#1D308F#1D308F

#1D308F is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.3% C 0.158 H 268.2°. Best body text is #FFFFFF at 11.22:1 contrast (WCAG AA passes).

Color values

HEX	#1D308F
RGB	rgb(29, 48, 143)
HSL	hsl(230, 66%, 34%)
HSV	hsv(230, 80%, 56%)
CMYK	cmyk(79.7%, 66.4%, 0%, 43.9%)
CIE-LAB	lab(24.82, 28.73, -54.46)
CIE-LCH	lch(24.82, 61.57, 297.81°)
OKLab	oklab(36.32% -0.0049 -0.1576)
OKLCH	oklch(36.32% 0.158 268.2)
XYZ	xyz(6.5199, 4.3575, 26.4787)
Luminance	0.0436 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D308F #8F7C1D

analogous

#1D698F #1D308F #431D8F

triadic

#1D308F #8F1D30 #308F1D

tetradic

#1D308F #8F1D69 #8F7C1D #1D8F43

square

#1D308F #8F1D69 #8F7C1D #1D8F43

split-complementary

#1D308F #8F431D #698F1D

monochromatic

#080E29 #131F5C #1D308F #2741C2 #4C64DB

Accessibility & contrast

On white

11.22

#1D308F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#1D308F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D308F

11.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D308F	#FFFFFF	#000000	##FFFFFF
##1D308F	1.00	11.22	1.87	11.22
#FFFFFF	11.22	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004092

Deuteranopia (green-blind)

#00368D

Tritanopia (blue-blind)

#00495B

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1d308f;
/* rgb */ color: rgb(29, 48, 143);
/* oklch */ color: oklch(36.3% 0.158 268.2);

Tailwind

colors: {
  custom: {
    50: '#6d68b1',
    500: '#1d308f',
    950: '#000000',
  },
}

SCSS

$custom: #1d308f;
$custom-light: #6d68b1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d308f",
  "rgb": {
    "r": 29,
    "g": 48,
    "b": 143
  },
  "hsl": {
    "h": 230,
    "s": 66.279,
    "l": 33.725
  },
  "oklch": {
    "l": 0.3632,
    "c": 0.15768,
    "h": 268.2
  },
  "luminance": 0.04358
}

Semantic roles & 50–950 ramp

primary

#1D308F

secondary

#BDAA4B

accent

#CD3FE9

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080611

muted

#7B7A80

Preview Lab

Preview with #1D308F

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

Preview Lab → · Contrast checker → · Palette generator →