#1B458E#1B458E

#1B458E is a dark, vivid blue. Relative luminance 0.064; OKLCH L 40.5% C 0.130 H 260.6°. Best body text is #FFFFFF at 9.18:1 contrast (WCAG AA passes).

Color values

HEX	#1B458E
RGB	rgb(27, 69, 142)
HSL	hsl(218, 68%, 33%)
HSV	hsv(218, 81%, 56%)
CMYK	cmyk(81%, 51.4%, 0%, 44.3%)
CIE-LAB	lab(30.50, 13.65, -44.60)
CIE-LCH	lch(30.50, 46.64, 287.02°)
OKLab	oklab(40.54% -0.0212 -0.1283)
OKLCH	oklch(40.54% 0.13 260.6)
XYZ	xyz(7.4608, 6.4414, 26.4360)
Luminance	0.0644 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B458E #8E641B

analogous

#1B7E8E #1B458E #2A1B8E

triadic

#1B458E #8E1B45 #458E1B

tetradic

#1B458E #8E1B7E #8E641B #1B8E2A

square

#1B458E #8E1B7E #8E641B #1B8E2A

split-complementary

#1B458E #8E2A1B #7E8E1B

monochromatic

#071327 #112C5B #1B458E #255EC1 #477EDC

Accessibility & contrast

On white

9.18

#1B458E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#1B458E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B458E

9.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B458E	#FFFFFF	#000000	##FFFFFF
##1B458E	1.00	9.18	2.29	9.18
#FFFFFF	9.18	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#184D91

Deuteranopia (green-blind)

#00438D

Tritanopia (blue-blind)

#005762

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b458e;
/* rgb */ color: rgb(27, 69, 142);
/* oklch */ color: oklch(40.5% 0.130 260.6);

Tailwind

colors: {
  custom: {
    50: '#6b78b0',
    500: '#1b458e',
    950: '#000000',
  },
}

SCSS

$custom: #1b458e;
$custom-light: #6b78b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b458e",
  "rgb": {
    "r": 27,
    "g": 69,
    "b": 142
  },
  "hsl": {
    "h": 218.087,
    "s": 68.047,
    "l": 33.137
  },
  "oklch": {
    "l": 0.40536,
    "c": 0.13008,
    "h": 260.6
  },
  "luminance": 0.06442
}

Semantic roles & 50–950 ramp

primary

#1B458E

secondary

#BE9247

accent

#AB3DEB

background

#F6F7FA

surface

#ECEDF5

border

#C7C8CF

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1B458E

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

Preview Lab → · Contrast checker → · Palette generator →