#10203A#10203A

#10203A is a very dark, muted blue. Relative luminance 0.014; OKLCH L 24.5% C 0.054 H 259.7°. Best body text is #FFFFFF at 16.28:1 contrast (WCAG AA passes).

Color values

HEX	#10203A
RGB	rgb(16, 32, 58)
HSL	hsl(217, 57%, 15%)
HSV	hsv(217, 72%, 23%)
CMYK	cmyk(72.4%, 44.8%, 0%, 77.3%)
CIE-LAB	lab(12.28, 3.35, -18.84)
CIE-LCH	lch(12.28, 19.14, 280.10°)
OKLab	oklab(24.47% -0.0098 -0.0535)
OKLCH	oklch(24.47% 0.054 259.7)
XYZ	xyz(1.4936, 1.4485, 4.2030)
Luminance	0.0145 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10203A #3A2A10

analogous

#10353A #10203A #15103A

triadic

#10203A #3A1020 #203A10

tetradic

#10203A #3A1035 #3A2A10 #103A15

square

#10203A #3A1035 #3A2A10 #103A15

split-complementary

#10203A #3A1510 #353A10

monochromatic

#070D18 #070D18 #10203A #1D3A6A #2A559A

Accessibility & contrast

On white

16.28

#10203A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#10203A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10203A

16.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10203A	#FFFFFF	#000000	##FFFFFF
##10203A	1.00	16.28	1.29	16.28
#FFFFFF	16.28	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#15223B

Deuteranopia (green-blind)

#0F1E39

Tritanopia (blue-blind)

#00262A

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #10203a;
/* rgb */ color: rgb(16, 32, 58);
/* oklch */ color: oklch(24.5% 0.054 259.7);

Tailwind

colors: {
  custom: {
    50: '#535b70',
    500: '#10203a',
    950: '#000000',
  },
}

SCSS

$custom: #10203a;
$custom-light: #535b70;
$custom-dark: #000000;

JSON

{
  "hex": "#10203a",
  "rgb": {
    "r": 16,
    "g": 32,
    "b": 58
  },
  "hsl": {
    "h": 217.143,
    "s": 56.757,
    "l": 14.51
  },
  "oklch": {
    "l": 0.24474,
    "c": 0.05441,
    "h": 259.7
  },
  "luminance": 0.01449
}

Semantic roles & 50–950 ramp

primary

#10203A

secondary

#745B32

accent

#A648E0

background

#F4F5F6

surface

#E7E9EC

border

#C3C5C7

text

#030407

muted

#78797A

Preview Lab

Preview with #10203A

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

Preview Lab → · Contrast checker → · Palette generator →