#1F2F6B#1F2F6B

#1F2F6B is a dark, moderate blue. Relative luminance 0.034; OKLCH L 32.9% C 0.106 H 268.7°. Best body text is #FFFFFF at 12.52:1 contrast (WCAG AA passes).

Color values

HEX	#1F2F6B
RGB	rgb(31, 47, 107)
HSL	hsl(227, 55%, 27%)
HSV	hsv(227, 71%, 42%)
CMYK	cmyk(71%, 56.1%, 0%, 58%)
CIE-LAB	lab(21.53, 15.50, -37.05)
CIE-LCH	lch(21.53, 40.16, 292.70°)
OKLab	oklab(32.93% -0.0025 -0.1065)
OKLCH	oklch(32.93% 0.107 268.7)
XYZ	xyz(4.2345, 3.3855, 14.3374)
Luminance	0.0339 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2F6B #6B5B1F

analogous

#1F556B #1F2F6B #351F6B

triadic

#1F2F6B #6B1F2F #2F6B1F

tetradic

#1F2F6B #6B1F55 #6B5B1F #1F6B35

square

#1F2F6B #6B1F55 #6B5B1F #1F6B35

split-complementary

#1F2F6B #6B351F #556B1F

monochromatic

#070A18 #111A3C #1F2F6B #2D449A #3D5AC7

Accessibility & contrast

On white

12.52

#1F2F6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1F2F6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2F6B

12.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2F6B	#FFFFFF	#000000	##FFFFFF
##1F2F6B	1.00	12.52	1.68	12.52
#FFFFFF	12.52	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#06376D

Deuteranopia (green-blind)

#00306A

Tritanopia (blue-blind)

#003D48

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f2f6b;
/* rgb */ color: rgb(31, 47, 107);
/* oklch */ color: oklch(32.9% 0.106 268.7);

Tailwind

colors: {
  custom: {
    50: '#656796',
    500: '#1f2f6b',
    950: '#000000',
  },
}

SCSS

$custom: #1f2f6b;
$custom-light: #656796;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2f6b",
  "rgb": {
    "r": 31,
    "g": 47,
    "b": 107
  },
  "hsl": {
    "h": 227.368,
    "s": 55.072,
    "l": 27.059
  },
  "oklch": {
    "l": 0.32927,
    "c": 0.1065,
    "h": 268.7
  },
  "luminance": 0.03386
}

Semantic roles & 50–950 ramp

primary

#1F2F6B

secondary

#9F8D47

accent

#BF49DE

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #1F2F6B

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

Preview Lab → · Contrast checker → · Palette generator →