#4582C4
Closest named color: Cool Blue (#4984B8). oklch(59.6% 0.12 252.1), rgb(69, 130, 196).
Aa
Black text reads best on this color (5.24:1).
About this color
#4582C4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.120 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.021 away. Black text reads best on it, at 5.24:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.24:1 |
| White text | 4.00:1 |
Values
| HEX | #4582C4 |
| RGB | rgb(69, 130, 196) |
| HSL | hsl(211, 52%, 52%) |
| OKLCH | oklch(59.6% 0.12 252.1) |
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 #4582C4 | 4.00:1 | AA large text | Lc -72.6 | Content text, not long reading |
| Black text on #4582C4 | 5.24:1 | AA | Lc 37.0 | Non-text elements, placeholder text |
| #4582C4 text on white | 4.00:1 | AA large text | Lc 67.1 | Content text, not long reading |
| #4582C4 text on black | 5.24:1 | AA | Lc -34.5 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF5
oklch(93.6% 0.017 250.8)
-
Step 200
200
#CADBEF
oklch(88.5% 0.033 252.5)
-
Step 300
300
#A6C4E6
oklch(81% 0.058 251.8)
-
Step 400
400
#75A4DA
oklch(70.6% 0.094 252.5)
-
Step 500
500 (this color)
#4582C4
oklch(59.6% 0.12 252.1)
-
Step 600
600
#3176BD
oklch(55.7% 0.13 251.9)
-
Step 700
700
#2362A3
oklch(49% 0.122 252.3)
-
Step 800
800
#1F5184
oklch(42.8% 0.1 251.7)
-
Step 900
900
#1F436A
oklch(37.7% 0.079 252.3)
-
Step 950
950
#13283E
oklch(27.1% 0.049 251.1)
#4582C4 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) | #6586C7 | 0.037 |
| Deuteranopia (no green cones) | #547AC3 | 0.024 |
| Tritanopia (no blue cones) | #00919A | 0.094 |
| Achromatopsia (no color) | #7F7F7F | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4582C4
#4582C4
oklch(59.6% 0.12 252.1)
- #AA7218
#AA7218
oklch(59.7% 0.12 72.7)
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 #4582C4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.021
- Steel Blue #4682B4 ΔE 0.025
- Water Blue #0E87CC ΔE 0.030
- Windows Blue #3778BF ΔE 0.032
- Off Blue #5684AE ΔE 0.039
- Dusty Blue #5A86AD ΔE 0.045
- Blue NCS #118AB2 ΔE 0.049
- Faded Blue #658CBB ΔE 0.050
Use #4582C4 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.