#1F2B8E#1F2B8E

#1F2B8E is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.4% C 0.162 H 270.0°. Best body text is #FFFFFF at 11.70:1 contrast (WCAG AA passes).

Color values

HEX	#1F2B8E
RGB	rgb(31, 43, 142)
HSL	hsl(234, 64%, 34%)
HSV	hsv(234, 78%, 56%)
CMYK	cmyk(78.2%, 69.7%, 0%, 44.3%)
CIE-LAB	lab(23.58, 31.87, -55.88)
CIE-LCH	lch(23.58, 64.32, 299.70°)
OKLab	oklab(35.41% 0 -0.1617)
OKLCH	oklch(35.41% 0.162 270)
XYZ	xyz(6.3098, 3.9714, 26.0199)
Luminance	0.0397 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2B8E #8E821F

analogous

#1F638E #1F2B8E #4B1F8E

triadic

#1F2B8E #8E1F2B #2B8E1F

tetradic

#1F2B8E #8E1F63 #8E821F #1F8E4B

square

#1F2B8E #8E1F63 #8E821F #1F8E4B

split-complementary

#1F2B8E #8E4B1F #638E1F

monochromatic

#090D2A #141C5C #1F2B8E #2A3AC0 #4F5ED9

Accessibility & contrast

On white

11.70

#1F2B8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#1F2B8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2B8E

11.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2B8E	#FFFFFF	#000000	##FFFFFF
##1F2B8E	1.00	11.70	1.79	11.70
#FFFFFF	11.70	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D91

Deuteranopia (green-blind)

#00338C

Tritanopia (blue-blind)

#004659

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1f2b8e;
/* rgb */ color: rgb(31, 43, 142);
/* oklch */ color: oklch(35.4% 0.162 270.0);

Tailwind

colors: {
  custom: {
    50: '#6e64b0',
    500: '#1f2b8e',
    950: '#000000',
  },
}

SCSS

$custom: #1f2b8e;
$custom-light: #6e64b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2b8e",
  "rgb": {
    "r": 31,
    "g": 43,
    "b": 142
  },
  "hsl": {
    "h": 233.514,
    "s": 64.162,
    "l": 33.922
  },
  "oklch": {
    "l": 0.3541,
    "c": 0.16173,
    "h": 270
  },
  "luminance": 0.03972
}

Semantic roles & 50–950 ramp

primary

#1F2B8E

secondary

#BBB04D

accent

#D541E7

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080511

muted

#7B7A80

Preview Lab

Preview with #1F2B8E

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

Preview Lab → · Contrast checker → · Palette generator →