#1B396B#1B396B

#1B396B is a dark, moderate blue. Relative luminance 0.042; OKLCH L 35.1% C 0.094 H 260.0°. Best body text is #FFFFFF at 11.39:1 contrast (WCAG AA passes).

Color values

HEX	#1B396B
RGB	rgb(27, 57, 107)
HSL	hsl(218, 60%, 26%)
HSV	hsv(218, 75%, 42%)
CMYK	cmyk(74.8%, 46.7%, 0%, 58%)
CIE-LAB	lab(24.39, 7.71, -32.46)
CIE-LCH	lch(24.39, 33.36, 283.36°)
OKLab	oklab(35.06% -0.0163 -0.0929)
OKLCH	oklch(35.06% 0.094 260)
XYZ	xyz(4.5680, 4.2203, 14.4809)
Luminance	0.0422 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B396B #6B4D1B

analogous

#1B616B #1B396B #251B6B

triadic

#1B396B #6B1B39 #396B1B

tetradic

#1B396B #6B1B61 #6B4D1B #1B6B25

square

#1B396B #6B1B61 #6B4D1B #1B6B25

split-complementary

#1B396B #6B251B #616B1B

monochromatic

#060D18 #0F1F3A #1B396B #27539C #356DCC

Accessibility & contrast

On white

11.39

#1B396B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#1B396B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B396B

11.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B396B	#FFFFFF	#000000	##FFFFFF
##1B396B	1.00	11.39	1.84	11.39
#FFFFFF	11.39	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#203E6D

Deuteranopia (green-blind)

#11376A

Tritanopia (blue-blind)

#00454C

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1b396b;
/* rgb */ color: rgb(27, 57, 107);
/* oklch */ color: oklch(35.1% 0.094 260.0);

Tailwind

colors: {
  custom: {
    50: '#636e96',
    500: '#1b396b',
    950: '#000000',
  },
}

SCSS

$custom: #1b396b;
$custom-light: #636e96;
$custom-dark: #000000;

JSON

{
  "hex": "#1b396b",
  "rgb": {
    "r": 27,
    "g": 57,
    "b": 107
  },
  "hsl": {
    "h": 217.5,
    "s": 59.701,
    "l": 26.275
  },
  "oklch": {
    "l": 0.35056,
    "c": 0.09428,
    "h": 260
  },
  "luminance": 0.04221
}

Semantic roles & 50–950 ramp

primary

#1B396B

secondary

#A07D42

accent

#A845E3

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #1B396B

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

Preview Lab → · Contrast checker → · Palette generator →