#1B3395#1B3395

#1B3395 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.4% C 0.163 H 267.0°. Best body text is #FFFFFF at 10.75:1 contrast (WCAG AA passes).

Color values

HEX	#1B3395
RGB	rgb(27, 51, 149)
HSL	hsl(228, 69%, 35%)
HSV	hsv(228, 82%, 58%)
CMYK	cmyk(81.9%, 65.8%, 0%, 41.6%)
CIE-LAB	lab(26.07, 28.84, -56.11)
CIE-LCH	lch(26.07, 63.09, 297.20°)
OKLab	oklab(37.39% -0.0086 -0.1624)
OKLCH	oklch(37.39% 0.163 267)
XYZ	xyz(7.0587, 4.7698, 28.9766)
Luminance	0.0477 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3395 #957D1B

analogous

#1B7095 #1B3395 #401B95

triadic

#1B3395 #951B33 #33951B

tetradic

#1B3395 #951B70 #957D1B #1B9540

square

#1B3395 #951B70 #957D1B #1B9540

split-complementary

#1B3395 #95401B #70951B

monochromatic

#08102D #122161 #1B3395 #2445C9 #4C69DF

Accessibility & contrast

On white

10.75

#1B3395 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#1B3395 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3395

10.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3395	#FFFFFF	#000000	##FFFFFF
##1B3395	1.00	10.75	1.95	10.75
#FFFFFF	10.75	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004498

Deuteranopia (green-blind)

#003893

Tritanopia (blue-blind)

#004D5F

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1b3395;
/* rgb */ color: rgb(27, 51, 149);
/* oklch */ color: oklch(37.4% 0.163 267.0);

Tailwind

colors: {
  custom: {
    50: '#6e6ab5',
    500: '#1b3395',
    950: '#000000',
  },
}

SCSS

$custom: #1b3395;
$custom-light: #6e6ab5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3395",
  "rgb": {
    "r": 27,
    "g": 51,
    "b": 149
  },
  "hsl": {
    "h": 228.197,
    "s": 69.318,
    "l": 34.51
  },
  "oklch": {
    "l": 0.37387,
    "c": 0.16268,
    "h": 267
  },
  "luminance": 0.04771
}

Semantic roles & 50–950 ramp

primary

#1B3395

secondary

#C1AA4B

accent

#C93CEC

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1B3395

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

Preview Lab → · Contrast checker → · Palette generator →