#1F648F#1F648F

#1F648F is a mid, moderate cyan. Relative luminance 0.114; OKLCH L 48.2% C 0.096 H 240.8°. Best body text is #FFFFFF at 6.41:1 contrast (WCAG AA passes).

Color values

HEX	#1F648F
RGB	rgb(31, 100, 143)
HSL	hsl(203, 64%, 34%)
HSV	hsv(203, 78%, 56%)
CMYK	cmyk(78.3%, 30.1%, 0%, 43.9%)
CIE-LAB	lab(40.23, -5.70, -29.71)
CIE-LCH	lch(40.23, 30.25, 259.15°)
OKLab	oklab(48.18% -0.0469 -0.0841)
OKLCH	oklch(48.18% 0.096 240.8)
XYZ	xyz(10.0782, 11.3876, 27.6481)
Luminance	0.1139 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F648F #8F4A1F

analogous

#1F8F82 #1F648F #1F2C8F

triadic

#1F648F #8F1F64 #648F1F

tetradic

#1F648F #821F8F #8F4A1F #2C8F1F

square

#1F648F #821F8F #8F4A1F #2C8F1F

split-complementary

#1F648F #8F1F2C #8F821F

monochromatic

#091E2A #14415D #1F648F #2A87C1 #4FA4D9

Accessibility & contrast

On white

6.41

#1F648F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#1F648F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F648F

6.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F648F	#FFFFFF	#000000	##FFFFFF
##1F648F	1.00	6.41	3.28	6.41
#FFFFFF	6.41	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#506591

Deuteranopia (green-blind)

#415A8E

Tritanopia (blue-blind)

#006F73

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #1f648f;
/* rgb */ color: rgb(31, 100, 143);
/* oklch */ color: oklch(48.2% 0.096 240.8);

Tailwind

colors: {
  custom: {
    50: '#6c90b0',
    500: '#1f648f',
    950: '#000000',
  },
}

SCSS

$custom: #1f648f;
$custom-light: #6c90b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f648f",
  "rgb": {
    "r": 31,
    "g": 100,
    "b": 143
  },
  "hsl": {
    "h": 203.036,
    "s": 64.368,
    "l": 34.118
  },
  "oklch": {
    "l": 0.48175,
    "c": 0.09629,
    "h": 240.8
  },
  "luminance": 0.11389
}

Semantic roles & 50–950 ramp

primary

#1F648F

secondary

#BC784E

accent

#8140E7

background

#F7F8FA

surface

#EDF0F4

border

#C8CBCE

text

#080C10

muted

#7B7D7F

Preview Lab

Preview with #1F648F

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

Preview Lab → · Contrast checker → · Palette generator →