#1F5FB3#1F5FB3

#1F5FB3 is a mid, vivid cyan. Relative luminance 0.117; OKLCH L 49.3% C 0.148 H 257.0°. Best body text is #FFFFFF at 6.28:1 contrast (WCAG AA passes).

Color values

HEX	#1F5FB3
RGB	rgb(31, 95, 179)
HSL	hsl(214, 70%, 41%)
HSV	hsv(214, 83%, 70%)
CMYK	cmyk(82.7%, 46.9%, 0%, 29.8%)
CIE-LAB	lab(40.78, 11.48, -50.22)
CIE-LCH	lch(40.78, 51.51, 282.87°)
OKLab	oklab(49.28% -0.0333 -0.1443)
OKLCH	oklch(49.28% 0.148 257)
XYZ	xyz(12.7910, 11.7288, 44.2288)
Luminance	0.1173 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F5FB3 #B3731F

analogous

#1FA9B3 #1F5FB3 #291FB3

triadic

#1F5FB3 #B31F5F #5FB31F

tetradic

#1F5FB3 #B31FA9 #B3731F #1FB329

square

#1F5FB3 #B31FA9 #B3731F #1FB329

split-complementary

#1F5FB3 #B3291F #A9B31F

monochromatic

#0D284B #16437F #1F5FB3 #337CDC #689EE5

Accessibility & contrast

On white

6.28

#1F5FB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#1F5FB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F5FB3

6.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F5FB3	#FFFFFF	#000000	##FFFFFF
##1F5FB3	1.00	6.28	3.35	6.28
#FFFFFF	6.28	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3167B6

Deuteranopia (green-blind)

#025AB1

Tritanopia (blue-blind)

#007380

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #1f5fb3;
/* rgb */ color: rgb(31, 95, 179);
/* oklch */ color: oklch(49.3% 0.148 257.0);

Tailwind

colors: {
  custom: {
    50: '#748bca',
    500: '#1f5fb3',
    950: '#000000',
  },
}

SCSS

$custom: #1f5fb3;
$custom-light: #748bca;
$custom-dark: #000000;

JSON

{
  "hex": "#1f5fb3",
  "rgb": {
    "r": 31,
    "g": 95,
    "b": 179
  },
  "hsl": {
    "h": 214.054,
    "s": 70.476,
    "l": 41.176
  },
  "oklch": {
    "l": 0.49283,
    "c": 0.14808,
    "h": 257
  },
  "luminance": 0.1173
}

Semantic roles & 50–950 ramp

primary

#1F5FB3

secondary

#CA9E64

accent

#A03BED

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #1F5FB3

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

Preview Lab → · Contrast checker → · Palette generator →