#1D2B8F#1D2B8F

#1D2B8F is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.4% C 0.164 H 269.3°. Best body text is #FFFFFF at 11.70:1 contrast (WCAG AA passes).

Color values

HEX	#1D2B8F
RGB	rgb(29, 43, 143)
HSL	hsl(233, 66%, 34%)
HSV	hsv(233, 80%, 56%)
CMYK	cmyk(79.7%, 69.9%, 0%, 43.9%)
CIE-LAB	lab(23.58, 32.05, -56.50)
CIE-LCH	lch(23.58, 64.96, 299.56°)
OKLab	oklab(35.41% -0.0021 -0.1636)
OKLCH	oklch(35.41% 0.164 269.3)
XYZ	xyz(6.3268, 3.9714, 26.4144)
Luminance	0.0397 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2B8F #8F811D

analogous

#1D648F #1D2B8F #481D8F

triadic

#1D2B8F #8F1D2B #2B8F1D

tetradic

#1D2B8F #8F1D64 #8F811D #1D8F48

square

#1D2B8F #8F1D64 #8F811D #1D8F48

split-complementary

#1D2B8F #8F481D #648F1D

monochromatic

#080C29 #131C5C #1D2B8F #273AC2 #4C5DDB

Accessibility & contrast

On white

11.70

#1D2B8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#1D2B8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2B8F

11.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2B8F	#FFFFFF	#000000	##FFFFFF
##1D2B8F	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)

#003E92

Deuteranopia (green-blind)

#00338D

Tritanopia (blue-blind)

#004659

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1d2b8f;
/* rgb */ color: rgb(29, 43, 143);
/* oklch */ color: oklch(35.4% 0.164 269.3);

Tailwind

colors: {
  custom: {
    50: '#6e64b1',
    500: '#1d2b8f',
    950: '#000000',
  },
}

SCSS

$custom: #1d2b8f;
$custom-light: #6e64b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2b8f",
  "rgb": {
    "r": 29,
    "g": 43,
    "b": 143
  },
  "hsl": {
    "h": 232.632,
    "s": 66.279,
    "l": 33.725
  },
  "oklch": {
    "l": 0.35413,
    "c": 0.1636,
    "h": 269.3
  },
  "luminance": 0.03972
}

Semantic roles & 50–950 ramp

primary

#1D2B8F

secondary

#BDAF4B

accent

#D43FE9

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080511

muted

#7B7A80

Preview Lab

Preview with #1D2B8F

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

Preview Lab → · Contrast checker → · Palette generator →