#1F369C#1F369C

#1F369C is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.8% C 0.167 H 267.6°. Best body text is #FFFFFF at 10.16:1 contrast (WCAG AA passes).

Color values

HEX	#1F369C
RGB	rgb(31, 54, 156)
HSL	hsl(229, 67%, 37%)
HSV	hsv(229, 80%, 61%)
CMYK	cmyk(80.1%, 65.4%, 0%, 38.8%)
CIE-LAB	lab(27.65, 29.89, -57.79)
CIE-LCH	lch(27.65, 65.06, 297.35°)
OKLab	oklab(38.8% -0.0071 -0.1673)
OKLCH	oklch(38.8% 0.167 267.6)
XYZ	xyz(7.8829, 5.3290, 32.0592)
Luminance	0.0533 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F369C #9C851F

analogous

#1F759C #1F369C #471F9C

triadic

#1F369C #9C1F36 #369C1F

tetradic

#1F369C #9C1F75 #9C851F #1F9C47

square

#1F369C #9C1F75 #9C851F #1F9C47

split-complementary

#1F369C #9C471F #759C1F

monochromatic

#0B1336 #152469 #1F369C #2948CF #5870DE

Accessibility & contrast

On white

10.16

#1F369C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#1F369C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F369C

10.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F369C	#FFFFFF	#000000	##FFFFFF
##1F369C	1.00	10.16	2.07	10.16
#FFFFFF	10.16	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00479F

Deuteranopia (green-blind)

#003B9A

Tritanopia (blue-blind)

#005164

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1f369c;
/* rgb */ color: rgb(31, 54, 156);
/* oklch */ color: oklch(38.8% 0.167 267.6);

Tailwind

colors: {
  custom: {
    50: '#716dba',
    500: '#1f369c',
    950: '#000000',
  },
}

SCSS

$custom: #1f369c;
$custom-light: #716dba;
$custom-dark: #000000;

JSON

{
  "hex": "#1f369c",
  "rgb": {
    "r": 31,
    "g": 54,
    "b": 156
  },
  "hsl": {
    "h": 228.96,
    "s": 66.845,
    "l": 36.667
  },
  "oklch": {
    "l": 0.38798,
    "c": 0.16741,
    "h": 267.6
  },
  "luminance": 0.0533
}

Semantic roles & 50–950 ramp

primary

#1F369C

secondary

#C1AE55

accent

#CA3EEA

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1F369C

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

Preview Lab → · Contrast checker → · Palette generator →