#1B2B74#1B2B74

#1B2B74 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.6% C 0.127 H 268.8°. Best body text is #FFFFFF at 12.77:1 contrast (WCAG AA passes).

Color values

HEX	#1B2B74
RGB	rgb(27, 43, 116)
HSL	hsl(229, 62%, 28%)
HSV	hsv(229, 77%, 45%)
CMYK	cmyk(76.7%, 62.9%, 0%, 54.5%)
CIE-LAB	lab(20.91, 21.35, -43.86)
CIE-LCH	lch(20.91, 48.78, 295.96°)
OKLab	oklab(32.64% -0.0028 -0.1266)
OKLCH	oklch(32.64% 0.127 268.8)
XYZ	xyz(4.4672, 3.2212, 16.9059)
Luminance	0.0322 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2B74 #74641B

analogous

#1B5874 #1B2B74 #371B74

triadic

#1B2B74 #741B2B #2B741B

tetradic

#1B2B74 #741B58 #74641B #1B7437

square

#1B2B74 #741B58 #74641B #1B7437

split-complementary

#1B2B74 #74371B #58741B

monochromatic

#060919 #0F1942 #1B2B74 #273DA6 #3954D1

Accessibility & contrast

On white

12.77

#1B2B74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#1B2B74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2B74

12.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2B74	#FFFFFF	#000000	##FFFFFF
##1B2B74	1.00	12.77	1.64	12.77
#FFFFFF	12.77	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003776

Deuteranopia (green-blind)

#002E73

Tritanopia (blue-blind)

#003D4B

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1b2b74;
/* rgb */ color: rgb(27, 43, 116);
/* oklch */ color: oklch(32.6% 0.127 268.8);

Tailwind

colors: {
  custom: {
    50: '#66649d',
    500: '#1b2b74',
    950: '#000000',
  },
}

SCSS

$custom: #1b2b74;
$custom-light: #66649d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2b74",
  "rgb": {
    "r": 27,
    "g": 43,
    "b": 116
  },
  "hsl": {
    "h": 229.213,
    "s": 62.238,
    "l": 28.039
  },
  "oklch": {
    "l": 0.32641,
    "c": 0.12667,
    "h": 268.8
  },
  "luminance": 0.03222
}

Semantic roles & 50–950 ramp

primary

#1B2B74

secondary

#A99642

accent

#C842E5

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050E

muted

#7A797E

Preview Lab

Preview with #1B2B74

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

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