#1B3F95#1B3F95

#1B3F95 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 39.8% C 0.148 H 263.8°. Best body text is #FFFFFF at 9.58:1 contrast (WCAG AA passes).

Color values

HEX	#1B3F95
RGB	rgb(27, 63, 149)
HSL	hsl(222, 69%, 35%)
HSV	hsv(222, 82%, 58%)
CMYK	cmyk(81.9%, 57.7%, 0%, 41.6%)
CIE-LAB	lab(29.30, 20.63, -50.83)
CIE-LCH	lch(29.30, 54.85, 292.09°)
OKLab	oklab(39.8% -0.016 -0.1468)
OKLCH	oklch(39.8% 0.148 263.8)
XYZ	xyz(7.6524, 5.9570, 29.1745)
Luminance	0.0596 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3F95 #95711B

analogous

#1B7C95 #1B3F95 #341B95

triadic

#1B3F95 #951B3F #3F951B

tetradic

#1B3F95 #951B7C #95711B #1B9534

square

#1B3F95 #951B7C #95711B #1B9534

split-complementary

#1B3F95 #95341B #7C951B

monochromatic

#08132D #122961 #1B3F95 #2455C9 #4C77DF

Accessibility & contrast

On white

9.58

#1B3F95 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#1B3F95 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3F95

9.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3F95	#FFFFFF	#000000	##FFFFFF
##1B3F95	1.00	9.58	2.19	9.58
#FFFFFF	9.58	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B98

Deuteranopia (green-blind)

#004093

Tritanopia (blue-blind)

#005563

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1b3f95;
/* rgb */ color: rgb(27, 63, 149);
/* oklch */ color: oklch(39.8% 0.148 263.8);

Tailwind

colors: {
  custom: {
    50: '#6d73b5',
    500: '#1b3f95',
    950: '#000000',
  },
}

SCSS

$custom: #1b3f95;
$custom-light: #6d73b5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3f95",
  "rgb": {
    "r": 27,
    "g": 63,
    "b": 149
  },
  "hsl": {
    "h": 222.295,
    "s": 69.318,
    "l": 34.51
  },
  "oklch": {
    "l": 0.39797,
    "c": 0.14765,
    "h": 263.8
  },
  "luminance": 0.05958
}

Semantic roles & 50–950 ramp

primary

#1B3F95

secondary

#C19E4B

accent

#B83CEC

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B3F95

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

Preview Lab → · Contrast checker → · Palette generator →