#1F2F7B#1F2F7B

#1F2F7B is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.3% C 0.130 H 269.2°. Best body text is #FFFFFF at 11.99:1 contrast (WCAG AA passes).

Color values

HEX	#1F2F7B
RGB	rgb(31, 47, 123)
HSL	hsl(230, 60%, 30%)
HSV	hsv(230, 75%, 48%)
CMYK	cmyk(74.8%, 61.8%, 0%, 51.8%)
CIE-LAB	lab(22.84, 21.85, -45.16)
CIE-LCH	lch(22.84, 50.17, 295.82°)
OKLab	oklab(34.33% -0.0018 -0.1303)
OKLCH	oklch(34.33% 0.13 269.2)
XYZ	xyz(5.1555, 3.7539, 19.1879)
Luminance	0.0375 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2F7B #7B6B1F

analogous

#1F5D7B #1F2F7B #3D1F7B

triadic

#1F2F7B #7B1F2F #2F7B1F

tetradic

#1F2F7B #7B1F5D #7B6B1F #1F7B3D

square

#1F2F7B #7B1F5D #7B6B1F #1F7B3D

split-complementary

#1F2F7B #7B3D1F #5D7B1F

monochromatic

#060A19 #131C4A #1F2F7B #2B42AC #445DD0

Accessibility & contrast

On white

11.99

#1F2F7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#1F2F7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2F7B

11.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2F7B	#FFFFFF	#000000	##FFFFFF
##1F2F7B	1.00	11.99	1.75	11.99
#FFFFFF	11.99	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B7E

Deuteranopia (green-blind)

#00327A

Tritanopia (blue-blind)

#004250

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1f2f7b;
/* rgb */ color: rgb(31, 47, 123);
/* oklch */ color: oklch(34.3% 0.130 269.2);

Tailwind

colors: {
  custom: {
    50: '#6967a2',
    500: '#1f2f7b',
    950: '#000000',
  },
}

SCSS

$custom: #1f2f7b;
$custom-light: #6967a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2f7b",
  "rgb": {
    "r": 31,
    "g": 47,
    "b": 123
  },
  "hsl": {
    "h": 229.565,
    "s": 59.74,
    "l": 30.196
  },
  "oklch": {
    "l": 0.34325,
    "c": 0.13033,
    "h": 269.2
  },
  "luminance": 0.03754
}

Semantic roles & 50–950 ramp

primary

#1F2F7B

secondary

#AE9C48

accent

#C745E3

background

#F6F6FA

surface

#ECEBF3

border

#C7C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #1F2F7B

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

Preview Lab → · Contrast checker → · Palette generator →