#103F5F#103F5F

#103F5F is a dark, moderate cyan. Relative luminance 0.045; OKLCH L 35.4% C 0.074 H 243.2°. Best body text is #FFFFFF at 11.06:1 contrast (WCAG AA passes).

Color values

HEX	#103F5F
RGB	rgb(16, 63, 95)
HSL	hsl(204, 71%, 22%)
HSV	hsv(204, 83%, 37%)
CMYK	cmyk(83.2%, 33.7%, 0%, 62.7%)
CIE-LAB	lab(25.23, -3.00, -23.39)
CIE-LCH	lch(25.23, 23.58, 262.69°)
OKLab	oklab(35.37% -0.0334 -0.0663)
OKLCH	oklch(35.37% 0.074 243.2)
XYZ	xyz(4.0559, 4.4909, 11.4773)
Luminance	0.0449 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#103F5F #5F3010

analogous

#105F58 #103F5F #10185F

triadic

#103F5F #5F103F #3F5F10

tetradic

#103F5F #58105F #5F3010 #185F10

square

#103F5F #58105F #5F3010 #185F10

split-complementary

#103F5F #5F1018 #5F5810

monochromatic

#04111A #071C2B #103F5F #196293 #2284C8

Accessibility & contrast

On white

11.06

#103F5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#103F5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #103F5F

11.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##103F5F	#FFFFFF	#000000	##FFFFFF
##103F5F	1.00	11.06	1.90	11.06
#FFFFFF	11.06	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#304060

Deuteranopia (green-blind)

#25395E

Tritanopia (blue-blind)

#00474A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #103f5f;
/* rgb */ color: rgb(16, 63, 95);
/* oklch */ color: oklch(35.4% 0.074 243.2);

Tailwind

colors: {
  custom: {
    50: '#5c738c',
    500: '#103f5f',
    950: '#000000',
  },
}

SCSS

$custom: #103f5f;
$custom-light: #5c738c;
$custom-dark: #000000;

JSON

{
  "hex": "#103f5f",
  "rgb": {
    "r": 16,
    "g": 63,
    "b": 95
  },
  "hsl": {
    "h": 204.304,
    "s": 71.171,
    "l": 21.765
  },
  "oklch": {
    "l": 0.35369,
    "c": 0.07429,
    "h": 243.2
  },
  "luminance": 0.04491
}

Semantic roles & 50–950 ramp

primary

#103F5F

secondary

#985C33

accent

#833AEE

background

#F5F7F8

surface

#E9EDF0

border

#C5C8CB

text

#05080C

muted

#797B7D

Preview Lab

Preview with #103F5F

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

Preview Lab → · Contrast checker → · Palette generator →