#1F65B1#1F65B1

#1F65B1 is a mid, vivid cyan. Relative luminance 0.128; OKLCH L 50.5% C 0.138 H 253.9°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#1F65B1
RGB	rgb(31, 101, 177)
HSL	hsl(211, 70%, 41%)
HSV	hsv(211, 82%, 69%)
CMYK	cmyk(82.5%, 42.9%, 0%, 30.6%)
CIE-LAB	lab(42.42, 6.82, -46.42)
CIE-LCH	lch(42.42, 46.92, 278.35°)
OKLab	oklab(50.51% -0.0385 -0.133)
OKLCH	oklch(50.51% 0.138 253.9)
XYZ	xyz(13.1516, 12.7714, 43.3584)
Luminance	0.1277 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F65B1 #B16B1F

analogous

#1FAEB1 #1F65B1 #221FB1

triadic

#1F65B1 #B11F65 #65B11F

tetradic

#1F65B1 #B11FAE #B16B1F #1FB122

square

#1F65B1 #B11FAE #B16B1F #1FB122

split-complementary

#1F65B1 #B1221F #AEB11F

monochromatic

#0D2A49 #16477D #1F65B1 #3283DB #66A3E4

Accessibility & contrast

On white

5.91

#1F65B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#1F65B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F65B1

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F65B1	#FFFFFF	#000000	##FFFFFF
##1F65B1	1.00	5.91	3.55	5.91
#FFFFFF	5.91	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F6BB4

Deuteranopia (green-blind)

#235EAF

Tritanopia (blue-blind)

#007782

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #1f65b1;
/* rgb */ color: rgb(31, 101, 177);
/* oklch */ color: oklch(50.5% 0.138 253.9);

Tailwind

colors: {
  custom: {
    50: '#7390c9',
    500: '#1f65b1',
    950: '#000000',
  },
}

SCSS

$custom: #1f65b1;
$custom-light: #7390c9;
$custom-dark: #000000;

JSON

{
  "hex": "#1f65b1",
  "rgb": {
    "r": 31,
    "g": 101,
    "b": 177
  },
  "hsl": {
    "h": 211.233,
    "s": 70.192,
    "l": 40.784
  },
  "oklch": {
    "l": 0.50509,
    "c": 0.13845,
    "h": 253.9
  },
  "luminance": 0.12773
}

Semantic roles & 50–950 ramp

primary

#1F65B1

secondary

#CA9862

accent

#983BED

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #1F65B1

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

Preview Lab → · Contrast checker → · Palette generator →