#10307C#10307C

#10307C is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.0% C 0.135 H 263.5°. Best body text is #FFFFFF at 12.10:1 contrast (WCAG AA passes).

Color values

HEX	#10307C
RGB	rgb(16, 48, 124)
HSL	hsl(222, 77%, 27%)
HSV	hsv(222, 87%, 49%)
CMYK	cmyk(87.1%, 61.3%, 0%, 51.4%)
CIE-LAB	lab(22.58, 19.89, -46.25)
CIE-LCH	lch(22.58, 50.35, 293.27°)
OKLab	oklab(33.98% -0.0152 -0.1338)
OKLCH	oklch(33.98% 0.135 263.5)
XYZ	xyz(4.9074, 3.6787, 19.5163)
Luminance	0.0368 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10307C #7C5C10

analogous

#10667C #10307C #26107C

triadic

#10307C #7C1030 #307C10

tetradic

#10307C #7C1066 #7C5C10 #107C26

square

#10307C #7C1066 #7C5C10 #107C26

split-complementary

#10307C #7C2610 #667C10

monochromatic

#030A1B #091B46 #10307C #1745B2 #245CE3

Accessibility & contrast

On white

12.10

#10307C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#10307C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10307C

12.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10307C	#FFFFFF	#000000	##FFFFFF
##10307C	1.00	12.10	1.74	12.10
#FFFFFF	12.10	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B7F

Deuteranopia (green-blind)

#00317B

Tritanopia (blue-blind)

#004351

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #10307c;
/* rgb */ color: rgb(16, 48, 124);
/* oklch */ color: oklch(34.0% 0.135 263.5);

Tailwind

colors: {
  custom: {
    50: '#6467a3',
    500: '#10307c',
    950: '#000000',
  },
}

SCSS

$custom: #10307c;
$custom-light: #6467a3;
$custom-dark: #000000;

JSON

{
  "hex": "#10307c",
  "rgb": {
    "r": 16,
    "g": 48,
    "b": 124
  },
  "hsl": {
    "h": 222.222,
    "s": 77.143,
    "l": 27.451
  },
  "oklch": {
    "l": 0.33983,
    "c": 0.13464,
    "h": 263.5
  },
  "luminance": 0.03679
}

Semantic roles & 50–950 ramp

primary

#10307C

secondary

#B28D35

accent

#BB34F4

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#06060F

muted

#7A7A7F

Preview Lab

Preview with #10307C

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

Preview Lab → · Contrast checker → · Palette generator →