#1F4F83#1F4F83

#1F4F83 is a dark, moderate cyan. Relative luminance 0.075; OKLCH L 42.2% C 0.101 H 252.9°. Best body text is #FFFFFF at 8.39:1 contrast (WCAG AA passes).

Color values

HEX	#1F4F83
RGB	rgb(31, 79, 131)
HSL	hsl(211, 62%, 32%)
HSV	hsv(211, 76%, 51%)
CMYK	cmyk(76.3%, 39.7%, 0%, 48.6%)
CIE-LAB	lab(32.96, 2.99, -33.87)
CIE-LCH	lch(32.96, 34.00, 275.04°)
OKLab	oklab(42.25% -0.0297 -0.0965)
OKLCH	oklch(42.25% 0.101 252.9)
XYZ	xyz(7.4563, 7.5211, 22.5271)
Luminance	0.0752 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4F83 #83531F

analogous

#1F8183 #1F4F83 #211F83

triadic

#1F4F83 #831F4F #4F831F

tetradic

#1F4F83 #831F81 #83531F #1F8321

square

#1F4F83 #831F81 #83531F #1F8321

split-complementary

#1F4F83 #83211F #81831F

monochromatic

#081320 #133152 #1F4F83 #2B6DB4 #498BD4

Accessibility & contrast

On white

8.39

#1F4F83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#1F4F83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4F83

8.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4F83	#FFFFFF	#000000	##FFFFFF
##1F4F83	1.00	8.39	2.50	8.39
#FFFFFF	8.39	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#375385

Deuteranopia (green-blind)

#274982

Tritanopia (blue-blind)

#005B62

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1f4f83;
/* rgb */ color: rgb(31, 79, 131);
/* oklch */ color: oklch(42.2% 0.101 252.9);

Tailwind

colors: {
  custom: {
    50: '#697fa7',
    500: '#1f4f83',
    950: '#000000',
  },
}

SCSS

$custom: #1f4f83;
$custom-light: #697fa7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4f83",
  "rgb": {
    "r": 31,
    "g": 79,
    "b": 131
  },
  "hsl": {
    "h": 211.2,
    "s": 61.728,
    "l": 31.765
  },
  "oklch": {
    "l": 0.42248,
    "c": 0.10102,
    "h": 252.9
  },
  "luminance": 0.07522
}

Semantic roles & 50–950 ramp

primary

#1F4F83

secondary

#B68148

accent

#9743E5

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1F4F83

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

Preview Lab → · Contrast checker → · Palette generator →