#1B3495#1B3495

#1B3495 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.6% C 0.161 H 266.8°. Best body text is #FFFFFF at 10.65:1 contrast (WCAG AA passes).

Color values

HEX	#1B3495
RGB	rgb(27, 52, 149)
HSL	hsl(228, 69%, 35%)
HSV	hsv(228, 82%, 58%)
CMYK	cmyk(81.9%, 65.1%, 0%, 41.6%)
CIE-LAB	lab(26.33, 28.16, -55.69)
CIE-LCH	lch(26.33, 62.41, 296.83°)
OKLab	oklab(37.58% -0.0091 -0.1612)
OKLCH	oklch(37.58% 0.161 266.8)
XYZ	xyz(7.1029, 4.8581, 28.9913)
Luminance	0.0486 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B3495 #957C1B

analogous

#1B7195 #1B3495 #3F1B95

triadic

#1B3495 #951B34 #34951B

tetradic

#1B3495 #951B71 #957C1B #1B953F

square

#1B3495 #951B71 #957C1B #1B953F

split-complementary

#1B3495 #953F1B #71951B

monochromatic

#08102D #122261 #1B3495 #2446C9 #4C6ADF

Accessibility & contrast

On white

10.65

#1B3495 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#1B3495 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B3495

10.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B3495	#FFFFFF	#000000	##FFFFFF
##1B3495	1.00	10.65	1.97	10.65
#FFFFFF	10.65	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004498

Deuteranopia (green-blind)

#003993

Tritanopia (blue-blind)

#004E5F

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1b3495;
/* rgb */ color: rgb(27, 52, 149);
/* oklch */ color: oklch(37.6% 0.161 266.8);

Tailwind

colors: {
  custom: {
    50: '#6e6bb5',
    500: '#1b3495',
    950: '#000000',
  },
}

SCSS

$custom: #1b3495;
$custom-light: #6e6bb5;
$custom-dark: #000000;

JSON

{
  "hex": "#1b3495",
  "rgb": {
    "r": 27,
    "g": 52,
    "b": 149
  },
  "hsl": {
    "h": 227.705,
    "s": 69.318,
    "l": 34.51
  },
  "oklch": {
    "l": 0.37577,
    "c": 0.16146,
    "h": 266.8
  },
  "luminance": 0.04859
}

Semantic roles & 50–950 ramp

primary

#1B3495

secondary

#C1A94B

accent

#C83CEC

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1B3495

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

Preview Lab → · Contrast checker → · Palette generator →