#1F5DB3#1F5DB3

#1F5DB3 is a mid, vivid cyan. Relative luminance 0.114; OKLCH L 48.8% C 0.150 H 257.8°. Best body text is #FFFFFF at 6.41:1 contrast (WCAG AA passes).

Color values

HEX	#1F5DB3
RGB	rgb(31, 93, 179)
HSL	hsl(215, 70%, 41%)
HSV	hsv(215, 83%, 70%)
CMYK	cmyk(82.7%, 48%, 0%, 29.8%)
CIE-LAB	lab(40.20, 12.78, -51.15)
CIE-LCH	lch(40.20, 52.73, 284.03°)
OKLab	oklab(48.84% -0.0317 -0.1471)
OKLCH	oklch(48.84% 0.15 257.8)
XYZ	xyz(12.6131, 11.3731, 44.1695)
Luminance	0.1138 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F5DB3 #B3751F

analogous

#1FA7B3 #1F5DB3 #2B1FB3

triadic

#1F5DB3 #B31F5D #5DB31F

tetradic

#1F5DB3 #B31FA7 #B3751F #1FB32B

square

#1F5DB3 #B31FA7 #B3751F #1FB32B

split-complementary

#1F5DB3 #B32B1F #A7B31F

monochromatic

#0D274B #16427F #1F5DB3 #337ADC #689CE5

Accessibility & contrast

On white

6.41

#1F5DB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#1F5DB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F5DB3

6.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F5DB3	#FFFFFF	#000000	##FFFFFF
##1F5DB3	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)

#2C66B6

Deuteranopia (green-blind)

#0059B1

Tritanopia (blue-blind)

#00727F

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #1f5db3;
/* rgb */ color: rgb(31, 93, 179);
/* oklch */ color: oklch(48.8% 0.150 257.8);

Tailwind

colors: {
  custom: {
    50: '#748aca',
    500: '#1f5db3',
    950: '#000000',
  },
}

SCSS

$custom: #1f5db3;
$custom-light: #748aca;
$custom-dark: #000000;

JSON

{
  "hex": "#1f5db3",
  "rgb": {
    "r": 31,
    "g": 93,
    "b": 179
  },
  "hsl": {
    "h": 214.865,
    "s": 70.476,
    "l": 41.176
  },
  "oklch": {
    "l": 0.48836,
    "c": 0.15047,
    "h": 257.8
  },
  "luminance": 0.11375
}

Semantic roles & 50–950 ramp

primary

#1F5DB3

secondary

#CA9F64

accent

#A23BED

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #1F5DB3

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

Preview Lab → · Contrast checker → · Palette generator →