45% 0.124 268.7)
XYZ	xyz(4.3521, 3.1752, 16.2998)
Luminance	0.0318 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2B72 #72621B

analogous

#1B5672 #1B2B72 #371B72

triadic

#1B2B72 #721B2B #2B721B

tetradic

#1B2B72 #721B56 #72621B #1B7237

square

#1B2B72 #721B56 #72621B #1B7237

split-complementary

#1B2B72 #72371B #56721B

monochromatic

#060919 #0F1841 #1B2B72 #273EA3 #3854D0

Accessibility & contrast

On white

12.84

#1B2B72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#1B2B72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2B72

12.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2B72	#FFFFFF	#000000	##FFFFFF
##1B2B72	1.00	12.84	1.64	12.84
#FFFFFF	12.84	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003674

Deuteranopia (green-blind)

#002E71

Tritanopia (blue-blind)

#003D4A

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1b2b72;
/* rgb */ color: rgb(27, 43, 114);
/* oklch */ color: oklch(32.5% 0.124 268.7);

Tailwind

colors: {
  custom: {
    50: '#65649b',
    500: '#1b2b72',
    950: '#000000',
  },
}

SCSS

$custom: #1b2b72;
$custom-light: #65649b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2b72",
  "rgb": {
    "r": 27,
    "g": 43,
    "b": 114
  },
  "hsl": {
    "h": 228.966,
    "s": 61.702,
    "l": 27.647
  },
  "oklch": {
    "l": 0.32454,
    "c": 0.12375,
    "h": 268.7
  },
  "luminance": 0.03176
}

Semantic roles & 50–950 ramp

primary

#1B2B72

secondary

#A79442

accent

#C743E5

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#06050E

muted

#7A797E

Preview Lab

Preview with #1B2B72

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

Preview Lab → · Contrast checker → · Palette generator →