#1B3795#1B3795

#1B3795 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 38.2% C 0.158 H 266.0°. Best body text is #FFFFFF at 10.36:1 contrast (WCAG AA passes).

Color values

HEX	#1B3795
RGB	rgb(27, 55, 149)
HSL	hsl(226, 69%, 35%)
HSV	hsv(226, 82%, 58%)
CMYK	cmyk(81.9%, 63.1%, 0%, 41.6%)
CIE-LAB	lab(27.11, 26.12, -54.40)
CIE-LCH	lch(27.11, 60.35, 295.65°)
OKLab	oklab(38.16% -0.0109 -0.1574)
OKLCH	oklch(38.16% 0.158 266)
XYZ	xyz(7.2411, 5.1345, 29.0374)
Luminance	0.0513 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3795 #95791B

analogous

#1B7495 #1B3795 #3C1B95

triadic

#1B3795 #951B37 #37951B

tetradic

#1B3795 #951B74 #95791B #1B953C

square

#1B3795 #951B74 #95791B #1B953C

split-complementary

#1B3795 #953C1B #74951B

monochromatic

#08112D #122461 #1B3795 #244AC9 #4C6EDF

Accessibility & contrast

On white

10.36

#1B3795 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#1B3795 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3795

10.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3795	#FFFFFF	#000000	##FFFFFF
##1B3795	1.00	10.36	2.03	10.36
#FFFFFF	10.36	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004698

Deuteranopia (green-blind)

#003A93

Tritanopia (blue-blind)

#004F60

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1b3795;
/* rgb */ color: rgb(27, 55, 149);
/* oklch */ color: oklch(38.2% 0.158 266.0);

Tailwind

colors: {
  custom: {
    50: '#6e6db5',
    500: '#1b3795',
    950: '#000000',
  },
}

SCSS

$custom: #1b3795;
$custom-light: #6e6db5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3795",
  "rgb": {
    "r": 27,
    "g": 55,
    "b": 149
  },
  "hsl": {
    "h": 226.23,
    "s": 69.318,
    "l": 34.51
  },
  "oklch": {
    "l": 0.3816,
    "c": 0.15776,
    "h": 266
  },
  "luminance": 0.05135
}

Semantic roles & 50–950 ramp

primary

#1B3795

secondary

#C1A64B

accent

#C43CEC

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #1B3795

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

Preview Lab → · Contrast checker → · Palette generator →