#1B2E71#1B2E71

#1B2E71 is a dark, moderate blue. Relative luminance 0.034; OKLCH L 33.0% C 0.118 H 267.5°. Best body text is #FFFFFF at 12.53:1 contrast (WCAG AA passes).

Color values

HEX	#1B2E71
RGB	rgb(27, 46, 113)
HSL	hsl(227, 61%, 27%)
HSV	hsv(227, 76%, 44%)
CMYK	cmyk(76.1%, 59.3%, 0%, 55.7%)
CIE-LAB	lab(21.50, 18.01, -40.97)
CIE-LCH	lch(21.50, 44.75, 293.72°)
OKLab	oklab(33% -0.0053 -0.1181)
OKLCH	oklch(33% 0.118 267.5)
XYZ	xyz(4.4086, 3.3788, 16.0394)
Luminance	0.0338 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2E71 #715E1B

analogous

#1B5971 #1B2E71 #331B71

triadic

#1B2E71 #711B2E #2E711B

tetradic

#1B2E71 #711B59 #715E1B #1B7133

square

#1B2E71 #711B59 #715E1B #1B7133

split-complementary

#1B2E71 #71331B #59711B

monochromatic

#060A19 #0F1A40 #1B2E71 #2742A2 #3759CF

Accessibility & contrast

On white

12.53

#1B2E71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1B2E71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2E71

12.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2E71	#FFFFFF	#000000	##FFFFFF
##1B2E71	1.00	12.53	1.68	12.53
#FFFFFF	12.53	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003873

Deuteranopia (green-blind)

#003070

Tritanopia (blue-blind)

#003F4A

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b2e71;
/* rgb */ color: rgb(27, 46, 113);
/* oklch */ color: oklch(33.0% 0.118 267.5);

Tailwind

colors: {
  custom: {
    50: '#65669a',
    500: '#1b2e71',
    950: '#000000',
  },
}

SCSS

$custom: #1b2e71;
$custom-light: #65669a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2e71",
  "rgb": {
    "r": 27,
    "g": 46,
    "b": 113
  },
  "hsl": {
    "h": 226.744,
    "s": 61.429,
    "l": 27.451
  },
  "oklch": {
    "l": 0.33002,
    "c": 0.11823,
    "h": 267.5
  },
  "luminance": 0.03379
}

Semantic roles & 50–950 ramp

primary

#1B2E71

secondary

#A69042

accent

#C143E5

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06050E

muted

#7A7A7E

Preview Lab

Preview with #1B2E71

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

Preview Lab → · Contrast checker → · Palette generator →