#1F2D7B#1F2D7B

#1F2D7B is a dark, vivid blue. Relative luminance 0.036; OKLCH L 33.9% C 0.133 H 269.9°. Best body text is #FFFFFF at 12.21:1 contrast (WCAG AA passes).

Color values

HEX	#1F2D7B
RGB	rgb(31, 45, 123)
HSL	hsl(231, 60%, 30%)
HSV	hsv(231, 75%, 48%)
CMYK	cmyk(74.8%, 63.4%, 0%, 51.8%)
CIE-LAB	lab(22.29, 23.25, -46.05)
CIE-LCH	lch(22.29, 51.59, 296.79°)
OKLab	oklab(33.92% -0.0002 -0.133)
OKLCH	oklch(33.92% 0.133 269.9)
XYZ	xyz(5.0774, 3.5976, 19.1619)
Luminance	0.0360 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2D7B #7B6D1F

analogous

#1F5B7B #1F2D7B #3F1F7B

triadic

#1F2D7B #7B1F2D #2D7B1F

tetradic

#1F2D7B #7B1F5B #7B6D1F #1F7B3F

square

#1F2D7B #7B1F5B #7B6D1F #1F7B3F

split-complementary

#1F2D7B #7B3F1F #5B7B1F

monochromatic

#060919 #131B4A #1F2D7B #2B3FAC #445AD0

Accessibility & contrast

On white

12.21

#1F2D7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#1F2D7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2D7B

12.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2D7B	#FFFFFF	#000000	##FFFFFF
##1F2D7B	1.00	12.21	1.72	12.21
#FFFFFF	12.21	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A7E

Deuteranopia (green-blind)

#003179

Tritanopia (blue-blind)

#00414F

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1f2d7b;
/* rgb */ color: rgb(31, 45, 123);
/* oklch */ color: oklch(33.9% 0.133 269.9);

Tailwind

colors: {
  custom: {
    50: '#6965a2',
    500: '#1f2d7b',
    950: '#000000',
  },
}

SCSS

$custom: #1f2d7b;
$custom-light: #6965a2;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2d7b",
  "rgb": {
    "r": 31,
    "g": 45,
    "b": 123
  },
  "hsl": {
    "h": 230.87,
    "s": 59.74,
    "l": 30.196
  },
  "oklch": {
    "l": 0.3392,
    "c": 0.13296,
    "h": 269.9
  },
  "luminance": 0.03598
}

Semantic roles & 50–950 ramp

primary

#1F2D7B

secondary

#AE9F48

accent

#CB45E3

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07050F

muted

#7A7A7F

Preview Lab

Preview with #1F2D7B

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

Preview Lab → · Contrast checker → · Palette generator →