#1B4592#1B4592

#1B4592 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 40.9% C 0.136 H 261.3°. Best body text is #FFFFFF at 9.08:1 contrast (WCAG AA passes).

Color values

HEX	#1B4592
RGB	rgb(27, 69, 146)
HSL	hsl(219, 69%, 34%)
HSV	hsv(219, 82%, 57%)
CMYK	cmyk(81.5%, 52.7%, 0%, 42.7%)
CIE-LAB	lab(30.79, 15.28, -46.58)
CIE-LCH	lch(30.79, 49.02, 288.16°)
OKLab	oklab(40.85% -0.0207 -0.1342)
OKLCH	oklch(40.85% 0.136 261.3)
XYZ	xyz(7.7665, 6.5637, 28.0461)
Luminance	0.0657 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4592 #92681B

analogous

#1B8192 #1B4592 #2D1B92

triadic

#1B4592 #921B45 #45921B

tetradic

#1B4592 #921B81 #92681B #1B922D

square

#1B4592 #921B81 #92681B #1B922D

split-complementary

#1B4592 #922D1B #81921B

monochromatic

#08142B #112D5E #1B4592 #255DC6 #4A7EDE

Accessibility & contrast

On white

9.08

#1B4592 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#1B4592 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4592

9.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4592	#FFFFFF	#000000	##FFFFFF
##1B4592	1.00	9.08	2.31	9.08
#FFFFFF	9.08	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#114E95

Deuteranopia (green-blind)

#004390

Tritanopia (blue-blind)

#005864

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b4592;
/* rgb */ color: rgb(27, 69, 146);
/* oklch */ color: oklch(40.9% 0.136 261.3);

Tailwind

colors: {
  custom: {
    50: '#6c78b3',
    500: '#1b4592',
    950: '#000000',
  },
}

SCSS

$custom: #1b4592;
$custom-light: #6c78b3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4592",
  "rgb": {
    "r": 27,
    "g": 69,
    "b": 146
  },
  "hsl": {
    "h": 218.824,
    "s": 68.786,
    "l": 33.922
  },
  "oklch": {
    "l": 0.40852,
    "c": 0.13575,
    "h": 261.3
  },
  "luminance": 0.06565
}

Semantic roles & 50–950 ramp

primary

#1B4592

secondary

#BF9649

accent

#AE3CEC

background

#F7F7FB

surface

#EDEDF6

border

#C8C8D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #1B4592

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

Preview Lab → · Contrast checker → · Palette generator →