#1F4963#1F4963

#1F4963 is a dark, moderate cyan. Relative luminance 0.060; OKLCH L 38.8% C 0.064 H 238.7°. Best body text is #FFFFFF at 9.58:1 contrast (WCAG AA passes).

Color values

HEX	#1F4963
RGB	rgb(31, 73, 99)
HSL	hsl(203, 52%, 25%)
HSV	hsv(203, 69%, 39%)
CMYK	cmyk(68.7%, 26.3%, 0%, 61.2%)
CIE-LAB	lab(29.30, -5.47, -19.55)
CIE-LCH	lch(29.30, 20.30, 254.36°)
OKLab	oklab(38.8% -0.0334 -0.0549)
OKLCH	oklch(38.8% 0.064 238.7)
XYZ	xyz(5.1989, 5.9567, 12.6777)
Luminance	0.0596 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4963 #63391F

analogous

#1F635B #1F4963 #1F2763

triadic

#1F4963 #631F49 #49631F

tetradic

#1F4963 #5B1F63 #63391F #27631F

square

#1F4963 #5B1F63 #63391F #27631F

split-complementary

#1F4963 #631F27 #635B1F

monochromatic

#071117 #102734 #1F4963 #2E6B92 #3C8EC0

Accessibility & contrast

On white

9.58

#1F4963 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#1F4963 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4963

9.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4963	#FFFFFF	#000000	##FFFFFF
##1F4963	1.00	9.58	2.19	9.58
#FFFFFF	9.58	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D4964

Deuteranopia (green-blind)

#344263

Tritanopia (blue-blind)

#005052

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1f4963;
/* rgb */ color: rgb(31, 73, 99);
/* oklch */ color: oklch(38.8% 0.064 238.7);

Tailwind

colors: {
  custom: {
    50: '#637b8f',
    500: '#1f4963',
    950: '#000000',
  },
}

SCSS

$custom: #1f4963;
$custom-light: #637b8f;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4963",
  "rgb": {
    "r": 31,
    "g": 73,
    "b": 99
  },
  "hsl": {
    "h": 202.941,
    "s": 52.308,
    "l": 25.49
  },
  "oklch": {
    "l": 0.38802,
    "c": 0.0643,
    "h": 238.7
  },
  "luminance": 0.05957
}

Semantic roles & 50–950 ramp

primary

#1F4963

secondary

#986546

accent

#834CDC

background

#F6F7F8

surface

#EBEDF0

border

#C6C8CB

text

#06090C

muted

#7A7B7D

Preview Lab

Preview with #1F4963

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

Preview Lab → · Contrast checker → · Palette generator →