#4282C7
Closest named color: Cool Blue (#4984B8). oklch(59.6% 0.125 252.2), rgb(66, 130, 199).
Aa
Black text reads best on this color (5.24:1).
About this color
#4282C7 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.125 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.026 away. Black text reads best on it, at 5.24:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.24:1 |
| White text | 4.00:1 |
Values
| HEX | #4282C7 |
| RGB | rgb(66, 130, 199) |
| HSL | hsl(211, 54%, 52%) |
| OKLCH | oklch(59.6% 0.125 252.2) |
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 #4282C7 | 4.00:1 | AA large text | Lc -72.6 | Content text, not long reading |
| Black text on #4282C7 | 5.24:1 | AA | Lc 37.0 | Non-text elements, placeholder text |
| #4282C7 text on white | 4.00:1 | AA large text | Lc 67.1 | Content text, not long reading |
| #4282C7 text on black | 5.24:1 | AA | Lc -34.6 | 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
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#CADBF0
oklch(88.5% 0.034 253.7)
-
Step 300
300
#A5C4E8
oklch(81% 0.061 252.4)
-
Step 400
400
#73A4DC
oklch(70.6% 0.098 252.5)
-
Step 500
500 (this color)
#4282C7
oklch(59.6% 0.125 252.2)
-
Step 600
600
#2D75C0
oklch(55.5% 0.137 252.4)
-
Step 700
700
#1F62A5
oklch(49% 0.126 252.1)
-
Step 800
800
#1C5086
oklch(42.6% 0.105 252.4)
-
Step 900
900
#1E436B
oklch(37.7% 0.081 252.3)
-
Step 950
950
#12283F
oklch(27.1% 0.051 251.2)
#4282C7 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) | #6486CA | 0.038 |
| Deuteranopia (no green cones) | #5179C6 | 0.026 |
| Tritanopia (no blue cones) | #00929B | 0.098 |
| Achromatopsia (no color) | #7F7F7F | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4282C7
#4282C7
oklch(59.6% 0.125 252.2)
- #AC710B
#AC710B
oklch(59.7% 0.125 72.3)
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 #4282C7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.026
- Water Blue #0E87CC ΔE 0.027
- Steel Blue #4682B4 ΔE 0.030
- Windows Blue #3778BF ΔE 0.032
- Off Blue #5684AE ΔE 0.044
- Dusty Blue #5A86AD ΔE 0.050
- Dark Sky Blue #448EE4 ΔE 0.050
- Blue NCS #118AB2 ΔE 0.051
Use #4282C7 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.