#1C5AB3#1C5AB3

#1C5AB3 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.1% C 0.155 H 258.4°. Best body text is #FFFFFF at 6.64:1 contrast (WCAG AA passes).

Color values

HEX	#1C5AB3
RGB	rgb(28, 90, 179)
HSL	hsl(215, 73%, 41%)
HSV	hsv(215, 84%, 70%)
CMYK	cmyk(84.4%, 49.7%, 0%, 29.8%)
CIE-LAB	lab(39.26, 14.49, -52.67)
CIE-LCH	lch(39.26, 54.63, 285.38°)
OKLab	oklab(48.09% -0.0311 -0.1516)
OKLCH	oklch(48.09% 0.155 258.4)
XYZ	xyz(12.2687, 10.8123, 44.0794)
Luminance	0.1081 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C5AB3 #B3751C

analogous

#1CA5B3 #1C5AB3 #291CB3

triadic

#1C5AB3 #B31C5A #5AB31C

tetradic

#1C5AB3 #B31CA5 #B3751C #1CB329

square

#1C5AB3 #B31CA5 #B3751C #1CB329

split-complementary

#1C5AB3 #B3291C #A5B31C

monochromatic

#0B2549 #143F7E #1C5AB3 #2E76DE #6399E7

Accessibility & contrast

On white

6.64

#1C5AB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#1C5AB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1C5AB3

6.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C5AB3	#FFFFFF	#000000	##FFFFFF
##1C5AB3	1.00	6.64	3.16	6.64
#FFFFFF	6.64	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2364B6

Deuteranopia (green-blind)

#0056B1

Tritanopia (blue-blind)

#00707E

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #1c5ab3;
/* rgb */ color: rgb(28, 90, 179);
/* oklch */ color: oklch(48.1% 0.155 258.4);

Tailwind

colors: {
  custom: {
    50: '#7387ca',
    500: '#1c5ab3',
    950: '#000000',
  },
}

SCSS

$custom: #1c5ab3;
$custom-light: #7387ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1c5ab3",
  "rgb": {
    "r": 28,
    "g": 90,
    "b": 179
  },
  "hsl": {
    "h": 215.364,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.48092,
    "c": 0.1548,
    "h": 258.4
  },
  "luminance": 0.10814
}

Semantic roles & 50–950 ramp

primary

#1C5AB3

secondary

#CB9F5F

accent

#A438F0

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #1C5AB3

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

Preview Lab → · Contrast checker → · Palette generator →