#1F58B0#1F58B0

#1F58B0 is a mid, vivid blue. Relative luminance 0.104; OKLCH L 47.5% C 0.152 H 259.2°. Best body text is #FFFFFF at 6.82:1 contrast (WCAG AA passes).

Color values

HEX	#1F58B0
RGB	rgb(31, 88, 176)
HSL	hsl(216, 70%, 41%)
HSV	hsv(216, 82%, 69%)
CMYK	cmyk(82.4%, 50%, 0%, 31%)
CIE-LAB	lab(38.56, 14.89, -52.04)
CIE-LCH	lch(38.56, 54.13, 285.97°)
OKLab	oklab(47.51% -0.0285 -0.1498)
OKLCH	oklch(47.51% 0.152 259.2)
XYZ	xyz(11.8884, 10.4039, 42.4475)
Luminance	0.1041 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F58B0 #B0771F

analogous

#1FA0B0 #1F58B0 #2F1FB0

triadic

#1F58B0 #B01F58 #58B01F

tetradic

#1F58B0 #B01FA0 #B0771F #1FB02F

square

#1F58B0 #B01FA0 #B0771F #1FB02F

split-complementary

#1F58B0 #B02F1F #A0B01F

monochromatic

#0D2448 #163E7C #1F58B0 #3174DB #6597E4

Accessibility & contrast

On white

6.82

#1F58B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#1F58B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F58B0

6.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F58B0	#FFFFFF	#000000	##FFFFFF
##1F58B0	1.00	6.82	3.08	6.82
#FFFFFF	6.82	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2262B3

Deuteranopia (green-blind)

#0055AE

Tritanopia (blue-blind)

#006D7B

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #1f58b0;
/* rgb */ color: rgb(31, 88, 176);
/* oklch */ color: oklch(47.5% 0.152 259.2);

Tailwind

colors: {
  custom: {
    50: '#7486c8',
    500: '#1f58b0',
    950: '#000000',
  },
}

SCSS

$custom: #1f58b0;
$custom-light: #7486c8;
$custom-dark: #000000;

JSON

{
  "hex": "#1f58b0",
  "rgb": {
    "r": 31,
    "g": 88,
    "b": 176
  },
  "hsl": {
    "h": 216.414,
    "s": 70.048,
    "l": 40.588
  },
  "oklch": {
    "l": 0.47507,
    "c": 0.15247,
    "h": 259.2
  },
  "luminance": 0.10405
}

Semantic roles & 50–950 ramp

primary

#1F58B0

secondary

#C9A062

accent

#A73BED

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #1F58B0

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

Preview Lab → · Contrast checker → · Palette generator →