#10307A#10307A

#10307A is a dark, vivid blue. Relative luminance 0.036; OKLCH L 33.8% C 0.132 H 263.3°. Best body text is #FFFFFF at 12.17:1 contrast (WCAG AA passes).

Color values

HEX	#10307A
RGB	rgb(16, 48, 122)
HSL	hsl(222, 77%, 27%)
HSV	hsv(222, 87%, 48%)
CMYK	cmyk(86.9%, 60.7%, 0%, 52.2%)
CIE-LAB	lab(22.40, 19.05, -45.27)
CIE-LCH	lch(22.40, 49.11, 292.83°)
OKLab	oklab(33.8% -0.0153 -0.1309)
OKLCH	oklch(33.8% 0.132 263.3)
XYZ	xyz(4.7822, 3.6286, 18.8569)
Luminance	0.0363 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10307A #7A5A10

analogous

#10657A #10307A #25107A

triadic

#10307A #7A1030 #307A10

tetradic

#10307A #7A1065 #7A5A10 #107A25

square

#10307A #7A1065 #7A5A10 #107A25

split-complementary

#10307A #7A2510 #657A10

monochromatic

#040B1B #091B44 #10307A #1745B0 #225CE2

Accessibility & contrast

On white

12.17

#10307A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#10307A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10307A

12.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10307A	#FFFFFF	#000000	##FFFFFF
##10307A	1.00	12.17	1.73	12.17
#FFFFFF	12.17	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B7C

Deuteranopia (green-blind)

#003179

Tritanopia (blue-blind)

#004350

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #10307a;
/* rgb */ color: rgb(16, 48, 122);
/* oklch */ color: oklch(33.8% 0.132 263.3);

Tailwind

colors: {
  custom: {
    50: '#6467a1',
    500: '#10307a',
    950: '#000000',
  },
}

SCSS

$custom: #10307a;
$custom-light: #6467a1;
$custom-dark: #000000;

JSON

{
  "hex": "#10307a",
  "rgb": {
    "r": 16,
    "g": 48,
    "b": 122
  },
  "hsl": {
    "h": 221.887,
    "s": 76.812,
    "l": 27.059
  },
  "oklch": {
    "l": 0.33796,
    "c": 0.13179,
    "h": 263.3
  },
  "luminance": 0.03629
}

Semantic roles & 50–950 ramp

primary

#10307A

secondary

#B18B35

accent

#BA34F3

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#06060F

muted

#7A7A7F

Preview Lab

Preview with #10307A

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

Preview Lab → · Contrast checker → · Palette generator →