#10428D#10428D

#10428D is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.5% C 0.135 H 259.2°. Best body text is #FFFFFF at 9.61:1 contrast (WCAG AA passes).

Color values

HEX	#10428D
RGB	rgb(16, 66, 141)
HSL	hsl(216, 80%, 31%)
HSV	hsv(216, 89%, 55%)
CMYK	cmyk(88.7%, 53.2%, 0%, 44.7%)
CIE-LAB	lab(29.23, 14.30, -46.05)
CIE-LCH	lch(29.23, 48.22, 287.25°)
OKLab	oklab(39.46% -0.0254 -0.1328)
OKLCH	oklch(39.46% 0.135 259.2)
XYZ	xyz(6.9679, 5.9288, 25.9713)
Luminance	0.0593 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10428D #8D5B10

analogous

#10808D #10428D #1C108D

triadic

#10428D #8D1042 #428D10

tetradic

#10428D #8D1080 #8D5B10 #108D1C

square

#10428D #8D1080 #8D5B10 #108D1C

split-complementary

#10428D #8D1C10 #808D10

monochromatic

#040F1F #0A2856 #10428D #165CC4 #3079E7

Accessibility & contrast

On white

9.61

#10428D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#10428D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10428D

9.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10428D	#FFFFFF	#000000	##FFFFFF
##10428D	1.00	9.61	2.19	9.61
#FFFFFF	9.61	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C4B90

Deuteranopia (green-blind)

#00408C

Tritanopia (blue-blind)

#005461

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #10428d;
/* rgb */ color: rgb(16, 66, 141);
/* oklch */ color: oklch(39.5% 0.135 259.2);

Tailwind

colors: {
  custom: {
    50: '#6875af',
    500: '#10428d',
    950: '#000000',
  },
}

SCSS

$custom: #10428d;
$custom-light: #6875af;
$custom-dark: #000000;

JSON

{
  "hex": "#10428d",
  "rgb": {
    "r": 16,
    "g": 66,
    "b": 141
  },
  "hsl": {
    "h": 216,
    "s": 79.618,
    "l": 30.784
  },
  "oklch": {
    "l": 0.39457,
    "c": 0.13522,
    "h": 259.2
  },
  "luminance": 0.0593
}

Semantic roles & 50–950 ramp

primary

#10428D

secondary

#C28A37

accent

#A832F6

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #10428D

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

Preview Lab → · Contrast checker → · Palette generator →