#1B3F92#1B3F92

#1B3F92 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.5% C 0.143 H 263.5°. Best body text is #FFFFFF at 9.67:1 contrast (WCAG AA passes).

Color values

HEX	#1B3F92
RGB	rgb(27, 63, 146)
HSL	hsl(222, 69%, 34%)
HSV	hsv(222, 82%, 57%)
CMYK	cmyk(81.5%, 56.8%, 0%, 42.7%)
CIE-LAB	lab(29.06, 19.42, -49.38)
CIE-LCH	lch(29.06, 53.06, 291.47°)
OKLab	oklab(39.54% -0.0162 -0.1425)
OKLCH	oklch(39.54% 0.143 263.5)
XYZ	xyz(7.4160, 5.8625, 27.9293)
Luminance	0.0586 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3F92 #926E1B

analogous

#1B7B92 #1B3F92 #331B92

triadic

#1B3F92 #921B3F #3F921B

tetradic

#1B3F92 #921B7B #926E1B #1B9233

square

#1B3F92 #921B7B #926E1B #1B9233

split-complementary

#1B3F92 #92331B #7B921B

monochromatic

#08122B #11295E #1B3F92 #2555C6 #4A77DE

Accessibility & contrast

On white

9.67

#1B3F92 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#1B3F92 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3F92

9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3F92	#FFFFFF	#000000	##FFFFFF
##1B3F92	1.00	9.67	2.17	9.67
#FFFFFF	9.67	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A95

Deuteranopia (green-blind)

#003F90

Tritanopia (blue-blind)

#005462

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1b3f92;
/* rgb */ color: rgb(27, 63, 146);
/* oklch */ color: oklch(39.5% 0.143 263.5);

Tailwind

colors: {
  custom: {
    50: '#6c73b3',
    500: '#1b3f92',
    950: '#000000',
  },
}

SCSS

$custom: #1b3f92;
$custom-light: #6c73b3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3f92",
  "rgb": {
    "r": 27,
    "g": 63,
    "b": 146
  },
  "hsl": {
    "h": 221.849,
    "s": 68.786,
    "l": 33.922
  },
  "oklch": {
    "l": 0.3954,
    "c": 0.14345,
    "h": 263.5
  },
  "luminance": 0.05863
}

Semantic roles & 50–950 ramp

primary

#1B3F92

secondary

#BF9C49

accent

#B73CEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B3F92

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

Preview Lab → · Contrast checker → · Palette generator →