#1B4AA8#1B4AA8

#1B4AA8 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 43.7% C 0.160 H 262.1°. Best body text is #FFFFFF at 8.10:1 contrast (WCAG AA passes).

Color values

HEX	#1B4AA8
RGB	rgb(27, 74, 168)
HSL	hsl(220, 72%, 38%)
HSV	hsv(220, 84%, 66%)
CMYK	cmyk(83.9%, 56%, 0%, 34.1%)
CIE-LAB	lab(33.89, 20.72, -54.85)
CIE-LCH	lch(33.89, 58.63, 290.70°)
OKLab	oklab(43.74% -0.0219 -0.1584)
OKLCH	oklch(43.74% 0.16 262.1)
XYZ	xyz(9.9661, 7.9565, 38.0487)
Luminance	0.0796 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4AA8 #A8791B

analogous

#1B90A8 #1B4AA8 #321BA8

triadic

#1B4AA8 #A81B4A #4AA81B

tetradic

#1B4AA8 #A81B90 #A8791B #1BA832

square

#1B4AA8 #A81B90 #A8791B #1BA832

split-complementary

#1B4AA8 #A8321B #90A81B

monochromatic

#0A1C3F #133373 #1B4AA8 #2462DC #5987E4

Accessibility & contrast

On white

8.10

#1B4AA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#1B4AA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4AA8

8.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4AA8	#FFFFFF	#000000	##FFFFFF
##1B4AA8	1.00	8.10	2.59	8.10
#FFFFFF	8.10	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056AB

Deuteranopia (green-blind)

#004AA6

Tritanopia (blue-blind)

#006171

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1b4aa8;
/* rgb */ color: rgb(27, 74, 168);
/* oklch */ color: oklch(43.7% 0.160 262.1);

Tailwind

colors: {
  custom: {
    50: '#717bc3',
    500: '#1b4aa8',
    950: '#000000',
  },
}

SCSS

$custom: #1b4aa8;
$custom-light: #717bc3;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4aa8",
  "rgb": {
    "r": 27,
    "g": 74,
    "b": 168
  },
  "hsl": {
    "h": 220,
    "s": 72.308,
    "l": 38.235
  },
  "oklch": {
    "l": 0.43735,
    "c": 0.15991,
    "h": 262.1
  },
  "luminance": 0.07958
}

Semantic roles & 50–950 ramp

primary

#1B4AA8

secondary

#C8A257

accent

#B239EF

background

#F7F7FC

surface

#EDEDF8

border

#C8C8D1

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1B4AA8

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

Preview Lab → · Contrast checker → · Palette generator →