#1F4E70#1F4E70

#1F4E70 is a dark, moderate cyan. Relative luminance 0.069; OKLCH L 40.8% C 0.077 H 243.3°. Best body text is #FFFFFF at 8.82:1 contrast (WCAG AA passes).

Color values

HEX	#1F4E70
RGB	rgb(31, 78, 112)
HSL	hsl(205, 57%, 28%)
HSV	hsv(205, 72%, 44%)
CMYK	cmyk(72.3%, 30.4%, 0%, 56.1%)
CIE-LAB	lab(31.60, -3.76, -24.20)
CIE-LCH	lch(31.60, 24.49, 261.18°)
OKLab	oklab(40.83% -0.0344 -0.0683)
OKLCH	oklch(40.83% 0.077 243.3)
XYZ	xyz(6.2130, 6.9093, 16.3323)
Luminance	0.0691 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4E70 #70411F

analogous

#1F7069 #1F4E70 #1F2670

triadic

#1F4E70 #701F4E #4E701F

tetradic

#1F4E70 #691F70 #70411F #26701F

square

#1F4E70 #691F70 #70411F #26701F

split-complementary

#1F4E70 #701F26 #70691F

monochromatic

#071118 #122D40 #1F4E70 #2C6FA0 #3F90CA

Accessibility & contrast

On white

8.82

#1F4E70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#1F4E70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4E70

8.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4E70	#FFFFFF	#000000	##FFFFFF
##1F4E70	1.00	8.82	2.38	8.82
#FFFFFF	8.82	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F4F72

Deuteranopia (green-blind)

#33476F

Tritanopia (blue-blind)

#00565A

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1f4e70;
/* rgb */ color: rgb(31, 78, 112);
/* oklch */ color: oklch(40.8% 0.077 243.3);

Tailwind

colors: {
  custom: {
    50: '#657f99',
    500: '#1f4e70',
    950: '#000000',
  },
}

SCSS

$custom: #1f4e70;
$custom-light: #657f99;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4e70",
  "rgb": {
    "r": 31,
    "g": 78,
    "b": 112
  },
  "hsl": {
    "h": 205.185,
    "s": 56.643,
    "l": 28.039
  },
  "oklch": {
    "l": 0.40833,
    "c": 0.07652,
    "h": 243.3
  },
  "luminance": 0.0691
}

Semantic roles & 50–950 ramp

primary

#1F4E70

secondary

#A46E47

accent

#8848E0

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0E

muted

#7A7C7E

Preview Lab

Preview with #1F4E70

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

Preview Lab → · Contrast checker → · Palette generator →