#1B3A92#1B3A92

#1B3A92 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.5% C 0.150 H 265.1°. Best body text is #FFFFFF at 10.16:1 contrast (WCAG AA passes).

Color values

HEX	#1B3A92
RGB	rgb(27, 58, 146)
HSL	hsl(224, 69%, 34%)
HSV	hsv(224, 82%, 57%)
CMYK	cmyk(81.5%, 60.3%, 0%, 42.7%)
CIE-LAB	lab(27.66, 22.87, -51.66)
CIE-LCH	lch(27.66, 56.50, 293.88°)
OKLab	oklab(38.49% -0.0128 -0.1493)
OKLCH	oklch(38.49% 0.15 265.1)
XYZ	xyz(7.1515, 5.3336, 27.8411)
Luminance	0.0533 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3A92 #92731B

analogous

#1B7692 #1B3A92 #381B92

triadic

#1B3A92 #921B3A #3A921B

tetradic

#1B3A92 #921B76 #92731B #1B9238

square

#1B3A92 #921B76 #92731B #1B9238

split-complementary

#1B3A92 #92381B #76921B

monochromatic

#08112B #11255E #1B3A92 #254FC6 #4A70DE

Accessibility & contrast

On white

10.16

#1B3A92 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#1B3A92 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3A92

10.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3A92	#FFFFFF	#000000	##FFFFFF
##1B3A92	1.00	10.16	2.07	10.16
#FFFFFF	10.16	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004795

Deuteranopia (green-blind)

#003C90

Tritanopia (blue-blind)

#005060

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1b3a92;
/* rgb */ color: rgb(27, 58, 146);
/* oklch */ color: oklch(38.5% 0.150 265.1);

Tailwind

colors: {
  custom: {
    50: '#6d6fb3',
    500: '#1b3a92',
    950: '#000000',
  },
}

SCSS

$custom: #1b3a92;
$custom-light: #6d6fb3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3a92",
  "rgb": {
    "r": 27,
    "g": 58,
    "b": 146
  },
  "hsl": {
    "h": 224.37,
    "s": 68.786,
    "l": 33.922
  },
  "oklch": {
    "l": 0.38489,
    "c": 0.14986,
    "h": 265.1
  },
  "luminance": 0.05334
}

Semantic roles & 50–950 ramp

primary

#1B3A92

secondary

#BFA149

accent

#BE3CEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1B3A92

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

Preview Lab → · Contrast checker → · Palette generator →