#1B2F72#1B2F72

#1B2F72 is a dark, moderate blue. Relative luminance 0.035; OKLCH L 33.3% C 0.118 H 267.1°. Best body text is #FFFFFF at 12.38:1 contrast (WCAG AA passes).

Color values

HEX	#1B2F72
RGB	rgb(27, 47, 114)
HSL	hsl(226, 62%, 28%)
HSV	hsv(226, 76%, 45%)
CMYK	cmyk(76.3%, 58.8%, 0%, 55.3%)
CIE-LAB	lab(21.87, 17.70, -41.01)
CIE-LCH	lch(21.87, 44.66, 293.34°)
OKLab	oklab(33.31% -0.006 -0.1182)
OKLCH	oklch(33.31% 0.118 267.1)
XYZ	xyz(4.5047, 3.4805, 16.3507)
Luminance	0.0348 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2F72 #725E1B

analogous

#1B5A72 #1B2F72 #331B72

triadic

#1B2F72 #721B2F #2F721B

tetradic

#1B2F72 #721B5A #725E1B #1B7233

square

#1B2F72 #721B5A #725E1B #1B7233

split-complementary

#1B2F72 #72331B #5A721B

monochromatic

#060A19 #0F1B41 #1B2F72 #2743A3 #385BD0

Accessibility & contrast

On white

12.38

#1B2F72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1B2F72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2F72

12.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2F72	#FFFFFF	#000000	##FFFFFF
##1B2F72	1.00	12.38	1.70	12.38
#FFFFFF	12.38	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003974

Deuteranopia (green-blind)

#003171

Tritanopia (blue-blind)

#003F4B

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b2f72;
/* rgb */ color: rgb(27, 47, 114);
/* oklch */ color: oklch(33.3% 0.118 267.1);

Tailwind

colors: {
  custom: {
    50: '#65679b',
    500: '#1b2f72',
    950: '#000000',
  },
}

SCSS

$custom: #1b2f72;
$custom-light: #65679b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2f72",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 114
  },
  "hsl": {
    "h": 226.207,
    "s": 61.702,
    "l": 27.647
  },
  "oklch": {
    "l": 0.33308,
    "c": 0.11835,
    "h": 267.1
  },
  "luminance": 0.03481
}

Semantic roles & 50–950 ramp

primary

#1B2F72

secondary

#A79042

accent

#C043E5

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1B2F72

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

Preview Lab → · Contrast checker → · Palette generator →