#1B2D70#1B2D70

#1B2D70 is a dark, moderate blue. Relative luminance 0.033; OKLCH L 32.7% C 0.118 H 267.8°. Best body text is #FFFFFF at 12.68:1 contrast (WCAG AA passes).

Color values

HEX	#1B2D70
RGB	rgb(27, 45, 112)
HSL	hsl(227, 61%, 27%)
HSV	hsv(227, 76%, 44%)
CMYK	cmyk(75.9%, 59.8%, 0%, 56.1%)
CIE-LAB	lab(21.13, 18.32, -40.93)
CIE-LCH	lch(21.13, 44.84, 294.11°)
OKLab	oklab(32.7% -0.0045 -0.118)
OKLCH	oklch(32.7% 0.118 267.8)
XYZ	xyz(4.3140, 3.2792, 15.7317)
Luminance	0.0328 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2D70 #705E1B

analogous

#1B5870 #1B2D70 #341B70

triadic

#1B2D70 #701B2D #2D701B

tetradic

#1B2D70 #701B58 #705E1B #1B7034

square

#1B2D70 #701B58 #705E1B #1B7034

split-complementary

#1B2D70 #70341B #58701B

monochromatic

#060A19 #0F193F #1B2D70 #2741A1 #3757CF

Accessibility & contrast

On white

12.68

#1B2D70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#1B2D70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2D70

12.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2D70	#FFFFFF	#000000	##FFFFFF
##1B2D70	1.00	12.68	1.66	12.68
#FFFFFF	12.68	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003772

Deuteranopia (green-blind)

#002F6F

Tritanopia (blue-blind)

#003E49

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #1b2d70;
/* rgb */ color: rgb(27, 45, 112);
/* oklch */ color: oklch(32.7% 0.118 267.8);

Tailwind

colors: {
  custom: {
    50: '#65659a',
    500: '#1b2d70',
    950: '#000000',
  },
}

SCSS

$custom: #1b2d70;
$custom-light: #65659a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2d70",
  "rgb": {
    "r": 27,
    "g": 45,
    "b": 112
  },
  "hsl": {
    "h": 227.294,
    "s": 61.151,
    "l": 27.255
  },
  "oklch": {
    "l": 0.32697,
    "c": 0.11809,
    "h": 267.8
  },
  "luminance": 0.0328
}

Semantic roles & 50–950 ramp

primary

#1B2D70

secondary

#A59042

accent

#C244E4

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06050E

muted

#7A7A7E

Preview Lab

Preview with #1B2D70

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

Preview Lab → · Contrast checker → · Palette generator →