#0F3B57#0F3B57

#0F3B57 is a dark, moderate cyan. Relative luminance 0.039; OKLCH L 33.8% C 0.068 H 241.3°. Best body text is #FFFFFF at 11.77:1 contrast (WCAG AA passes).

Color values

HEX	#0F3B57
RGB	rgb(15, 59, 87)
HSL	hsl(203, 71%, 20%)
HSV	hsv(203, 83%, 34%)
CMYK	cmyk(82.8%, 32.2%, 0%, 65.9%)
CIE-LAB	lab(23.40, -3.77, -21.05)
CIE-LCH	lch(23.40, 21.39, 259.85°)
OKLab	oklab(33.76% -0.0326 -0.0596)
OKLCH	oklch(33.76% 0.068 241.3)
XYZ	xyz(3.4806, 3.9172, 9.5876)
Luminance	0.0392 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0F3B57 #572B0F

analogous

#0F574F #0F3B57 #0F1757

triadic

#0F3B57 #570F3B #3B570F

tetradic

#0F3B57 #4F0F57 #572B0F #17570F

square

#0F3B57 #4F0F57 #572B0F #17570F

split-complementary

#0F3B57 #570F17 #574F0F

monochromatic

#05121A #061823 #0F3B57 #185E8B #2182BF

Accessibility & contrast

On white

11.77

#0F3B57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#0F3B57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0F3B57

11.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0F3B57	#FFFFFF	#000000	##FFFFFF
##0F3B57	1.00	11.77	1.78	11.77
#FFFFFF	11.77	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3B58

Deuteranopia (green-blind)

#243556

Tritanopia (blue-blind)

#004245

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #0f3b57;
/* rgb */ color: rgb(15, 59, 87);
/* oklch */ color: oklch(33.8% 0.068 241.3);

Tailwind

colors: {
  custom: {
    50: '#5a7086',
    500: '#0f3b57',
    950: '#000000',
  },
}

SCSS

$custom: #0f3b57;
$custom-light: #5a7086;
$custom-dark: #000000;

JSON

{
  "hex": "#0f3b57",
  "rgb": {
    "r": 15,
    "g": 59,
    "b": 87
  },
  "hsl": {
    "h": 203.333,
    "s": 70.588,
    "l": 20
  },
  "oklch": {
    "l": 0.33763,
    "c": 0.06792,
    "h": 241.3
  },
  "luminance": 0.03918
}

Semantic roles & 50–950 ramp

primary

#0F3B57

secondary

#915631

accent

#803AED

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #0F3B57

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

Preview Lab → · Contrast checker → · Palette generator →