#1D2F8F#1D2F8F

#1D2F8F is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.1% C 0.159 H 268.4°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#1D2F8F
RGB	rgb(29, 47, 143)
HSL	hsl(231, 66%, 34%)
HSV	hsv(231, 80%, 56%)
CMYK	cmyk(79.7%, 67.1%, 0%, 43.9%)
CIE-LAB	lab(24.57, 29.40, -54.87)
CIE-LCH	lch(24.57, 62.25, 298.18°)
OKLab	oklab(36.13% -0.0043 -0.1588)
OKLCH	oklch(36.13% 0.159 268.4)
XYZ	xyz(6.4794, 4.2767, 26.4653)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2F8F #8F7D1D

analogous

#1D688F #1D2F8F #441D8F

triadic

#1D2F8F #8F1D2F #2F8F1D

tetradic

#1D2F8F #8F1D68 #8F7D1D #1D8F44

square

#1D2F8F #8F1D68 #8F7D1D #1D8F44

split-complementary

#1D2F8F #8F441D #688F1D

monochromatic

#080E29 #131E5C #1D2F8F #2740C2 #4C62DB

Accessibility & contrast

On white

11.32

#1D2F8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1D2F8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2F8F

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2F8F	#FFFFFF	#000000	##FFFFFF
##1D2F8F	1.00	11.32	1.86	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004092

Deuteranopia (green-blind)

#00358D

Tritanopia (blue-blind)

#00495A

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1d2f8f;
/* rgb */ color: rgb(29, 47, 143);
/* oklch */ color: oklch(36.1% 0.159 268.4);

Tailwind

colors: {
  custom: {
    50: '#6d67b1',
    500: '#1d2f8f',
    950: '#000000',
  },
}

SCSS

$custom: #1d2f8f;
$custom-light: #6d67b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2f8f",
  "rgb": {
    "r": 29,
    "g": 47,
    "b": 143
  },
  "hsl": {
    "h": 230.526,
    "s": 66.279,
    "l": 33.725
  },
  "oklch": {
    "l": 0.36134,
    "c": 0.15888,
    "h": 268.4
  },
  "luminance": 0.04277
}

Semantic roles & 50–950 ramp

primary

#1D2F8F

secondary

#BDAB4B

accent

#CE3FE9

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1D2F8F

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

Preview Lab → · Contrast checker → · Palette generator →