#1B458D#1B458D

#1B458D is a dark, vivid blue. Relative luminance 0.064; OKLCH L 40.5% C 0.129 H 260.5°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#1B458D
RGB	rgb(27, 69, 141)
HSL	hsl(218, 68%, 33%)
HSV	hsv(218, 81%, 55%)
CMYK	cmyk(80.9%, 51.1%, 0%, 44.7%)
CIE-LAB	lab(30.43, 13.25, -44.10)
CIE-LCH	lch(30.43, 46.05, 286.72°)
OKLab	oklab(40.46% -0.0213 -0.1269)
OKLCH	oklch(40.46% 0.129 260.5)
XYZ	xyz(7.3861, 6.4115, 26.0424)
Luminance	0.0641 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B458D #8D631B

analogous

#1B7E8D #1B458D #2A1B8D

triadic

#1B458D #8D1B45 #458D1B

tetradic

#1B458D #8D1B7E #8D631B #1B8D2A

square

#1B458D #8D1B7E #8D631B #1B8D2A

split-complementary

#1B458D #8D2A1B #7E8D1B

monochromatic

#071326 #112C5A #1B458D #255EC0 #477EDC

Accessibility & contrast

On white

9.20

#1B458D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#1B458D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B458D

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B458D	#FFFFFF	#000000	##FFFFFF
##1B458D	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#194D90

Deuteranopia (green-blind)

#00438C

Tritanopia (blue-blind)

#005662

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b458d;
/* rgb */ color: rgb(27, 69, 141);
/* oklch */ color: oklch(40.5% 0.129 260.5);

Tailwind

colors: {
  custom: {
    50: '#6b78af',
    500: '#1b458d',
    950: '#000000',
  },
}

SCSS

$custom: #1b458d;
$custom-light: #6b78af;
$custom-dark: #000000;

JSON

{
  "hex": "#1b458d",
  "rgb": {
    "r": 27,
    "g": 69,
    "b": 141
  },
  "hsl": {
    "h": 217.895,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.40458,
    "c": 0.12866,
    "h": 260.5
  },
  "luminance": 0.06412
}

Semantic roles & 50–950 ramp

primary

#1B458D

secondary

#BD9246

accent

#AB3DEB

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1B458D

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

Preview Lab → · Contrast checker → · Palette generator →