#1C58B3#1C58B3

#1C58B3 is a mid, vivid blue. Relative luminance 0.105; OKLCH L 47.7% C 0.157 H 259.1°. Best body text is #FFFFFF at 6.78:1 contrast (WCAG AA passes).

Color values

HEX	#1C58B3
RGB	rgb(28, 88, 179)
HSL	hsl(216, 73%, 41%)
HSV	hsv(216, 84%, 70%)
CMYK	cmyk(84.4%, 50.8%, 0%, 29.8%)
CIE-LAB	lab(38.69, 15.81, -53.60)
CIE-LCH	lch(38.69, 55.88, 286.44°)
OKLab	oklab(47.65% -0.0296 -0.1544)
OKLCH	oklch(47.65% 0.157 259.1)
XYZ	xyz(12.1023, 10.4795, 44.0240)
Luminance	0.1048 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C58B3 #B3771C

analogous

#1CA3B3 #1C58B3 #2B1CB3

triadic

#1C58B3 #B31C58 #58B31C

tetradic

#1C58B3 #B31CA3 #B3771C #1CB32B

square

#1C58B3 #B31CA3 #B3771C #1CB32B

split-complementary

#1C58B3 #B32B1C #A3B31C

monochromatic

#0B2449 #143E7E #1C58B3 #2E74DE #6397E7

Accessibility & contrast

On white

6.78

#1C58B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#1C58B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1C58B3

6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C58B3	#FFFFFF	#000000	##FFFFFF
##1C58B3	1.00	6.78	3.10	6.78
#FFFFFF	6.78	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D62B6

Deuteranopia (green-blind)

#0055B1

Tritanopia (blue-blind)

#006E7D

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #1c58b3;
/* rgb */ color: rgb(28, 88, 179);
/* oklch */ color: oklch(47.7% 0.157 259.1);

Tailwind

colors: {
  custom: {
    50: '#7486ca',
    500: '#1c58b3',
    950: '#000000',
  },
}

SCSS

$custom: #1c58b3;
$custom-light: #7486ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1c58b3",
  "rgb": {
    "r": 28,
    "g": 88,
    "b": 179
  },
  "hsl": {
    "h": 216.159,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.47653,
    "c": 0.15724,
    "h": 259.1
  },
  "luminance": 0.10481
}

Semantic roles & 50–950 ramp

primary

#1C58B3

secondary

#CBA05F

accent

#A738F0

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #1C58B3

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

Preview Lab → · Contrast checker → · Palette generator →