#1F56B3#1F56B3

#1F56B3 is a mid, vivid blue. Relative luminance 0.102; OKLCH L 47.3% C 0.159 H 260.4°. Best body text is #FFFFFF at 6.91:1 contrast (WCAG AA passes).

Color values

HEX	#1F56B3
RGB	rgb(31, 86, 179)
HSL	hsl(218, 70%, 41%)
HSV	hsv(218, 83%, 70%)
CMYK	cmyk(82.7%, 52%, 0%, 29.8%)
CIE-LAB	lab(38.20, 17.40, -54.39)
CIE-LCH	lch(38.20, 57.10, 287.74°)
OKLab	oklab(47.3% -0.0266 -0.1567)
OKLCH	oklch(47.3% 0.159 260.4)
XYZ	xyz(12.0266, 10.2001, 43.9740)
Luminance	0.1020 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F56B3 #B37C1F

analogous

#1FA0B3 #1F56B3 #321FB3

triadic

#1F56B3 #B31F56 #56B31F

tetradic

#1F56B3 #B31FA0 #B37C1F #1FB332

square

#1F56B3 #B31FA0 #B37C1F #1FB332

split-complementary

#1F56B3 #B3321F #A0B31F

monochromatic

#0D244B #163D7F #1F56B3 #3372DC #6896E5

Accessibility & contrast

On white

6.91

#1F56B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#1F56B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F56B3

6.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F56B3	#FFFFFF	#000000	##FFFFFF
##1F56B3	1.00	6.91	3.04	6.91
#FFFFFF	6.91	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1561B6

Deuteranopia (green-blind)

#0054B1

Tritanopia (blue-blind)

#006D7C

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #1f56b3;
/* rgb */ color: rgb(31, 86, 179);
/* oklch */ color: oklch(47.3% 0.159 260.4);

Tailwind

colors: {
  custom: {
    50: '#7484ca',
    500: '#1f56b3',
    950: '#000000',
  },
}

SCSS

$custom: #1f56b3;
$custom-light: #7484ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1f56b3",
  "rgb": {
    "r": 31,
    "g": 86,
    "b": 179
  },
  "hsl": {
    "h": 217.703,
    "s": 70.476,
    "l": 41.176
  },
  "oklch": {
    "l": 0.473,
    "c": 0.15899,
    "h": 260.4
  },
  "luminance": 0.10202
}

Semantic roles & 50–950 ramp

primary

#1F56B3

secondary

#CAA464

accent

#AB3BED

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #1F56B3

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

Preview Lab → · Contrast checker → · Palette generator →