#1B4EA1#1B4EA1

#1B4EA1 is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.0% C 0.145 H 259.9°. Best body text is #FFFFFF at 7.92:1 contrast (WCAG AA passes).

Color values

HEX	#1B4EA1
RGB	rgb(27, 78, 161)
HSL	hsl(217, 71%, 37%)
HSV	hsv(217, 83%, 63%)
CMYK	cmyk(83.2%, 51.6%, 0%, 36.9%)
CIE-LAB	lab(34.51, 15.21, -49.66)
CIE-LCH	lch(34.51, 51.94, 287.03°)
OKLab	oklab(44.04% -0.0254 -0.143)
OKLCH	oklch(44.04% 0.145 259.9)
XYZ	xyz(9.6071, 8.2538, 34.7981)
Luminance	0.0825 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4EA1 #A16E1B

analogous

#1B91A1 #1B4EA1 #2B1BA1

triadic

#1B4EA1 #A11B4E #4EA11B

tetradic

#1B4EA1 #A11B91 #A16E1B #1BA12B

square

#1B4EA1 #A11B91 #A16E1B #1BA12B

split-complementary

#1B4EA1 #A12B1B #91A11B

monochromatic

#091B38 #12356D #1B4EA1 #2467D5 #548AE2

Accessibility & contrast

On white

7.92

#1B4EA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#1B4EA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4EA1

7.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4EA1	#FFFFFF	#000000	##FFFFFF
##1B4EA1	1.00	7.92	2.65	7.92
#FFFFFF	7.92	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1758A4

Deuteranopia (green-blind)

#004B9F

Tritanopia (blue-blind)

#006270

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1b4ea1;
/* rgb */ color: rgb(27, 78, 161);
/* oklch */ color: oklch(44.0% 0.145 259.9);

Tailwind

colors: {
  custom: {
    50: '#6f7ebd',
    500: '#1b4ea1',
    950: '#000000',
  },
}

SCSS

$custom: #1b4ea1;
$custom-light: #6f7ebd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4ea1",
  "rgb": {
    "r": 27,
    "g": 78,
    "b": 161
  },
  "hsl": {
    "h": 217.164,
    "s": 71.277,
    "l": 36.863
  },
  "oklch": {
    "l": 0.44036,
    "c": 0.1453,
    "h": 259.9
  },
  "luminance": 0.08255
}

Semantic roles & 50–950 ramp

primary

#1B4EA1

secondary

#C59A52

accent

#A93AEE

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1B4EA1

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

Preview Lab → · Contrast checker → · Palette generator →