#1C59B0#1C59B0

#1C59B0 is a mid, vivid blue. Relative luminance 0.105; OKLCH L 47.6% C 0.152 H 258.3°. Best body text is #FFFFFF at 6.76:1 contrast (WCAG AA passes).

Color values

HEX	#1C59B0
RGB	rgb(28, 89, 176)
HSL	hsl(215, 73%, 40%)
HSV	hsv(215, 84%, 69%)
CMYK	cmyk(84.1%, 49.4%, 0%, 31%)
CIE-LAB	lab(38.77, 13.96, -51.70)
CIE-LCH	lch(38.77, 53.55, 285.11°)
OKLab	oklab(47.65% -0.0308 -0.1488)
OKLCH	oklch(47.65% 0.152 258.3)
XYZ	xyz(11.8849, 10.5247, 42.4710)
Luminance	0.1053 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C59B0 #B0731C

analogous

#1CA3B0 #1C59B0 #291CB0

triadic

#1C59B0 #B01C59 #59B01C

tetradic

#1C59B0 #B01CA3 #B0731C #1CB029

square

#1C59B0 #B01CA3 #B0731C #1CB029

split-complementary

#1C59B0 #B0291C #A3B01C

monochromatic

#0B2446 #143E7B #1C59B0 #2C75DD #6198E6

Accessibility & contrast

On white

6.76

#1C59B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#1C59B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1C59B0

6.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C59B0	#FFFFFF	#000000	##FFFFFF
##1C59B0	1.00	6.76	3.11	6.76
#FFFFFF	6.76	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2462B3

Deuteranopia (green-blind)

#0055AE

Tritanopia (blue-blind)

#006E7C

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #1c59b0;
/* rgb */ color: rgb(28, 89, 176);
/* oklch */ color: oklch(47.6% 0.152 258.3);

Tailwind

colors: {
  custom: {
    50: '#7387c8',
    500: '#1c59b0',
    950: '#000000',
  },
}

SCSS

$custom: #1c59b0;
$custom-light: #7387c8;
$custom-dark: #000000;

JSON

{
  "hex": "#1c59b0",
  "rgb": {
    "r": 28,
    "g": 89,
    "b": 176
  },
  "hsl": {
    "h": 215.27,
    "s": 72.549,
    "l": 40
  },
  "oklch": {
    "l": 0.47647,
    "c": 0.15197,
    "h": 258.3
  },
  "luminance": 0.10526
}

Semantic roles & 50–950 ramp

primary

#1C59B0

secondary

#CA9D5E

accent

#A439EF

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#090B13

muted

#7B7C82

Preview Lab

Preview with #1C59B0

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

Preview Lab → · Contrast checker → · Palette generator →