#1F4380#1F4380

#1F4380 is a dark, moderate blue. Relative luminance 0.059; OKLCH L 39.2% C 0.111 H 260.3°. Best body text is #FFFFFF at 9.66:1 contrast (WCAG AA passes).

Color values

HEX	#1F4380
RGB	rgb(31, 67, 128)
HSL	hsl(218, 61%, 31%)
HSV	hsv(218, 76%, 50%)
CMYK	cmyk(75.8%, 47.7%, 0%, 49.8%)
CIE-LAB	lab(29.07, 9.88, -38.24)
CIE-LCH	lch(29.07, 39.49, 284.48°)
OKLab	oklab(39.16% -0.0188 -0.1096)
OKLCH	oklch(39.16% 0.111 260.3)
XYZ	xyz(6.4671, 5.8634, 21.2088)
Luminance	0.0586 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4380 #805C1F

analogous

#1F7380 #1F4380 #2B1F80

triadic

#1F4380 #801F43 #43801F

tetradic

#1F4380 #801F73 #805C1F #1F802B

square

#1F4380 #801F73 #805C1F #1F802B

split-complementary

#1F4380 #802B1F #73801F

monochromatic

#070F1D #13294F #1F4380 #2B5DB1 #477BD2

Accessibility & contrast

On white

9.66

#1F4380 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#1F4380 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4380

9.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4380	#FFFFFF	#000000	##FFFFFF
##1F4380	1.00	9.66	2.17	9.66
#FFFFFF	9.66	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234982

Deuteranopia (green-blind)

#0D407F

Tritanopia (blue-blind)

#00515B

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1f4380;
/* rgb */ color: rgb(31, 67, 128);
/* oklch */ color: oklch(39.2% 0.111 260.3);

Tailwind

colors: {
  custom: {
    50: '#6976a5',
    500: '#1f4380',
    950: '#000000',
  },
}

SCSS

$custom: #1f4380;
$custom-light: #6976a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4380",
  "rgb": {
    "r": 31,
    "g": 67,
    "b": 128
  },
  "hsl": {
    "h": 217.732,
    "s": 61.006,
    "l": 31.176
  },
  "oklch": {
    "l": 0.39162,
    "c": 0.1112,
    "h": 260.3
  },
  "luminance": 0.05864
}

Semantic roles & 50–950 ramp

primary

#1F4380

secondary

#B38B48

accent

#A944E4

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #1F4380

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

Preview Lab → · Contrast checker → · Palette generator →