#10338D#10338D

#10338D is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.2% C 0.154 H 263.9°. Best body text is #FFFFFF at 11.17:1 contrast (WCAG AA passes).

Color values

HEX	#10338D
RGB	rgb(16, 51, 141)
HSL	hsl(223, 80%, 31%)
HSV	hsv(223, 89%, 55%)
CMYK	cmyk(88.7%, 63.8%, 0%, 44.7%)
CIE-LAB	lab(24.95, 24.79, -53.02)
CIE-LCH	lch(24.95, 58.53, 295.06°)
OKLab	oklab(36.23% -0.0163 -0.1536)
OKLCH	oklch(36.23% 0.154 263.9)
XYZ	xyz(6.2035, 4.4001, 25.7165)
Luminance	0.0440 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10338D #8D6A10

analogous

#10718D #10338D #2B108D

triadic

#10338D #8D1033 #338D10

tetradic

#10338D #8D1071 #8D6A10 #108D2B

square

#10338D #8D1071 #8D6A10 #108D2B

split-complementary

#10338D #8D2B10 #718D10

monochromatic

#040B1F #0A1F56 #10338D #1647C4 #3063E7

Accessibility & contrast

On white

11.17

#10338D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#10338D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10338D

11.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10338D	#FFFFFF	#000000	##FFFFFF
##10338D	1.00	11.17	1.88	11.17
#FFFFFF	11.17	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004190

Deuteranopia (green-blind)

#00368B

Tritanopia (blue-blind)

#004B5B

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #10338d;
/* rgb */ color: rgb(16, 51, 141);
/* oklch */ color: oklch(36.2% 0.154 263.9);

Tailwind

colors: {
  custom: {
    50: '#696aaf',
    500: '#10338d',
    950: '#000000',
  },
}

SCSS

$custom: #10338d;
$custom-light: #696aaf;
$custom-dark: #000000;

JSON

{
  "hex": "#10338d",
  "rgb": {
    "r": 16,
    "g": 51,
    "b": 141
  },
  "hsl": {
    "h": 223.2,
    "s": 79.618,
    "l": 30.784
  },
  "oklch": {
    "l": 0.36229,
    "c": 0.15444,
    "h": 263.9
  },
  "luminance": 0.04401
}

Semantic roles & 50–950 ramp

primary

#10338D

secondary

#C29B37

accent

#BF32F6

background

#F6F6FA

surface

#ECEBF5

border

#C7C6CF

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #10338D

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

Preview Lab → · Contrast checker → · Palette generator →