#1F65B3#1F65B3

#1F65B3 is a mid, vivid cyan. Relative luminance 0.129; OKLCH L 50.6% C 0.141 H 254.4°. Best body text is #FFFFFF at 5.88:1 contrast (WCAG AA passes).

Color values

HEX	#1F65B3
RGB	rgb(31, 101, 179)
HSL	hsl(212, 70%, 41%)
HSV	hsv(212, 83%, 70%)
CMYK	cmyk(82.7%, 43.6%, 0%, 29.8%)
CIE-LAB	lab(42.54, 7.60, -47.40)
CIE-LCH	lch(42.54, 48.00, 279.11°)
OKLab	oklab(50.64% -0.038 -0.1359)
OKLCH	oklch(50.64% 0.141 254.4)
XYZ	xyz(13.3524, 12.8517, 44.4160)
Luminance	0.1285 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F65B3 #B36D1F

analogous

#1FAFB3 #1F65B3 #231FB3

triadic

#1F65B3 #B31F65 #65B31F

tetradic

#1F65B3 #B31FAF #B36D1F #1FB323

square

#1F65B3 #B31FAF #B36D1F #1FB323

split-complementary

#1F65B3 #B3231F #AFB31F

monochromatic

#0D2A4B #16487F #1F65B3 #3383DC #68A3E5

Accessibility & contrast

On white

5.88

#1F65B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#1F65B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F65B3

5.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F65B3	#FFFFFF	#000000	##FFFFFF
##1F65B3	1.00	5.88	3.57	5.88
#FFFFFF	5.88	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D6CB6

Deuteranopia (green-blind)

#205EB1

Tritanopia (blue-blind)

#007883

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #1f65b3;
/* rgb */ color: rgb(31, 101, 179);
/* oklch */ color: oklch(50.6% 0.141 254.4);

Tailwind

colors: {
  custom: {
    50: '#7490ca',
    500: '#1f65b3',
    950: '#000000',
  },
}

SCSS

$custom: #1f65b3;
$custom-light: #7490ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1f65b3",
  "rgb": {
    "r": 31,
    "g": 101,
    "b": 179
  },
  "hsl": {
    "h": 211.622,
    "s": 70.476,
    "l": 41.176
  },
  "oklch": {
    "l": 0.50644,
    "c": 0.14109,
    "h": 254.4
  },
  "luminance": 0.12853
}

Semantic roles & 50–950 ramp

primary

#1F65B3

secondary

#CA9A64

accent

#993BED

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #1F65B3

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

Preview Lab → · Contrast checker → · Palette generator →