#1F4E79#1F4E79

#1F4E79 is a dark, moderate cyan. Relative luminance 0.071; OKLCH L 41.4% C 0.088 H 249.1°. Best body text is #FFFFFF at 8.66:1 contrast (WCAG AA passes).

Color values

HEX	#1F4E79
RGB	rgb(31, 78, 121)
HSL	hsl(209, 59%, 30%)
HSV	hsv(209, 74%, 47%)
CMYK	cmyk(74.4%, 35.5%, 0%, 52.5%)
CIE-LAB	lab(32.08, -0.28, -29.07)
CIE-LCH	lch(32.08, 29.07, 269.44°)
OKLab	oklab(41.37% -0.0315 -0.0825)
OKLCH	oklch(41.37% 0.088 249.1)
XYZ	xyz(6.7394, 7.1198, 19.1045)
Luminance	0.0712 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4E79 #794A1F

analogous

#1F7977 #1F4E79 #1F2179

triadic

#1F4E79 #791F4E #4E791F

tetradic

#1F4E79 #771F79 #794A1F #21791F

square

#1F4E79 #771F79 #794A1F #21791F

split-complementary

#1F4E79 #791F21 #79771F

monochromatic

#061018 #132F48 #1F4E79 #2B6DAA #438CCF

Accessibility & contrast

On white

8.66

#1F4E79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#1F4E79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4E79

8.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4E79	#FFFFFF	#000000	##FFFFFF
##1F4E79	1.00	8.66	2.42	8.66
#FFFFFF	8.66	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B507B

Deuteranopia (green-blind)

#2E4878

Tritanopia (blue-blind)

#00585E

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #1f4e79;
/* rgb */ color: rgb(31, 78, 121);
/* oklch */ color: oklch(41.4% 0.088 249.1);

Tailwind

colors: {
  custom: {
    50: '#677fa0',
    500: '#1f4e79',
    950: '#000000',
  },
}

SCSS

$custom: #1f4e79;
$custom-light: #677fa0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4e79",
  "rgb": {
    "r": 31,
    "g": 78,
    "b": 121
  },
  "hsl": {
    "h": 208.667,
    "s": 59.211,
    "l": 29.804
  },
  "oklch": {
    "l": 0.41368,
    "c": 0.08834,
    "h": 249.1
  },
  "luminance": 0.07121
}

Semantic roles & 50–950 ramp

primary

#1F4E79

secondary

#AC7847

accent

#9045E2

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#070A0E

muted

#7A7C7E

Preview Lab

Preview with #1F4E79

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

Preview Lab → · Contrast checker → · Palette generator →