#1F4680#1F4680

#1F4680 is a dark, moderate blue. Relative luminance 0.062; OKLCH L 39.9% C 0.107 H 258.4°. Best body text is #FFFFFF at 9.35:1 contrast (WCAG AA passes).

Color values

HEX	#1F4680
RGB	rgb(31, 70, 128)
HSL	hsl(216, 61%, 31%)
HSV	hsv(216, 76%, 50%)
CMYK	cmyk(75.8%, 45.3%, 0%, 49.8%)
CIE-LAB	lab(29.98, 7.82, -36.76)
CIE-LCH	lch(29.98, 37.59, 282.01°)
OKLab	oklab(39.87% -0.0217 -0.1052)
OKLCH	oklch(39.87% 0.107 258.4)
XYZ	xyz(6.6501, 6.2294, 21.2698)
Luminance	0.0623 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4680 #80591F

analogous

#1F7680 #1F4680 #281F80

triadic

#1F4680 #801F46 #46801F

tetradic

#1F4680 #801F76 #80591F #1F8028

square

#1F4680 #801F76 #80591F #1F8028

split-complementary

#1F4680 #80281F #76801F

monochromatic

#07101D #132B4F #1F4680 #2B61B1 #477FD2

Accessibility & contrast

On white

9.35

#1F4680 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#1F4680 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4680

9.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4680	#FFFFFF	#000000	##FFFFFF
##1F4680	1.00	9.35	2.25	9.35
#FFFFFF	9.35	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#294B82

Deuteranopia (green-blind)

#17427F

Tritanopia (blue-blind)

#00545C

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1f4680;
/* rgb */ color: rgb(31, 70, 128);
/* oklch */ color: oklch(39.9% 0.107 258.4);

Tailwind

colors: {
  custom: {
    50: '#6979a5',
    500: '#1f4680',
    950: '#000000',
  },
}

SCSS

$custom: #1f4680;
$custom-light: #6979a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4680",
  "rgb": {
    "r": 31,
    "g": 70,
    "b": 128
  },
  "hsl": {
    "h": 215.876,
    "s": 61.006,
    "l": 31.176
  },
  "oklch": {
    "l": 0.39871,
    "c": 0.10742,
    "h": 258.4
  },
  "luminance": 0.0623
}

Semantic roles & 50–950 ramp

primary

#1F4680

secondary

#B38848

accent

#A444E4

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#07090F

muted

#7A7B7F

Preview Lab

Preview with #1F4680

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

Preview Lab → · Contrast checker → · Palette generator →