#1D308E#1D308E

#1D308E is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.2% C 0.156 H 268.2°. Best body text is #FFFFFF at 11.26:1 contrast (WCAG AA passes).

Color values

HEX	#1D308E
RGB	rgb(29, 48, 142)
HSL	hsl(230, 66%, 34%)
HSV	hsv(230, 80%, 56%)
CMYK	cmyk(79.6%, 66.2%, 0%, 44.3%)
CIE-LAB	lab(24.73, 28.34, -53.99)
CIE-LCH	lch(24.73, 60.98, 297.70°)
OKLab	oklab(36.22% -0.0048 -0.1562)
OKLCH	oklch(36.22% 0.156 268.2)
XYZ	xyz(6.4444, 4.3274, 26.0816)
Luminance	0.0433 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D308E #8E7B1D

analogous

#1D688E #1D308E #431D8E

triadic

#1D308E #8E1D30 #308E1D

tetradic

#1D308E #8E1D68 #8E7B1D #1D8E43

square

#1D308E #8E1D68 #8E7B1D #1D8E43

split-complementary

#1D308E #8E431D #688E1D

monochromatic

#080E28 #131F5B #1D308E #2741C1 #4B63DA

Accessibility & contrast

On white

11.26

#1D308E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1D308E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D308E

11.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D308E	#FFFFFF	#000000	##FFFFFF
##1D308E	1.00	11.26	1.87	11.26
#FFFFFF	11.26	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004091

Deuteranopia (green-blind)

#00358C

Tritanopia (blue-blind)

#00495A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1d308e;
/* rgb */ color: rgb(29, 48, 142);
/* oklch */ color: oklch(36.2% 0.156 268.2);

Tailwind

colors: {
  custom: {
    50: '#6d68b0',
    500: '#1d308e',
    950: '#000000',
  },
}

SCSS

$custom: #1d308e;
$custom-light: #6d68b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1d308e",
  "rgb": {
    "r": 29,
    "g": 48,
    "b": 142
  },
  "hsl": {
    "h": 229.912,
    "s": 66.082,
    "l": 33.529
  },
  "oklch": {
    "l": 0.36222,
    "c": 0.15631,
    "h": 268.2
  },
  "luminance": 0.04328
}

Semantic roles & 50–950 ramp

primary

#1D308E

secondary

#BDA94A

accent

#CC3FE9

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1D308E

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

Preview Lab → · Contrast checker → · Palette generator →