#1D4281#1D4281

#1D4281 is a dark, moderate blue. Relative luminance 0.057; OKLCH L 38.9% C 0.115 H 260.3°. Best body text is #FFFFFF at 9.77:1 contrast (WCAG AA passes).

Color values

HEX	#1D4281
RGB	rgb(29, 66, 129)
HSL	hsl(218, 63%, 31%)
HSV	hsv(218, 78%, 51%)
CMYK	cmyk(77.5%, 48.8%, 0%, 49.4%)
CIE-LAB	lab(28.75, 10.69, -39.37)
CIE-LCH	lch(28.75, 40.79, 285.19°)
OKLab	oklab(38.92% -0.0192 -0.113)
OKLCH	oklch(38.92% 0.115 260.3)
XYZ	xyz(6.4159, 5.7419, 21.5348)
Luminance	0.0574 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4281 #815C1D

analogous

#1D7481 #1D4281 #2A1D81

triadic

#1D4281 #811D42 #42811D

tetradic

#1D4281 #811D74 #815C1D #1D812A

square

#1D4281 #811D74 #815C1D #1D812A

split-complementary

#1D4281 #812A1D #74811D

monochromatic

#070F1D #12284F #1D4281 #285CB3 #4479D5

Accessibility & contrast

On white

9.77

#1D4281 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#1D4281 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4281

9.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4281	#FFFFFF	#000000	##FFFFFF
##1D4281	1.00	9.77	2.15	9.77
#FFFFFF	9.77	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#204983

Deuteranopia (green-blind)

#044080

Tritanopia (blue-blind)

#00515B

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1d4281;
/* rgb */ color: rgb(29, 66, 129);
/* oklch */ color: oklch(38.9% 0.115 260.3);

Tailwind

colors: {
  custom: {
    50: '#6875a6',
    500: '#1d4281',
    950: '#000000',
  },
}

SCSS

$custom: #1d4281;
$custom-light: #6875a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4281",
  "rgb": {
    "r": 29,
    "g": 66,
    "b": 129
  },
  "hsl": {
    "h": 217.8,
    "s": 63.291,
    "l": 30.98
  },
  "oklch": {
    "l": 0.38922,
    "c": 0.11461,
    "h": 260.3
  },
  "luminance": 0.05743
}

Semantic roles & 50–950 ramp

primary

#1D4281

secondary

#B48B46

accent

#A941E6

background

#F6F7FA

surface

#EBEDF4

border

#C6C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1D4281

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

Preview Lab → · Contrast checker → · Palette generator →