#1F58AD#1F58AD

#1F58AD is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.3% C 0.148 H 258.8°. Best body text is #FFFFFF at 6.87:1 contrast (WCAG AA passes).

Color values

HEX	#1F58AD
RGB	rgb(31, 88, 173)
HSL	hsl(216, 70%, 40%)
HSV	hsv(216, 82%, 68%)
CMYK	cmyk(82.1%, 49.1%, 0%, 32.2%)
CIE-LAB	lab(38.35, 13.70, -50.60)
CIE-LCH	lch(38.35, 52.42, 285.15°)
OKLab	oklab(47.28% -0.0289 -0.1456)
OKLCH	oklch(47.28% 0.148 258.8)
XYZ	xyz(11.5949, 10.2865, 40.9014)
Luminance	0.1029 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F58AD #AD741F

analogous

#1F9FAD #1F58AD #2D1FAD

triadic

#1F58AD #AD1F58 #58AD1F

tetradic

#1F58AD #AD1F9F #AD741F #1FAD2D

square

#1F58AD #AD1F9F #AD741F #1FAD2D

split-complementary

#1F58AD #AD2D1F #9FAD1F

monochromatic

#0C2345 #163E79 #1F58AD #2F74DA #6397E3

Accessibility & contrast

On white

6.87

#1F58AD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#1F58AD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F58AD

6.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F58AD	#FFFFFF	#000000	##FFFFFF
##1F58AD	1.00	6.87	3.06	6.87
#FFFFFF	6.87	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2661B0

Deuteranopia (green-blind)

#0054AB

Tritanopia (blue-blind)

#006D7A

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #1f58ad;
/* rgb */ color: rgb(31, 88, 173);
/* oklch */ color: oklch(47.3% 0.148 258.8);

Tailwind

colors: {
  custom: {
    50: '#7386c6',
    500: '#1f58ad',
    950: '#000000',
  },
}

SCSS

$custom: #1f58ad;
$custom-light: #7386c6;
$custom-dark: #000000;

JSON

{
  "hex": "#1f58ad",
  "rgb": {
    "r": 31,
    "g": 88,
    "b": 173
  },
  "hsl": {
    "h": 215.915,
    "s": 69.608,
    "l": 40
  },
  "oklch": {
    "l": 0.47283,
    "c": 0.14839,
    "h": 258.8
  },
  "luminance": 0.10288
}

Semantic roles & 50–950 ramp

primary

#1F58AD

secondary

#C89E60

accent

#A53BEC

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#090B13

muted

#7B7C82

Preview Lab

Preview with #1F58AD

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

Preview Lab → · Contrast checker → · Palette generator →