#1F369E#1F369E

#1F369E is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.0% C 0.170 H 267.6°. Best body text is #FFFFFF at 10.10:1 contrast (WCAG AA passes).

Color values

HEX	#1F369E
RGB	rgb(31, 54, 158)
HSL	hsl(229, 67%, 37%)
HSV	hsv(229, 80%, 62%)
CMYK	cmyk(80.4%, 65.8%, 0%, 38%)
CIE-LAB	lab(27.84, 30.65, -58.70)
CIE-LCH	lch(27.84, 66.23, 297.57°)
OKLab	oklab(38.99% -0.0072 -0.1699)
OKLCH	oklch(38.99% 0.17 267.6)
XYZ	xyz(8.0536, 5.3973, 32.9585)
Luminance	0.0540 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F369E #9E871F

analogous

#1F769E #1F369E #481F9E

triadic

#1F369E #9E1F36 #369E1F

tetradic

#1F369E #9E1F76 #9E871F #1F9E48

square

#1F369E #9E1F76 #9E871F #1F9E48

split-complementary

#1F369E #9E481F #769E1F

monochromatic

#0B1338 #15256B #1F369E #2947D1 #5971DE

Accessibility & contrast

On white

10.10

#1F369E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#1F369E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F369E

10.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F369E	#FFFFFF	#000000	##FFFFFF
##1F369E	1.00	10.10	2.08	10.10
#FFFFFF	10.10	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048A1

Deuteranopia (green-blind)

#003C9C

Tritanopia (blue-blind)

#005265

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1f369e;
/* rgb */ color: rgb(31, 54, 158);
/* oklch */ color: oklch(39.0% 0.170 267.6);

Tailwind

colors: {
  custom: {
    50: '#716dbc',
    500: '#1f369e',
    950: '#000000',
  },
}

SCSS

$custom: #1f369e;
$custom-light: #716dbc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f369e",
  "rgb": {
    "r": 31,
    "g": 54,
    "b": 158
  },
  "hsl": {
    "h": 229.134,
    "s": 67.196,
    "l": 37.059
  },
  "oklch": {
    "l": 0.38992,
    "c": 0.17008,
    "h": 267.6
  },
  "luminance": 0.05398
}

Semantic roles & 50–950 ramp

primary

#1F369E

secondary

#C2AF56

accent

#CB3EEA

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1F369E

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

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