#1F336E#1F336E

#1F336E is a dark, moderate blue. Relative luminance 0.038; OKLCH L 34.1% C 0.106 H 266.7°. Best body text is #FFFFFF at 11.95:1 contrast (WCAG AA passes).

Color values

HEX	#1F336E
RGB	rgb(31, 51, 110)
HSL	hsl(225, 56%, 28%)
HSV	hsv(225, 72%, 43%)
CMYK	cmyk(71.8%, 53.6%, 0%, 56.9%)
CIE-LAB	lab(22.95, 13.85, -36.69)
CIE-LCH	lch(22.95, 39.22, 290.68°)
OKLab	oklab(34.07% -0.0061 -0.1053)
OKLCH	oklch(34.07% 0.106 266.7)
XYZ	xyz(4.5624, 3.7843, 15.2388)
Luminance	0.0379 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F336E #6E5A1F

analogous

#1F5A6E #1F336E #321F6E

triadic

#1F336E #6E1F33 #336E1F

tetradic

#1F336E #6E1F5A #6E5A1F #1F6E32

square

#1F336E #6E1F5A #6E5A1F #1F6E32

split-complementary

#1F336E #6E321F #5A6E1F

monochromatic

#070B18 #121D3E #1F336E #2C499E #3F62C9

Accessibility & contrast

On white

11.95

#1F336E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#1F336E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F336E

11.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F336E	#FFFFFF	#000000	##FFFFFF
##1F336E	1.00	11.95	1.76	11.95
#FFFFFF	11.95	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#103B70

Deuteranopia (green-blind)

#00336D

Tritanopia (blue-blind)

#00414B

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1f336e;
/* rgb */ color: rgb(31, 51, 110);
/* oklch */ color: oklch(34.1% 0.106 266.7);

Tailwind

colors: {
  custom: {
    50: '#656a98',
    500: '#1f336e',
    950: '#000000',
  },
}

SCSS

$custom: #1f336e;
$custom-light: #656a98;
$custom-dark: #000000;

JSON

{
  "hex": "#1f336e",
  "rgb": {
    "r": 31,
    "g": 51,
    "b": 110
  },
  "hsl": {
    "h": 224.81,
    "s": 56.028,
    "l": 27.647
  },
  "oklch": {
    "l": 0.34073,
    "c": 0.10553,
    "h": 266.7
  },
  "luminance": 0.03785
}

Semantic roles & 50–950 ramp

primary

#1F336E

secondary

#A28B47

accent

#B948DF

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #1F336E

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

Preview Lab → · Contrast checker → · Palette generator →