#1F549F#1F549F

#1F549F is a mid, vivid blue. Relative luminance 0.091; OKLCH L 45.4% C 0.134 H 257.9°. Best body text is #FFFFFF at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#1F549F
RGB	rgb(31, 84, 159)
HSL	hsl(215, 67%, 37%)
HSV	hsv(215, 81%, 62%)
CMYK	cmyk(80.5%, 47.2%, 0%, 37.6%)
CIE-LAB	lab(36.24, 10.80, -45.66)
CIE-LCH	lch(36.24, 46.92, 283.30°)
OKLab	oklab(45.36% -0.0281 -0.1311)
OKLCH	oklch(45.36% 0.134 257.9)
XYZ	xyz(9.9911, 9.1340, 34.0306)
Luminance	0.0914 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F549F #9F6A1F

analogous

#1F949F #1F549F #2A1F9F

triadic

#1F549F #9F1F54 #549F1F

tetradic

#1F549F #9F1F94 #9F6A1F #1F9F2A

square

#1F549F #9F1F94 #9F6A1F #1F9F2A

split-complementary

#1F549F #9F2A1F #949F1F

monochromatic

#0B1E39 #15396C #1F549F #296FD2 #5A91DF

Accessibility & contrast

On white

7.43

#1F549F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#1F549F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F549F

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F549F	#FFFFFF	#000000	##FFFFFF
##1F549F	1.00	7.43	2.83	7.43
#FFFFFF	7.43	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B5BA2

Deuteranopia (green-blind)

#08509E

Tritanopia (blue-blind)

#006672

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1f549f;
/* rgb */ color: rgb(31, 84, 159);
/* oklch */ color: oklch(45.4% 0.134 257.9);

Tailwind

colors: {
  custom: {
    50: '#7083bc',
    500: '#1f549f',
    950: '#000000',
  },
}

SCSS

$custom: #1f549f;
$custom-light: #7083bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f549f",
  "rgb": {
    "r": 31,
    "g": 84,
    "b": 159
  },
  "hsl": {
    "h": 215.156,
    "s": 67.368,
    "l": 37.255
  },
  "oklch": {
    "l": 0.45357,
    "c": 0.13407,
    "h": 257.9
  },
  "luminance": 0.09135
}

Semantic roles & 50–950 ramp

primary

#1F549F

secondary

#C39657

accent

#A33EEA

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1F549F

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

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