#1B4BA0#1B4BA0

#1B4BA0 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 43.3% C 0.148 H 260.9°. Best body text is #FFFFFF at 8.20:1 contrast (WCAG AA passes).

Color values

HEX	#1B4BA0
RGB	rgb(27, 75, 160)
HSL	hsl(218, 71%, 37%)
HSV	hsv(218, 83%, 63%)
CMYK	cmyk(83.1%, 53.1%, 0%, 37.3%)
CIE-LAB	lab(33.57, 16.84, -50.58)
CIE-LCH	lch(33.57, 53.31, 288.41°)
OKLab	oklab(43.3% -0.0234 -0.1458)
OKLCH	oklch(43.3% 0.148 260.9)
XYZ	xyz(9.3109, 7.8021, 34.2661)
Luminance	0.0780 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4BA0 #A0701B

analogous

#1B8EA0 #1B4BA0 #2E1BA0

triadic

#1B4BA0 #A01B4B #4BA01B

tetradic

#1B4BA0 #A01B8E #A0701B #1BA02E

square

#1B4BA0 #A01B8E #A0701B #1BA02E

split-complementary

#1B4BA0 #A02E1B #8EA01B

monochromatic

#091A37 #12326C #1B4BA0 #2464D4 #5387E2

Accessibility & contrast

On white

8.20

#1B4BA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#1B4BA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4BA0

8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4BA0	#FFFFFF	#000000	##FFFFFF
##1B4BA0	1.00	8.20	2.56	8.20
#FFFFFF	8.20	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C55A3

Deuteranopia (green-blind)

#00499E

Tritanopia (blue-blind)

#00606E

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1b4ba0;
/* rgb */ color: rgb(27, 75, 160);
/* oklch */ color: oklch(43.3% 0.148 260.9);

Tailwind

colors: {
  custom: {
    50: '#6f7cbd',
    500: '#1b4ba0',
    950: '#000000',
  },
}

SCSS

$custom: #1b4ba0;
$custom-light: #6f7cbd;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4ba0",
  "rgb": {
    "r": 27,
    "g": 75,
    "b": 160
  },
  "hsl": {
    "h": 218.346,
    "s": 71.123,
    "l": 36.667
  },
  "oklch": {
    "l": 0.43296,
    "c": 0.14769,
    "h": 260.9
  },
  "luminance": 0.07803
}

Semantic roles & 50–950 ramp

primary

#1B4BA0

secondary

#C59B52

accent

#AD3AEE

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1B4BA0

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

Preview Lab → · Contrast checker → · Palette generator →