#4584C1
Closest named color: Cool Blue (#4984B8). oklch(59.9% 0.114 249.6), rgb(69, 132, 193).
Aa
Black text reads best on this color (5.32:1).
About this color
#4584C1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.114 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.014 away. Black text reads best on it, at 5.32:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.32:1 |
| White text | 3.94:1 |
Values
| HEX | #4584C1 |
| RGB | rgb(69, 132, 193) |
| HSL | hsl(210, 50%, 51%) |
| OKLCH | oklch(59.9% 0.114 249.6) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #4584C1 | 3.94:1 | AA large text | Lc -72.1 | Content text, not long reading |
| Black text on #4584C1 | 5.32:1 | AA | Lc 37.5 | Non-text elements, placeholder text |
| #4584C1 text on white | 3.94:1 | AA large text | Lc 66.6 | Content text, not long reading |
| #4584C1 text on black | 5.32:1 | AA | Lc -35.1 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF5
oklch(93.6% 0.017 250.8)
-
Step 200
200
#CADBED
oklch(88.4% 0.031 249.7)
-
Step 300
300
#A6C4E4
oklch(80.9% 0.056 250.2)
-
Step 400
400
#75A5D6
oklch(70.7% 0.089 249.7)
-
Step 500
500 (this color)
#4584C1
oklch(59.9% 0.114 249.6)
-
Step 600
600
#3077B8
oklch(55.6% 0.123 249.4)
-
Step 700
700
#22649F
oklch(49.2% 0.115 249.4)
-
Step 800
800
#1E5281
oklch(42.8% 0.095 249.2)
-
Step 900
900
#1F4467
oklch(37.7% 0.074 249.2)
-
Step 950
950
#13283C
oklch(27% 0.046 248.8)
#4584C1 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #6987C4 | 0.041 |
| Deuteranopia (no green cones) | #597BC0 | 0.029 |
| Tritanopia (no blue cones) | #00929A | 0.089 |
| Achromatopsia (no color) | #808080 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4584C1
#4584C1
oklch(59.9% 0.114 249.6)
- #AB7226
#AB7226
oklch(59.9% 0.114 69.5)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #4584C1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.014
- Steel Blue #4682B4 ΔE 0.020
- Water Blue #0E87CC ΔE 0.031
- Off Blue #5684AE ΔE 0.032
- Windows Blue #3778BF ΔE 0.038
- Dusty Blue #5A86AD ΔE 0.038
- Blue NCS #118AB2 ΔE 0.043
- Faded Blue #658CBB ΔE 0.044
Use #4584C1 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.