#4584C2
Closest named color: Cool Blue (#4984B8). oklch(59.9% 0.115 250), rgb(69, 132, 194).
Aa
Black text reads best on this color (5.33:1).
About this color
#4584C2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.115 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.016 away. Black text reads best on it, at 5.33:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.33:1 |
| White text | 3.93:1 |
Values
| HEX | #4584C2 |
| RGB | rgb(69, 132, 194) |
| HSL | hsl(210, 51%, 52%) |
| OKLCH | oklch(59.9% 0.115 250) |
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 #4584C2 | 3.93:1 | AA large text | Lc -72.0 | Content text, not long reading |
| Black text on #4584C2 | 5.33:1 | AA | Lc 37.5 | Non-text elements, placeholder text |
| #4584C2 text on white | 3.93:1 | AA large text | Lc 66.5 | Content text, not long reading |
| #4584C2 text on black | 5.33:1 | 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
#CADBEE
oklch(88.5% 0.032 251.1)
-
Step 300
300
#A6C4E4
oklch(80.9% 0.056 250.2)
-
Step 400
400
#75A5D7
oklch(70.7% 0.09 250.2)
-
Step 500
500 (this color)
#4584C2
oklch(59.9% 0.115 250)
-
Step 600
600
#3077B9
oklch(55.7% 0.125 249.7)
-
Step 700
700
#2263A0
oklch(49% 0.117 250.5)
-
Step 800
800
#1E5181
oklch(42.6% 0.096 250.1)
-
Step 900
900
#1F4468
oklch(37.8% 0.075 249.9)
-
Step 950
950
#13283D
oklch(27.1% 0.048 250)
#4584C2 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) | #6987C5 | 0.041 |
| Deuteranopia (no green cones) | #587BC1 | 0.029 |
| Tritanopia (no blue cones) | #00939A | 0.092 |
| Achromatopsia (no color) | #808080 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4584C2
#4584C2
oklch(59.9% 0.115 250)
- #AB7224
#AB7224
oklch(59.9% 0.115 70)
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 #4584C2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.016
- Steel Blue #4682B4 ΔE 0.021
- Water Blue #0E87CC ΔE 0.030
- Off Blue #5684AE ΔE 0.034
- Windows Blue #3778BF ΔE 0.038
- Dusty Blue #5A86AD ΔE 0.039
- Blue NCS #118AB2 ΔE 0.044
- Faded Blue #658CBB ΔE 0.045
Use #4584C2 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.