#10347F#10347F

#10347F is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.1% C 0.134 H 262.5°. Best body text is #FFFFFF at 11.54:1 contrast (WCAG AA passes).

Color values

HEX	#10347F
RGB	rgb(16, 52, 127)
HSL	hsl(221, 78%, 28%)
HSV	hsv(221, 87%, 50%)
CMYK	cmyk(87.4%, 59.1%, 0%, 50.2%)
CIE-LAB	lab(23.99, 18.29, -45.84)
CIE-LCH	lch(23.99, 49.36, 291.76°)
OKLab	oklab(35.13% -0.0175 -0.1325)
OKLCH	oklch(35.13% 0.134 262.5)
XYZ	xyz(5.2711, 4.0978, 20.5877)
Luminance	0.0410 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10347F #7F5B10

analogous

#106B7F #10347F #24107F

triadic

#10347F #7F1034 #347F10

tetradic

#10347F #7F106B #7F5B10 #107F24

square

#10347F #7F106B #7F5B10 #107F24

split-complementary

#10347F #7F2410 #6B7F10

monochromatic

#030B1B #091E49 #10347F #174AB5 #2663E4

Accessibility & contrast

On white

11.54

#10347F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#10347F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10347F

11.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10347F	#FFFFFF	#000000	##FFFFFF
##10347F	1.00	11.54	1.82	11.54
#FFFFFF	11.54	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E82

Deuteranopia (green-blind)

#00347E

Tritanopia (blue-blind)

#004754

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #10347f;
/* rgb */ color: rgb(16, 52, 127);
/* oklch */ color: oklch(35.1% 0.134 262.5);

Tailwind

colors: {
  custom: {
    50: '#656aa5',
    500: '#10347f',
    950: '#000000',
  },
}

SCSS

$custom: #10347f;
$custom-light: #656aa5;
$custom-dark: #000000;

JSON

{
  "hex": "#10347f",
  "rgb": {
    "r": 16,
    "g": 52,
    "b": 127
  },
  "hsl": {
    "h": 220.541,
    "s": 77.622,
    "l": 28.039
  },
  "oklch": {
    "l": 0.35125,
    "c": 0.13365,
    "h": 262.5
  },
  "luminance": 0.04098
}

Semantic roles & 50–950 ramp

primary

#10347F

secondary

#B58C36

accent

#B634F4

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #10347F

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

Preview Lab → · Contrast checker → · Palette generator →