#1B335C#1B335C

#1B335C is a dark, moderate blue. Relative luminance 0.034; OKLCH L 32.5% C 0.079 H 260.4°. Best body text is #FFFFFF at 12.54:1 contrast (WCAG AA passes).

Color values

HEX	#1B335C
RGB	rgb(27, 51, 92)
HSL	hsl(218, 55%, 23%)
HSV	hsv(218, 71%, 36%)
CMYK	cmyk(70.7%, 44.6%, 0%, 63.9%)
CIE-LAB	lab(21.48, 5.85, -27.34)
CIE-LCH	lch(21.48, 27.96, 282.07°)
OKLab	oklab(32.49% -0.0132 -0.0779)
OKLCH	oklch(32.49% 0.079 260.4)
XYZ	xyz(3.5669, 3.3730, 10.5862)
Luminance	0.0337 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B335C #5C441B

analogous

#1B535C #1B335C #231B5C

triadic

#1B335C #5C1B33 #335C1B

tetradic

#1B335C #5C1B53 #5C441B #1B5C23

square

#1B335C #5C1B53 #5C441B #1B5C23

split-complementary

#1B335C #5C231B #535C1B

monochromatic

#070D18 #0D192D #1B335C #294D8B #3767BB

Accessibility & contrast

On white

12.54

#1B335C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#1B335C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B335C

12.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B335C	#FFFFFF	#000000	##FFFFFF
##1B335C	1.00	12.54	1.67	12.54
#FFFFFF	12.54	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#20375E

Deuteranopia (green-blind)

#16315B

Tritanopia (blue-blind)

#003C43

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1b335c;
/* rgb */ color: rgb(27, 51, 92);
/* oklch */ color: oklch(32.5% 0.079 260.4);

Tailwind

colors: {
  custom: {
    50: '#5f6a8a',
    500: '#1b335c',
    950: '#000000',
  },
}

SCSS

$custom: #1b335c;
$custom-light: #5f6a8a;
$custom-dark: #000000;

JSON

{
  "hex": "#1b335c",
  "rgb": {
    "r": 27,
    "g": 51,
    "b": 92
  },
  "hsl": {
    "h": 217.846,
    "s": 54.622,
    "l": 23.333
  },
  "oklch": {
    "l": 0.3249,
    "c": 0.07905,
    "h": 260.4
  },
  "luminance": 0.03373
}

Semantic roles & 50–950 ramp

primary

#1B335C

secondary

#927441

accent

#A74ADE

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05060C

muted

#797A7D

Preview Lab

Preview with #1B335C

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

Preview Lab → · Contrast checker → · Palette generator →