#10307E#10307E

#10307E is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.2% C 0.137 H 263.7°. Best body text is #FFFFFF at 12.03:1 contrast (WCAG AA passes).

Color values

HEX#10307E
RGBrgb(16, 48, 126)
HSLhsl(223, 77%, 28%)
HSVhsv(223, 87%, 49%)
CMYKcmyk(87.3%, 61.9%, 0%, 50.6%)
CIE-LABlab(22.76, 20.73, -47.22)
CIE-LCHlch(22.76, 51.57, 293.70°)
OKLaboklab(34.17% -0.0151 -0.1366)
OKLCHoklch(34.17% 0.137 263.7)
XYZxyz(5.0352, 3.7298, 20.1892)
Luminance0.0373 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#10307E #7E5E10
analogous
#10677E #10307E #27107E
triadic
#10307E #7E1030 #307E10
tetradic
#10307E #7E1067 #7E5E10 #107E27
square
#10307E #7E1067 #7E5E10 #107E27
split-complementary
#10307E #7E2710 #677E10
monochromatic
#030A1B #091B48 #10307E #1745B4 #255CE3

Accessibility & contrast

On white

12.03
#10307E on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.75
#10307E on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10307E
12.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##10307E#FFFFFF#000000##FFFFFF
##10307E1.0012.031.7512.03
#FFFFFF12.031.0021.001.00
#0000001.7521.001.0021.00
##FFFFFF12.031.0021.001.00

Color blindness preview

Protanopia (red-blind)
#003C81
Deuteranopia (green-blind)
#00317D
Tritanopia (blue-blind)
#004452
Achromatopsia (no color)
#363636

Design tokens & code

CSS
--color: #10307e;
/* rgb */ color: rgb(16, 48, 126);
/* oklch */ color: oklch(34.2% 0.137 263.7);
Tailwind
colors: {
  custom: {
    50: '#6567a4',
    500: '#10307e',
    950: '#000000',
  },
}
SCSS
$custom: #10307e;
$custom-light: #6567a4;
$custom-dark: #000000;
JSON
{
  "hex": "#10307e",
  "rgb": {
    "r": 16,
    "g": 48,
    "b": 126
  },
  "hsl": {
    "h": 222.545,
    "s": 77.465,
    "l": 27.843
  },
  "oklch": {
    "l": 0.34171,
    "c": 0.13747,
    "h": 263.7
  },
  "luminance": 0.0373
}

Semantic roles & 50–950 ramp

primary
#10307E
secondary
#B48F36
accent
#BC34F4
background
#F6F6FA
surface
#EBEBF4
border
#C6C6CE
text
#07060F
muted
#7A7A7F

Preview Lab

Preview with #10307E

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

Preview Lab → · Contrast checker → · Palette generator →

#10307E Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva