#10374B#10374B

#10374B is a dark, muted cyan. Relative luminance 0.034; OKLCH L 32.0% C 0.056 H 234.9°. Best body text is #FFFFFF at 12.57:1 contrast (WCAG AA passes).

Color values

HEX	#10374B
RGB	rgb(16, 55, 75)
HSL	hsl(200, 65%, 18%)
HSV	hsv(200, 79%, 29%)
CMYK	cmyk(78.7%, 26.7%, 0%, 70.6%)
CIE-LAB	lab(21.40, -5.86, -16.22)
CIE-LCH	lch(21.40, 17.25, 250.13°)
OKLab	oklab(31.97% -0.0321 -0.0456)
OKLCH	oklch(31.97% 0.056 234.9)
XYZ	xyz(2.8494, 3.3502, 7.1517)
Luminance	0.0335 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10374B #4B2410

analogous

#104B41 #10374B #10194B

triadic

#10374B #4B1037 #374B10

tetradic

#10374B #41104B #4B2410 #194B10

square

#10374B #41104B #4B2410 #194B10

split-complementary

#10374B #4B1019 #4B4110

monochromatic

#051219 #051219 #10374B #1B5C7D #2681B0

Accessibility & contrast

On white

12.57

#10374B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#10374B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10374B

12.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10374B	#FFFFFF	#000000	##FFFFFF
##10374B	1.00	12.57	1.67	12.57
#FFFFFF	12.57	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D374C

Deuteranopia (green-blind)

#25314B

Tritanopia (blue-blind)

#003C3E

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #10374b;
/* rgb */ color: rgb(16, 55, 75);
/* oklch */ color: oklch(32.0% 0.056 234.9);

Tailwind

colors: {
  custom: {
    50: '#576d7d',
    500: '#10374b',
    950: '#000000',
  },
}

SCSS

$custom: #10374b;
$custom-light: #576d7d;
$custom-dark: #000000;

JSON

{
  "hex": "#10374b",
  "rgb": {
    "r": 16,
    "g": 55,
    "b": 75
  },
  "hsl": {
    "h": 200.339,
    "s": 64.835,
    "l": 17.843
  },
  "oklch": {
    "l": 0.31974,
    "c": 0.05578,
    "h": 234.9
  },
  "luminance": 0.03351
}

Semantic roles & 50–950 ramp

primary

#10374B

secondary

#854E32

accent

#7940E8

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#040709

muted

#797A7B

Preview Lab

Preview with #10374B

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

Preview Lab → · Contrast checker → · Palette generator →