#1F618F#1F618F

#1F618F is a mid, moderate cyan. Relative luminance 0.108; OKLCH L 47.4% C 0.099 H 243.6°. Best body text is #FFFFFF at 6.64:1 contrast (WCAG AA passes).

Color values

HEX	#1F618F
RGB	rgb(31, 97, 143)
HSL	hsl(205, 64%, 34%)
HSV	hsv(205, 78%, 56%)
CMYK	cmyk(78.3%, 32.2%, 0%, 43.9%)
CIE-LAB	lab(39.28, -3.85, -31.19)
CIE-LCH	lch(39.28, 31.43, 262.96°)
OKLab	oklab(47.43% -0.044 -0.0884)
OKLCH	oklch(47.43% 0.099 243.6)
XYZ	xyz(9.7958, 10.8227, 27.5540)
Luminance	0.1082 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F618F #8F4D1F

analogous

#1F8F85 #1F618F #1F298F

triadic

#1F618F #8F1F61 #618F1F

tetradic

#1F618F #851F8F #8F4D1F #298F1F

square

#1F618F #851F8F #8F4D1F #298F1F

split-complementary

#1F618F #8F1F29 #8F851F

monochromatic

#091D2A #143F5D #1F618F #2A83C1 #4FA0D9

Accessibility & contrast

On white

6.64

#1F618F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#1F618F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F618F

6.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F618F	#FFFFFF	#000000	##FFFFFF
##1F618F	1.00	6.64	3.16	6.64
#FFFFFF	6.64	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C6291

Deuteranopia (green-blind)

#3C588E

Tritanopia (blue-blind)

#006C71

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #1f618f;
/* rgb */ color: rgb(31, 97, 143);
/* oklch */ color: oklch(47.4% 0.099 243.6);

Tailwind

colors: {
  custom: {
    50: '#6c8db0',
    500: '#1f618f',
    950: '#000000',
  },
}

SCSS

$custom: #1f618f;
$custom-light: #6c8db0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f618f",
  "rgb": {
    "r": 31,
    "g": 97,
    "b": 143
  },
  "hsl": {
    "h": 204.643,
    "s": 64.368,
    "l": 34.118
  },
  "oklch": {
    "l": 0.47427,
    "c": 0.09877,
    "h": 243.6
  },
  "luminance": 0.10824
}

Semantic roles & 50–950 ramp

primary

#1F618F

secondary

#BC7B4E

accent

#8540E7

background

#F7F8FA

surface

#EDF0F4

border

#C8CBCE

text

#080C10

muted

#7B7D7F

Preview Lab

Preview with #1F618F

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

Preview Lab → · Contrast checker → · Palette generator →