#4580C6
Closest named color: Cool Blue (#4984B8). oklch(59.3% 0.124 254), rgb(69, 128, 198).
Aa
Black text reads best on this color (5.15:1).
About this color
#4580C6 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.124 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.027 away. Black text reads best on it, at 5.15:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.15:1 |
| White text | 4.07:1 |
Values
| HEX | #4580C6 |
| RGB | rgb(69, 128, 198) |
| HSL | hsl(213, 53%, 52%) |
| OKLCH | oklch(59.3% 0.124 254) |
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 #4580C6 | 4.07:1 | AA large text | Lc -73.2 | Content text, not long reading |
| Black text on #4580C6 | 5.15:1 | AA | Lc 36.4 | Non-text elements, placeholder text |
| #4580C6 text on white | 4.07:1 | AA large text | Lc 67.7 | Content text, not long reading |
| #4580C6 text on black | 5.15:1 | AA | Lc -34.0 | 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 600.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF5
oklch(93.7% 0.016 253.9)
-
Step 200
200
#CBDBEE
oklch(88.5% 0.031 252.7)
-
Step 300
300
#A8C3E5
oklch(80.9% 0.057 254.3)
-
Step 400
400
#79A4D8
oklch(70.8% 0.09 253.7)
-
Step 500
500
#568CCD
oklch(63.1% 0.114 254)
-
Step 600
600 (this color)
#4580C6
oklch(59.3% 0.124 254)
-
Step 700
700
#2C62A0
oklch(49.1% 0.115 253.8)
-
Step 800
800
#265082
oklch(42.7% 0.096 254.3)
-
Step 900
900
#234368
oklch(37.7% 0.074 253.3)
-
Step 950
950
#15273D
oklch(26.9% 0.048 254.2)
#4580C6 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) | #6184C9 | 0.033 |
| Deuteranopia (no green cones) | #4F78C5 | 0.022 |
| Tritanopia (no blue cones) | #00909A | 0.099 |
| Achromatopsia (no color) | #7E7E7E | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4580C6
#4580C6
oklch(59.3% 0.124 254)
- #A97105
#A97105
oklch(59.3% 0.124 74.3)
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 #4580C6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.027
- Windows Blue #3778BF ΔE 0.028
- Steel Blue #4682B4 ΔE 0.030
- Water Blue #0E87CC ΔE 0.031
- Off Blue #5684AE ΔE 0.044
- Dusty Blue #5A86AD ΔE 0.050
- Nice Blue #107AB0 ΔE 0.052
- Dark Sky Blue #448EE4 ΔE 0.054
Use #4580C6 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.