#1B2F73#1B2F73

#1B2F73 is a dark, moderate blue. Relative luminance 0.035; OKLCH L 33.4% C 0.120 H 267.1°. Best body text is #FFFFFF at 12.35:1 contrast (WCAG AA passes).

Color values

HEX	#1B2F73
RGB	rgb(27, 47, 115)
HSL	hsl(226, 62%, 28%)
HSV	hsv(226, 77%, 45%)
CMYK	cmyk(76.5%, 59.1%, 0%, 54.9%)
CIE-LAB	lab(21.96, 18.10, -41.51)
CIE-LCH	lch(21.96, 45.29, 293.56°)
OKLab	oklab(33.4% -0.006 -0.1197)
OKLCH	oklch(33.4% 0.12 267.1)
XYZ	xyz(4.5619, 3.5034, 16.6521)
Luminance	0.0350 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2F73 #735F1B

analogous

#1B5B73 #1B2F73 #331B73

triadic

#1B2F73 #731B2F #2F731B

tetradic

#1B2F73 #731B5B #735F1B #1B7333

square

#1B2F73 #731B5B #735F1B #1B7333

split-complementary

#1B2F73 #73331B #5B731B

monochromatic

#060A19 #0F1B41 #1B2F73 #2743A5 #385BD0

Accessibility & contrast

On white

12.35

#1B2F73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#1B2F73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2F73

12.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2F73	#FFFFFF	#000000	##FFFFFF
##1B2F73	1.00	12.35	1.70	12.35
#FFFFFF	12.35	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003975

Deuteranopia (green-blind)

#003172

Tritanopia (blue-blind)

#00404C

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1b2f73;
/* rgb */ color: rgb(27, 47, 115);
/* oklch */ color: oklch(33.4% 0.120 267.1);

Tailwind

colors: {
  custom: {
    50: '#65679c',
    500: '#1b2f73',
    950: '#000000',
  },
}

SCSS

$custom: #1b2f73;
$custom-light: #65679c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2f73",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 115
  },
  "hsl": {
    "h": 226.364,
    "s": 61.972,
    "l": 27.843
  },
  "oklch": {
    "l": 0.33396,
    "c": 0.11984,
    "h": 267.1
  },
  "luminance": 0.03504
}

Semantic roles & 50–950 ramp

primary

#1B2F73

secondary

#A89142

accent

#C043E5

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1B2F73

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

Preview Lab → · Contrast checker → · Palette generator →