#1F366E#1F366E

#1F366E is a dark, moderate blue. Relative luminance 0.041; OKLCH L 34.8% C 0.101 H 264.8°. Best body text is #FFFFFF at 11.60:1 contrast (WCAG AA passes).

Color values

HEX	#1F366E
RGB	rgb(31, 54, 110)
HSL	hsl(223, 56%, 28%)
HSV	hsv(223, 72%, 43%)
CMYK	cmyk(71.8%, 50.9%, 0%, 56.9%)
CIE-LAB	lab(23.85, 11.71, -35.23)
CIE-LCH	lch(23.85, 37.13, 288.39°)
OKLab	oklab(34.76% -0.0091 -0.101)
OKLCH	oklch(34.76% 0.101 264.8)
XYZ	xyz(4.6977, 4.0550, 15.2839)
Luminance	0.0406 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F366E #6E571F

analogous

#1F5D6E #1F366E #301F6E

triadic

#1F366E #6E1F36 #366E1F

tetradic

#1F366E #6E1F5D #6E571F #1F6E30

square

#1F366E #6E1F5D #6E571F #1F6E30

split-complementary

#1F366E #6E301F #5D6E1F

monochromatic

#070C18 #121F3E #1F366E #2C4D9E #3F67C9

Accessibility & contrast

On white

11.60

#1F366E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1F366E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F366E

11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F366E	#FFFFFF	#000000	##FFFFFF
##1F366E	1.00	11.60	1.81	11.60
#FFFFFF	11.60	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#183D70

Deuteranopia (green-blind)

#04356D

Tritanopia (blue-blind)

#00434C

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1f366e;
/* rgb */ color: rgb(31, 54, 110);
/* oklch */ color: oklch(34.8% 0.101 264.8);

Tailwind

colors: {
  custom: {
    50: '#656c98',
    500: '#1f366e',
    950: '#000000',
  },
}

SCSS

$custom: #1f366e;
$custom-light: #656c98;
$custom-dark: #000000;

JSON

{
  "hex": "#1f366e",
  "rgb": {
    "r": 31,
    "g": 54,
    "b": 110
  },
  "hsl": {
    "h": 222.532,
    "s": 56.028,
    "l": 27.647
  },
  "oklch": {
    "l": 0.34764,
    "c": 0.10141,
    "h": 264.8
  },
  "luminance": 0.04055
}

Semantic roles & 50–950 ramp

primary

#1F366E

secondary

#A28747

accent

#B348DF

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1F366E

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

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