#1B3072#1B3072

#1B3072 is a dark, moderate blue. Relative luminance 0.036; OKLCH L 33.5% C 0.117 H 266.6°. Best body text is #FFFFFF at 12.26:1 contrast (WCAG AA passes).

Color values

HEX	#1B3072
RGB	rgb(27, 48, 114)
HSL	hsl(226, 62%, 28%)
HSV	hsv(226, 76%, 45%)
CMYK	cmyk(76.3%, 57.9%, 0%, 55.3%)
CIE-LAB	lab(22.16, 16.98, -40.53)
CIE-LCH	lch(22.16, 43.95, 292.73°)
OKLab	oklab(33.53% -0.0069 -0.1168)
OKLCH	oklch(33.53% 0.117 266.6)
XYZ	xyz(4.5451, 3.5613, 16.3642)
Luminance	0.0356 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3072 #725D1B

analogous

#1B5C72 #1B3072 #311B72

triadic

#1B3072 #721B30 #30721B

tetradic

#1B3072 #721B5C #725D1B #1B7231

square

#1B3072 #721B5C #725D1B #1B7231

split-complementary

#1B3072 #72311B #5C721B

monochromatic

#060A19 #0F1B41 #1B3072 #2745A3 #385CD0

Accessibility & contrast

On white

12.26

#1B3072 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1B3072 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3072

12.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3072	#FFFFFF	#000000	##FFFFFF
##1B3072	1.00	12.26	1.71	12.26
#FFFFFF	12.26	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003974

Deuteranopia (green-blind)

#003171

Tritanopia (blue-blind)

#00404C

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1b3072;
/* rgb */ color: rgb(27, 48, 114);
/* oklch */ color: oklch(33.5% 0.117 266.6);

Tailwind

colors: {
  custom: {
    50: '#65679b',
    500: '#1b3072',
    950: '#000000',
  },
}

SCSS

$custom: #1b3072;
$custom-light: #65679b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3072",
  "rgb": {
    "r": 27,
    "g": 48,
    "b": 114
  },
  "hsl": {
    "h": 225.517,
    "s": 61.702,
    "l": 27.647
  },
  "oklch": {
    "l": 0.33527,
    "c": 0.11699,
    "h": 266.6
  },
  "luminance": 0.03562
}

Semantic roles & 50–950 ramp

primary

#1B3072

secondary

#A78E42

accent

#BE43E5

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1B3072

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

Preview Lab → · Contrast checker → · Palette generator →