#1043B4#1043B4

#1043B4 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.1% C 0.187 H 262.9°. Best body text is #FFFFFF at 8.45:1 contrast (WCAG AA passes).

Color values

HEX	#1043B4
RGB	rgb(16, 67, 180)
HSL	hsl(221, 84%, 38%)
HSV	hsv(221, 91%, 71%)
CMYK	cmyk(91.1%, 62.8%, 0%, 29.4%)
CIE-LAB	lab(32.74, 29.49, -63.89)
CIE-LCH	lch(32.74, 70.36, 294.78°)
OKLab	oklab(43.11% -0.0231 -0.1851)
OKLCH	oklch(43.11% 0.187 262.9)
XYZ	xyz(10.4561, 7.4184, 44.0520)
Luminance	0.0742 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1043B4 #B48110

analogous

#1095B4 #1043B4 #2F10B4

triadic

#1043B4 #B41043 #43B410

tetradic

#1043B4 #B41095 #B48110 #10B42F

square

#1043B4 #B41095 #B48110 #10B42F

split-complementary

#1043B4 #B42F10 #95B410

monochromatic

#061944 #0B2E7C #1043B4 #1759EA #4F81EF

Accessibility & contrast

On white

8.45

#1043B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#1043B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1043B4

8.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1043B4	#FFFFFF	#000000	##FFFFFF
##1043B4	1.00	8.45	2.48	8.45
#FFFFFF	8.45	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B8

Deuteranopia (green-blind)

#0046B2

Tritanopia (blue-blind)

#006175

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1043b4;
/* rgb */ color: rgb(16, 67, 180);
/* oklch */ color: oklch(43.1% 0.187 262.9);

Tailwind

colors: {
  custom: {
    50: '#7376cb',
    500: '#1043b4',
    950: '#000000',
  },
}

SCSS

$custom: #1043b4;
$custom-light: #7376cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1043b4",
  "rgb": {
    "r": 16,
    "g": 67,
    "b": 180
  },
  "hsl": {
    "h": 221.341,
    "s": 83.673,
    "l": 38.431
  },
  "oklch": {
    "l": 0.43107,
    "c": 0.18658,
    "h": 262.9
  },
  "luminance": 0.0742
}

Semantic roles & 50–950 ramp

primary

#1043B4

secondary

#D1A84F

accent

#BA2EFA

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #1043B4

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

Preview Lab → · Contrast checker → · Palette generator →