#1F4E73#1F4E73

#1F4E73 is a dark, moderate cyan. Relative luminance 0.070; OKLCH L 41.0% C 0.080 H 245.4°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#1F4E73
RGB	rgb(31, 78, 115)
HSL	hsl(206, 58%, 29%)
HSV	hsv(206, 73%, 45%)
CMYK	cmyk(73%, 32.2%, 0%, 54.9%)
CIE-LAB	lab(31.75, -2.61, -25.83)
CIE-LCH	lch(31.75, 25.97, 264.24°)
OKLab	oklab(41.01% -0.0334 -0.0731)
OKLCH	oklch(41.01% 0.08 245.4)
XYZ	xyz(6.3828, 6.9772, 17.2267)
Luminance	0.0698 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4E73 #73441F

analogous

#1F736E #1F4E73 #1F2473

triadic

#1F4E73 #731F4E #4E731F

tetradic

#1F4E73 #6E1F73 #73441F #24731F

square

#1F4E73 #6E1F73 #73441F #24731F

split-complementary

#1F4E73 #731F24 #736E1F

monochromatic

#061018 #122D43 #1F4E73 #2C6FA3 #418ECC

Accessibility & contrast

On white

8.77

#1F4E73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#1F4E73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4E73

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4E73	#FFFFFF	#000000	##FFFFFF
##1F4E73	1.00	8.77	2.40	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D4F75

Deuteranopia (green-blind)

#324772

Tritanopia (blue-blind)

#00575B

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1f4e73;
/* rgb */ color: rgb(31, 78, 115);
/* oklch */ color: oklch(41.0% 0.080 245.4);

Tailwind

colors: {
  custom: {
    50: '#667f9b',
    500: '#1f4e73',
    950: '#000000',
  },
}

SCSS

$custom: #1f4e73;
$custom-light: #667f9b;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4e73",
  "rgb": {
    "r": 31,
    "g": 78,
    "b": 115
  },
  "hsl": {
    "h": 206.429,
    "s": 57.534,
    "l": 28.627
  },
  "oklch": {
    "l": 0.41007,
    "c": 0.08037,
    "h": 245.4
  },
  "luminance": 0.06978
}

Semantic roles & 50–950 ramp

primary

#1F4E73

secondary

#A77147

accent

#8B47E1

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1F4E73

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

Preview Lab → · Contrast checker → · Palette generator →